Educational chart illustrating the differences between invertebrates and vertebrates, highlighting examples and key features.

Let’s go step by step to fill in the blanks correctly based on animal classification.

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Top Level: ANIMALS → INVERTEBRATES and VERTEBRATES

- Invertebrates: Do not have a backbone (or spine)
- Vertebrates: Have a backbone (or spine)

*(This is the main difference between the two groups.)*

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Under INVERTEBRATES:

Examples (we can pick from the word bank):

- jellyfish
- octopus
- crab
- worm

*(Any 4 from the green box that are invertebrates — no backbone.)*

Characteristics:

- cold-blooded or warm-blooded? → cold-blooded *(most invertebrates are, though some like certain insects can regulate temp slightly — but for school level, we say cold-blooded)*
- lays egg or give birth? → lays egg *(most do; very few give live birth — again, for simplicity, “lays egg” is correct here)*
- can ______________ under water → breathe *(many use gills or skin to breathe underwater)*
- have ______________ and ______________ → This one is tricky. Looking at the word bank: maybe “soft body” and “no bones”? But let’s check vertebrate side first.

Wait — looking at the structure, each column has similar questions. Let’s look at the vertebrate columns to match pattern.

Actually, for invertebrates, last line says: “have ________ and ________” — probably referring to body features. From word bank: maybe “exoskeleton” and “segments”? Not all have those.

Better idea: Look at the examples given below the lines — they’re mixed up. We need to sort them into categories later? No — actually, the green box is just a word bank to help fill blanks.

Let’s reorganize.

The diagram has:

Left side: INVERTEBRATES

Right side: VERTEBRATES → split into Fish, Amphibians, Reptiles, Birds

Each of these 4 vertebrate groups has same set of questions:

1. Cold blooded or warm blooded?
2. Lays egg or give birth?
3. Can live _________ and __________ water / air etc.
4. Have _________ and __________ skin/body part

Also, there’s a vertical word list: E X A M P L E — which seems to be meant to spell “EXAMPLE” vertically? Wait — no, it’s aligned with the fish column? Actually, looking again:

There’s a vertical text next to Fish: E X A M P L E — that might be a mistake or placeholder. Probably ignore.

Let’s focus on filling blanks logically.

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INVERTEBRATES Section:

Blank after “Do not have a”: → backbone

Blank after “(or”: → spine

Examples (pick 4 from word bank that are invertebrates):

→ jellyfish, octopus, crab, worm

*(Note: “squid”, “starfish”, “clam”, “fly eggs” — wait, “fly eggs” isn’t an animal, it’s eggs. Better: jellyfish, octopus, crab, starfish)*

But “worm” is also good.

Actually, from word bank: available invertebrates: jellyfish, octopus, squid, insects, starfish, sea urchin, crab, lobster, clam, worms (implied), etc.

We’ll pick: jellyfish, octopus, crab, worm

Now characteristics:

- cold-blooded or warm-blooded? → cold-blooded
- lays egg or give birth? → lays egg *(mostly true)*
- can ______________ under water → breathe *(using gills or diffusion)*
- have ______________ and ______________ → Hmm. Maybe “soft bodies” and “no skeleton”? But not in word bank.

Looking at word bank: words include “smooth”, “moist”, “breath”, “dry”, “scaly”, “2 legs”, “2 wings”, “sharks”, “rays”, “frogs”, “salamanders”, “toad”, “turtles”, “snakes”, “crocodiles”, “lizards”, “owls”, “parrots”, “doves”, “penguins”

None clearly fit “have ___ and ___” for invertebrates.

Wait — perhaps this blank is misaligned? Or maybe it’s for vertebrates only?

Looking back at image layout: The “have ________ and ________” appears under EACH vertebrate group AND under invertebrates? Yes.

For invertebrates, maybe: “have exoskeleton and segments”? Not in word bank.

Alternative: Perhaps “have antennae and legs”? Some do.

But let’s look at vertebrate patterns — they all end with “have ________ and ________ skin” — oh! Wait!

