Arthropod Coloring Worksheet for educational use.

Let’s go through each question one by one, using the information given in the worksheet.

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1. What does arthropod mean?

The word “arthropod” comes from Greek:
- “arthro” = jointed
- “pod” = foot or leg

So, arthropod means “jointed foot” — because all arthropods have legs with joints (like knees or elbows).

✔ Final Answer for #1: Jointed foot

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2. Is a spider an insect? Explain your answer.

Insects are a type of arthropod, but not all arthropods are insects.

Insects have:
- 3 body parts (head, thorax, abdomen)
- 6 legs
- Usually wings and antennae

Spiders have:
- 2 body parts (cephalothorax + abdomen)
- 8 legs
- No wings or antennae

So, spiders are not insects — they’re arachnids!

✔ Final Answer for #2: No, a spider is not an insect because it has 8 legs and only 2 body parts, while insects have 6 legs and 3 body parts.

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3. Are they unisexuals or intersexuals? Why? (use text book)

This question seems to be asking about whether arthropods are male/female separate (unisexual) or both sexes in one organism (intersexual/hermaphrodite).

Most arthropods are unisexual — meaning individuals are either male or female. They reproduce sexually with two parents.

Some exceptions exist (like certain barnacles), but generally, arthropods are unisexual.

Since the worksheet says “use textbook,” we’ll go with the general rule.

✔ Final Answer for #3: They are mostly unisexuals because most arthropods have separate male and female individuals that reproduce sexually.

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4. List 4 characteristics of all arthropods:

From the intro paragraph and basic biology:

All arthropods share these traits:

a. Exoskeleton – hard outer shell made of chitin
b. Jointed appendages – legs, antennae, etc., with joints
c. Segmented body – body divided into sections
d. Bilateral symmetry – left and right sides mirror each other

(You could also say “open circulatory system” or “ventral nerve cord,” but the first four are most common and easiest.)

✔ Final Answer for #4:
a. Exoskeleton
b. Jointed appendages
c. Segmented body
d. Bilateral symmetry

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5. Name 3 main arthropod groups:

The three biggest groups of arthropods are:

1. Insects – like ants, bees, butterflies (6 legs, 3 body parts)
2. Arachnids – like spiders, scorpions, ticks (8 legs, 2 body parts)
3. Crustaceans – like crabs, lobsters, shrimp (mostly aquatic, often more than 8 legs)

(Some might include Myriapods — centipedes/millipedes — as a fourth group, but the question asks for 3 main ones.)

✔ Final Answer for #5:
1. Insects
2. Arachnids
3. Crustaceans

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Now let’s double-check everything before writing final answers.

✔️ Q1: “Arthropod” = jointed foot → correct
✔️ Q2: Spider ≠ insect → 8 legs vs 6, 2 body parts vs 3 → correct
✔️ Q3: Most arthropods are unisexual → yes, standard biology
✔️ Q4: 4 key features → exoskeleton, jointed limbs, segmented body, bilateral symmetry → all accurate
✔️ Q5: 3 main groups → insects, arachnids, crustaceans → widely accepted

Everything checks out!

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Final Answer:
1. Jointed foot
2. No, a spider is not an insect because it has 8 legs and only 2 body parts, while insects have 6 legs and 3 body parts.
3. They are mostly unisexuals because most arthropods have separate male and female individuals that reproduce sexually.
4. a. Exoskeleton
b. Jointed appendages
c. Segmented body
d. Bilateral symmetry
5. 1. Insects
2. Arachnids
3. Crustaceans