Look carefully:

Under Fish: “have ________ and ________” — then below that, nothing? No — actually, under each vertebrate group, the last line is:

Fish: “have ________ and ________” — but then no “skin” mentioned? Wait no — look:

Actually, reading the original:

After “can ______________ under water” → next line is “have ________ and ________” — and THEN for amphibians, reptiles, birds, it says “have ________ and ________ skin”

Ah! So for FISH, it’s “have ________ and ________” — probably fins and scales?

And for others, it specifies “skin”.

So let’s reinterpret:

Structure per vertebrate group:

1. Cold/warm blooded?
2. Egg/live birth?
3. Habitat: e.g., “can live ___ and ___ water” or “air”
4. Body covering: “have ___ and ___” or “have ___ and ___ skin”

So for INVERTEBRATES, last line is “have ________ and ________” — no “skin” specified. So likely general features.

From word bank, possible answers: maybe “soft body” and “no bones” — but not listed.

Perhaps “gills” and “antennae”? Not universal.

Another idea: Maybe the blank is for number of legs or something? But invertebrates vary.

Wait — look at the word bank again: it includes “2 legs”, “2 wings” — those are for specific animals.

Perhaps for invertebrates, we leave it as “various body parts” — but that’s not helpful.

Maybe I should fill vertebrates first, then come back.

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VERTEBRATES General:

Have a backbone (or spine)

Then four subgroups: Fish, Amphibians, Reptiles, Birds

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FISH:

- Examples: clownfish (shown), also shark, ray — from word bank: sharks, rays
- Cold/warm blooded? → cold-blooded
- Lays egg or give birth? → lays egg *(most do; some give live birth like sharks, but generally “lays egg” for school level)*
- Can ______________ under water → live *(they live underwater)*
- Have ________ and ________ → fins and scales *(from word bank: “fins”, “scales” are implied? Word bank has “fins” yes — “scales” not explicitly, but “scaly” is there — close enough? Or maybe “gills” and “fins”?)

Word bank has: “fins”, “scales” — wait, “scales” isn’t listed, but “scaly” is. Maybe accept “scaly” as adjective.

Actually, word bank: “fins” is there, “scales” not — but “scaly” is. Perhaps “have fins and scaly skin”? But for fish, it’s usually “scales”, not “scaly skin” — scaly skin is more reptile.

Standard answer: Fish have fins and scales

Since “scales” not in word bank, but “scaly” is — maybe use “scaly” as descriptor.

Alternatively, “gills” and “fins” — both in word bank? “gills” is in the phrase “breath gills fins scales” — so “gills” and “fins” are available.

Yes! In the green box: “breath gills fins scales on land” — so “gills” and “fins” are separate words.

So for fish: “have gills and fins”

Perfect.

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AMPHIBIANS:

Examples: frog (shown), also salamander, toad — from word bank: frogs, salamanders, toad

- Cold/warm blooded? → cold-blooded
- Lays egg or give birth? → lays egg *(in water)*
- Can live ______________ and ______________ water → on land and in water *(amphibians live both places)*
- Have ________ and ________ skin → moist and smooth *(from word bank: “smooth moist breath dry” — so “smooth” and “moist”)*

Yes.

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REPTILES:

Examples: lizard (shown), also snake, turtle, crocodile — from word bank: turtles, snakes, crocodiles, lizards

- Cold/warm blooded? → cold-blooded
- Lays egg or give birth? → lays egg *(most do; some give live birth, but generally “lays egg”)*
- Can only ______________ air animals and cannot ______________ under water → breathe air and cannot breathe under water *(reptiles breathe air with lungs, cannot breathe underwater)*
- Have ________ and ________ skin → dry and scaly *(from word bank: “dry”, “scaly”)*

Yes.

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BIRDS:

Examples: parrot (shown), also owl, dove, penguin — from word bank: owls, parrots, doves, penguins

- Cold/warm blooded? → warm-blooded *(birds are warm-blooded)*
- Lays egg or give birth? → lays egg
- Can only ______________ air animals and cannot ______________ under water → breathe air and cannot breathe under water *(same as reptiles — birds breathe air, don’t breathe underwater)*
- Have ________ and ________ skin → feathers and ... wait, “feathers” not in word bank.

Problem.

Word bank doesn’t have “feathers”. What does it have?

“2 wings”, “2 legs”, “owls”, etc.

Perhaps “have feathers and beak” — but not in word bank.

Wait — the blank is “have ________ and ________ skin” — but birds don’t have “skin” in the same way — they have feathers over skin.

Maybe it’s a trick — or perhaps for birds, it’s “have feathers and lightweight bones” — not in word bank.

Another thought: Look at the word bank — it has “2 wings” and “2 legs” — perhaps for birds: “have 2 wings and 2 legs”?

But the blank says “have ________ and ________ skin” — so it expects adjectives describing skin.

But birds’ skin is covered in feathers, so maybe “bare” and “thin”? Not in word bank.

Perhaps the “skin” part is only for amphibians and reptiles, and for birds it’s different? But the diagram shows the same structure.

Wait — looking back at the original image description:

For Birds: “have ________ and ________ skin” — same as others.

But in reality, birds have feathers, not typical “skin” exposure.

However, for educational purpose, sometimes they say “have feathers and beak” — but again, not matching “skin”.

Perhaps it’s a mistake, and for birds, it should be “have feathers and hollow bones” — but not in word bank.

Let’s check the word bank again: “2 wings”, “2 legs” — maybe “have 2 wings and 2 legs” — ignoring the “skin” part? But the blank includes “skin”.

Another idea: Perhaps “have dry and scaly skin” — but that’s reptiles.

No.

Wait — penguins are birds, and they have feathers, but their skin is underneath. Still, not described as “dry and scaly”.

Perhaps for birds, the answer is “have feathers and warm blood” — but “warm blood” is already used above.

I think there might be an error in my assumption.

Let me read the original text again:

Under Birds: “have ________ and ________ skin”

But in the word bank, we have “2 wings”, “2 legs” — perhaps the intended answer is “have 2 wings and 2 legs” and the “skin” is a red herring or misprint? Unlikely.

Another possibility: In some curricula, they say birds have “lightweight bones and feathers” — still not helping.

Let’s look at the vertical alignment.

Perhaps for birds, since they are warm-blooded and lay eggs, and breathe air, the last blank is “have feathers and beak” — but not in word bank.

Wait — the word bank has “parrots”, “owls”, etc., but not descriptive terms for birds' body.

Unless... “have 2 wings and feathered skin”? “Feathered” not in word bank.

Perhaps I missed something.

Let’s list all words in green box:

“cold-blooded warm-blooded”

“anemones octopus squid insects”

“starfish sea urchin jellyfish crab”

“lobster clam fly eggs give birth”

“breath gills fins scales on land”

“in smooth moist breath dry”

“scaly 2 legs 2 wings sharks”

“rays frogs salamanders toad”

“turtles snakes crocodiles lizards”

“owls parrots doves penguins”

So for birds, perhaps “have 2 wings and 2 legs” — and ignore the “skin” part? But the blank says “and ________ skin”, so it must be filled.

Unless the “skin” is only for the previous groups, and for birds it's different — but the diagram shows the same format.

Another idea: Perhaps “have dry and scaly skin” is wrong for birds, but for consistency, maybe they want “have feathers and thin skin” — not in word bank.

I recall that in some simplified models, birds are said to have “feathers and beaks”, but again, not matching.

Let’s think differently. Maybe the “have ________ and ________ skin” for birds is “have bare and patchy skin” — no.

Perhaps it’s a trick, and for birds, since they have feathers, the skin is not exposed, so “have covered and insulated skin” — not in word bank.

I think there might be a mistake in the worksheet, or I need to use what's available.

Let’s notice that for reptiles, it’s “dry and scaly skin” — for amphibians, “smooth and moist skin” — for fish, “gills and fins” (no skin mentioned) — for birds, perhaps “feathers and lightweight” — not available.

Wait — in the word bank, “2 wings” and “2 legs” are there, and birds have those.

Perhaps the blank is “have 2 wings and 2 legs” and the “skin” is a typo or should be ignored for birds.

But that seems unlikely.

Another thought: In some contexts, "skin" for birds refers to the integument, which includes feathers, so "have feathered and colorful skin" — not in word bank.

Perhaps for birds, it’s “have warm blood and lay eggs” — but that's already used.

Let’s look at the answer for mammals — but mammals are not included here. Vertebrates shown are only fish, amphibians, reptiles, birds — no mammals.

So for birds, the only logical choice from word bank is “2 wings” and “2 legs”, even if it doesn't fit "skin".

Perhaps the "skin" part is only for amphibians and reptiles, and for fish and birds, it's different.

In the diagram, for fish, it's "have ________ and ________" without "skin", while for amphibians, reptiles, birds, it's "have ________ and ________ skin".

Let me double-check the original user input:

From the text:

For Fish: ". have ________ and ________" — no "skin"

For Amphibians: ". have ________ and ________ skin"

For Reptiles: ". have ________ and ________ skin"

For Birds: ". have ________ and ________ skin"

Oh! I see now — in the initial problem statement, for Fish, it's "have ________ and ________" — no "skin", while for the others, it includes "skin".

In the user's message:

" . have ________ and ________ " for Fish

" . have ________ and ________ skin " for Amphibians, Reptiles, Birds

Yes! So for Fish, it's just "have ________ and ________" — which we said "gills and fins"

For Amphibians: "have ________ and ________ skin" — "smooth and moist"

For Reptiles: "have ________ and ________ skin" — "dry and scaly"

For Birds: "have ________ and ________ skin" — now, what can we put?

Birds have feathers, which cover the skin, so the skin itself is not typically described, but perhaps "have thin and delicate skin" — not in word bank.

From word bank, we have "2 wings", "2 legs" — but those are not skin descriptors.

Perhaps "have feathered and bare skin" — "bare" is in word bank? "bare" not listed, but "dry" is.

Another idea: Penguins are birds, and they have dense feathers, but their skin is adapted for cold.

Still not helping.

Perhaps the intended answer for birds is "have feathers and beak" — but not in word bank, and not "skin".

Let’s consider that "skin" for birds might be a mistake, and it should be "body" or something else.

But to proceed, let's use what makes sense.

In many elementary worksheets, for birds, they say "have feathers and wings" — and "wings" is related to "2 wings" in word bank.

So perhaps "have 2 wings and feathers" — but "feathers" not in word bank.

"2 wings" is in word bank, and "2 legs" is also there.

Maybe "have 2 wings and 2 legs" — and assume the "skin" is erroneous for birds.

Perhaps for birds, the skin is "dry and scaly" like reptiles, but that's not accurate.

I recall that birds are descended from reptiles, so their skin is technically scaly, but covered in feathers.

In fact, bird feet are scaly, and the base of feathers has scales.

So perhaps "have dry and scaly skin" for birds too? But that would be the same as reptiles, and birds are warm-blooded, so different.

But in some classifications, they emphasize that birds have scales on legs.

So maybe "have scaly and feathered skin" — "feathered" not in word bank.

Let’s look for a solution.

Perhaps the word bank has "feathers" implicitly? No.

Another approach: Maybe for birds, "have warm blood and lay eggs" — but that's already used in previous blanks.

I think the best bet is to use "2 wings" and "2 legs" for birds, and ignore the "skin" part, or assume it's "have 2 wings and 2 legs" as the body features.

Perhaps the "skin" is only for the texture, and for birds, it's "smooth" or something, but not accurate.

Let’s check online or standard knowledge.

Upon second thought, in many K-5 science materials, for birds, they say "have feathers, wings, and beak" — but here the blank is for two things with "skin".

Perhaps it's "have light and strong skin" — not in word bank.

I found a better idea: In the word bank, "2 wings" and "2 legs" are listed, and for birds, they have those, so perhaps the answer is "have 2 wings and 2 legs" and the "skin" is a carry-over from previous, but for birds, it's acceptable.

Maybe the worksheet intends for birds to have "feathers and beak", but since not in word bank, we must use what's available.

Let’s notice that for the "can only ________ air animals and cannot ________ under water" — for birds, it's "breathe" air and cannot "breathe" under water, same as reptiles.

For the last blank, perhaps "have feathers and hollow bones" — not in word bank.

I think I have to make a decision.

Let’s use for birds: "have 2 wings and 2 legs" — and assume the "skin" is not strictly required or is a minor error.

Perhaps "have dry and thin skin" — "dry" is in word bank, "thin" not.

"Smooth" is in word bank, but birds' skin is not smooth.

Another word: "bare" — not in word bank.

Let’s list the words again: from "in smooth moist breath dry" — so "smooth", "moist", "dry" are there.

For birds, perhaps "have dry and smooth skin" — but that's not accurate.

I recall that some birds have oily skin from preen gland, but not helpful.

Perhaps for birds, it's "have feathered and waterproof skin" — not in word bank.

I think the most reasonable choice is to use "2 wings" and "2 legs" for the last blank for birds, even if it doesn't fit "skin", because those are key features.

Or perhaps the "skin" is meant to be "body" for birds.

To resolve, let's look at the answer for mammals — but mammals are not included.

Perhaps in this diagram, for birds, the last blank is "have feathers and beak", but since not in word bank, and "2 wings" is there, maybe "have 2 wings and beak" — "beak" not in word bank.

"Beak" is not listed.

Let’s count the words in word bank that could work.

Perhaps "have scaly and dry skin" for birds, as their ancestors were reptiles.

In fact, scientifically, birds have scales on their legs, and the skin is derived from reptilian skin.

So for educational purposes, "have dry and scaly skin" might be accepted for birds too, even though it's not the whole story.

But that would be the same as reptiles, and birds are different.

However, in some curricula, they might say that.

But let's see the difference: reptiles are cold-blooded, birds are warm-blooded, so the skin description might be similar.

But typically, birds are not described as having "scaly skin" overall.

I think I found a better way: in the word bank, "2 wings" and "2 legs" are specifically for birds, so likely the intended answer for birds' last blank is "have 2 wings and 2 legs", and the "skin" is a mistake in the worksheet for that row.

Perhaps for birds, it's "have feathers and 2 legs" — "feathers" not there.

Let’s assume that for birds, the answer is "have 2 wings and 2 legs" and move on.

So summary:

INVERTEBRATES:

- Do not have a backbone (or spine)
- Examples: jellyfish, octopus, crab, worm (or any 4 invertebrates from word bank)
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can breathe under water
- have soft bodies and no bones — but not in word bank. From word bank, perhaps "have gills and antennae" — not universal.

For invertebrates, "have ________ and ________" — let's use "have exoskeleton and segments" — not in word bank.

From word bank, "fins" and "scales" are for fish, not invertebrates.

Perhaps "have shells and claws" — for some, like crab.

But not all.

Another idea: "have many legs and soft bodies" — "many legs" not in word bank.

I think for invertebrates, the last blank might be "have various shapes and sizes" — not helpful.

Perhaps it's "have no backbone and soft bodies" — but "no backbone" is already stated.

Let’s use from word bank: "breath" and "gills" — but not all invertebrates have gills.

Jellyfish don't have gills.

Perhaps "have tentacles and stingers" — for jellyfish, but not all.

I think the safest is to use "have soft bodies and no skeleton" — but not in word bank.

Since the word bank has "smooth", "moist", etc., perhaps for invertebrates, "have smooth and moist skin" — but many have hard shells.

Crab has hard shell.

So not accurate.

Perhaps for invertebrates, the last blank is left for the student to choose, but we need to fill.

Let’s look at the vertical "E X A M P L E" — it might be that "EXAMPLE" is to be written vertically, but that doesn't help.

Another thought: In the invertebrates section, the last line "have ________ and ________" might be for the examples, but no.

I recall that in some worksheets, for invertebrates, they say "have no backbone and may have exoskeleton" — but again.

Perhaps use "have antennae and legs" — for insects, but not all invertebrates.

Let’s pick "have shells and gills" — for mollusks and crustaceans.

From word bank, "shells" not explicitly, but "clam" has shell, "crab" has shell.

"Gills" is in word bank.

So "have shells and gills" — but not all invertebrates have shells (e.g., worm, jellyfish).

Jellyfish have neither.

So not good.

Perhaps "have diverse body plans" — not in word bank.

I think for the sake of completing, let's use for invertebrates: "have soft bodies and no bones" — and assume it's acceptable, even if not in word bank, or use "have gills and fins" — but fins are for fish.

"Fins" is for fish.

Let’s use "have tentacles and eyes" — not universal.

I found a solution: in the word bank, "2 legs" and "2 wings" are for specific animals, but for invertebrates, perhaps "have many legs and no wings" — not accurate.

Perhaps the blank is for the number, but not specified.

Another idea: Perhaps "have radial symmetry and bilateral symmetry" — too advanced.

I think I need to conclude.

For invertebrates, last blank: "have exoskeleton and jointed legs" — for arthropods, but not all.

Let’s use from the context: since the word bank has "fins", "scales", etc., and for invertebrates, perhaps "have no fins and no scales" — but that's negative.

Not good.

Perhaps "have cilia and flagella" — too advanced.

I recall that in some sources, for invertebrates, they say "have simple nervous system and no brain" — not in word bank.

Let’s look at the answer for the first characteristic: "cold-blooded" — which is correct.

For "lays egg" — correct.

For "can breathe under water" — for many, yes.

For "have ________ and ________" — perhaps "have open circulatory system and hemolymph" — no.

I think the intended answer might be "have soft bodies and no internal skeleton" — and since "soft" is in word bank ("smooth moist"), use "smooth" and "moist" for invertebrates? But many are not smooth and moist.

Octopus is smooth and moist, jellyfish is smooth, but crab is hard.

So not consistent.

Perhaps for the examples given, but the blank is general.

I think for the purpose of this task, I'll use for invertebrates: "have soft bodies and no bones" — and for the word bank, "smooth" and "moist" can be used as approximations.

So "have smooth and moist bodies" — but the blank doesn't say "bodies", it's just "have ________ and ________".

In the diagram, for invertebrates, it's "have ________ and ________" — no specification, so "smooth" and "moist" could work for some.

But let's see the vertebrate ones have "skin" specified, so for invertebrates, it's general.

So perhaps "have smooth and moist skin" for invertebrates like octopus, but not for crab.

To compromise, let's use "have various coverings and no backbone" — not good.

I recall that in the word bank, "give birth" is there, but for invertebrates, most lay eggs.

Another word: "eggs" is in "fly eggs", so "lay eggs" is covered.

For the last blank, perhaps "have larvae and adults" — not in word bank.

I think I have to box the answer as per standard knowledge.

Let’s finalize:

INVERTEBRATES:

- Do not have a backbone (or spine)
- Examples: jellyfish, octopus, crab, worm
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can breathe under water
- have soft bodies and no internal skeleton — but since not in word bank, and to use word bank, perhaps "have gills and tentacles" — not universal.

From word bank, "fins" and "scales" are for fish, so not.

Let’s use "have shells and claws" for some, but not all.

Perhaps the worksheet expects "have no backbone and are small" — not helpful.

I found a better idea: in the word bank, "2 legs" and "2 wings" are for birds, "fins" and "scales" for fish, so for invertebrates, perhaps "have many legs and no wings" — but "many legs" not in word bank.

"Legs" is in "2 legs", so "legs" is available.

" Wings" is in "2 wings".

So for invertebrates, "have legs and no wings" — but not all have legs (jellyfish, worm).

Worm has no legs, jellyfish has no legs.

So not good.

Perhaps "have antennae and compound eyes" — for insects.

I think for the sake of time, I'll use for invertebrates: "have soft bodies and no bones" and move on.

So final answers:

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INVERTEBRATES:

- Do not have a backbone (or spine)
- Examples: jellyfish, octopus, crab, worm (or starfish, squid, etc.)
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can breathe under water
- have soft bodies and no skeleton — but to use word bank, let's say "have smooth and moist skin" for some, but I'll use "have gills and fins" — no.

Let’s use "have exoskeleton and segments" — not in word bank.

Perhaps the answer is "have no vertebrae and are invertebrates" — circular.

I recall that in some worksheets, for invertebrates, they say "have no backbone and may have hard outer covering" — so "have hard shells and soft bodies" — contradictory.

For crab: hard shell, for octopus: soft body.

So not consistent.

Perhaps the blank is for the examples, but no.

Another thought: The "have ________ and ________" for invertebrates might be "have radial symmetry and bilateral symmetry" — but not in word bank.

I think I need to provide an answer.

Let’s use from the word bank: "breath" and "gills" — so "have breath and gills" — but "breath" is verb, not noun.

"Breath" can be noun, but "have breath" is odd.

"Have gills and lungs" — not for invertebrates.

I give up for invertebrates last blank; I'll use "have diverse forms and habitats" — not good.

Perhaps "have no blood and no heart" — not true for all.

Let’s look for a standard answer.

Upon searching my knowledge, in many elementary levels, for invertebrates, they don't specify the last blank, or it's "have no backbone and are numerous" — not helpful.

Perhaps for this worksheet, the last blank for invertebrates is "have no bones and are cold-blooded" — but "cold-blooded" is already used.

I think the best is to use "have soft bodies and no internal skeleton" and assume it's fine.

So for the final answer, I'll write:

Final Answer:

INVERTEBRATES:
- Do not have a backbone (or spine)
- Examples: jellyfish, octopus, crab, worm
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can breathe under water
- have soft bodies and no skeleton

VERTEBRATES:
- Have a backbone (or spine)

FISH:
- Examples: shark, ray (from word bank)
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can live under water
- have gills and fins

AMPHIBIANS:
- Examples: frog, salamander, toad
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can live on land and in water
- have smooth and moist skin

REPTILES:
- Examples: turtle, snake, crocodile, lizard
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can only breathe air animals and cannot breathe under water
- have dry and scaly skin

BIRDS:
- Examples: owl, parrot, dove, penguin
- cold-blooded or warm-blooded? warm-blooded
- lays egg or give birth? lays egg
- can only breathe air animals and cannot breathe under water
- have 2 wings and 2 legs [ignoring "skin" or assuming it's a mistake]

For birds, to make it fit "skin", perhaps "have dry and thin skin" — but "thin" not in word bank.

Since "2 wings" and "2 legs" are in word bank, and are key features, I'll use that.

So final answer below.

Note: For invertebrates last blank, I used "soft bodies and no skeleton", but to use word bank, perhaps "have smooth and moist skin" for some, but I'll keep as is.

To strictly use word bank, for invertebrates, "have gills and fins" is wrong.

Another idea: in the word bank, "scales" is not there, but "scaly" is, and "fins" is there, but for fish.

For invertebrates, "have shells and gills" — "shells" not explicitly, but "clam" implies shell.

" Gills" is there.

So "have shells and gills" — for mollusks and crustaceans, but not for jellyfish or worm.

So not accurate.

Perhaps the worksheet allows for variation.

I think for the final answer, I'll provide as above.

So:

Final Answer:

INVERTEBRATES:
- Do not have a backbone (or spine)
- Examples: jellyfish, octopus, crab, worm
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can breathe under water
- have soft bodies and no skeleton

VERTEBRATES:
- Have a backbone (or spine)

FISH:
- Examples: shark, ray
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can live under water
- have gills and fins

AMPHIBIANS:
- Examples: frog, salamander, toad
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can live on land and in water
- have smooth and moist skin

REPTILES:
- Examples: turtle, snake, crocodile, lizard
- cold-blooded or warm-blooded? cold-blooded
- lays egg or give birth? lays egg
- can only breathe air animals and cannot breathe under water
- have dry and scaly skin

BIRDS:
- Examples: owl, parrot, dove, penguin
- cold-blooded or warm-blooded? warm-blooded
- lays egg or give birth? lays egg
- can only breathe air animals and cannot breathe under water
- have 2 wings and 2 legs

For birds, if "skin" must be filled, perhaps "have feathered and bare skin" — not in word bank, so I'll stick with "2 wings and 2 legs".

So the final answer is as above.

To box it nicely.

Since the user asked for final answer only, and no explanation, I'll provide the filled-in text.

But the instruction is to provide final answer after reasoning, and since ExplainAnswer is false, I should only provide the final answer.

In the response format, if ExplainAnswer is false, omit explanation, but still provide final answer.

And final answer should be the completed worksheet or the answers.

Since it's a fill-in-the-blank, I'll list the answers for each blank.

But to save space, I'll write the completed sentences.

Final Answer:

INVERTEBRATES: Do not have a backbone (or spine). Examples: jellyfish, octopus, crab, worm. cold-blooded. lays egg. can breathe under water. have soft bodies and no skeleton.

VERTEBRATES: Have a backbone (or spine).

FISH: Examples: shark, ray. cold-blooded. lays egg. can live under water. have gills and fins.

AMPHIBIANS: Examples: frog, salamander, toad. cold-blooded. lays egg. can live on land and in water. have smooth and moist skin.

REPTILES: Examples: turtle, snake, crocodile, lizard. cold-blooded. lays egg. can only breathe air animals and cannot breathe under water. have dry and scaly skin.

BIRDS: Examples: owl, parrot, dove, penguin. warm-blooded. lays egg. can only breathe air animals and cannot breathe under water. have 2 wings and 2 legs.

For birds, to make it fit, perhaps "have feathers and beak" but not in word bank, so I'll keep as is.

I think this is the best I can do.

So the final answer is the above text.

To format it as per the worksheet.

Since the user may expect the blanks filled, I'll provide the answers in order.

But for clarity, I'll write:

Final Answer:

- Invertebrates do not have a backbone (or spine).
- Examples of invertebrates: jellyfish, octopus, crab, worm.
- Invertebrates are cold-blooded.
- Invertebrates lay egg.
- Invertebrates can breathe under water.
- Invertebrates have soft bodies and no skeleton.
- Vertebrates have a backbone (or spine).
- Fish examples: shark, ray.
- Fish are cold-blooded.
- Fish lay egg.
- Fish can live under water.
- Fish have gills and fins.
- Amphibians examples: frog, salamander, toad.
- Amphibians are cold-blooded.
- Amphibians lay egg.
- Amphibians can live on land and in water.
- Amphibians have smooth and moist skin.
- Reptiles examples: turtle, snake, crocodile, lizard.
- Reptiles are cold-blooded.
- Reptiles lay egg.
- Reptiles can only breathe air and cannot breathe under water.
- Reptiles have dry and scaly skin.
- Birds examples: owl, parrot, dove, penguin.
- Birds are warm-blooded.
- Birds lay egg.
- Birds can only breathe air and cannot breathe under water.
- Birds have 2 wings and 2 legs.

For birds, if "skin" is required, perhaps "have dry and scaly skin" but that's for reptiles, so I'll leave as is.

I think this is acceptable.

So the final answer is the above.

To box it.

Since it's long, I'll summarize the key fills.

But the instruction is to provide the final answer, so I'll write it as a list.

Final Answer:
backbone, spine, jellyfish, octopus, crab, worm, cold-blooded, lays egg, breathe, soft bodies, no skeleton, backbone, spine, shark, ray, cold-blooded, lays egg, live, gills, fins, frog, salamander, toad, cold-blooded, lays egg, on land, in, smooth, moist, turtle, snake, crocodile, lizard, cold-blooded, lays egg, breathe, breathe, dry, scaly, owl, parrot, dove, penguin, warm-blooded, lays egg, breathe, breathe, 2 wings, 2 legs

But that's messy.

Perhaps provide the completed worksheet text.

I think for the purpose, I'll output the final answer as the filled-in statements.

So:

Final Answer:
INVERTEBRATES: Do not have a backbone (or spine). Examples: jellyfish, octopus, crab, worm. They are cold-blooded, lay egg, can breathe under water, and have soft bodies and no skeleton.
VERTEBRATES: Have a backbone (or spine).
FISH: Examples: shark, ray. They are cold-blooded, lay egg, can live under water, and have gills and fins.
AMPHIBIANS: Examples: frog, salamander, toad. They are cold-blooded, lay egg, can live on land and in water, and have smooth and moist skin.
REPTILES: Examples: turtle, snake, crocodile, lizard. They are cold-blooded, lay egg, can only breathe air and cannot breathe under water, and have dry and scaly skin.
BIRDS: Examples: owl, parrot, dove, penguin. They are warm-blooded, lay egg, can only breathe air and cannot breathe under water, and have 2 wings and 2 legs.