Educational worksheet for classifying animals and microbes.

Let’s go step by step to match each animal or microbe with its correct phylum.

We’ll look at each picture and think about what group it belongs to based on basic biology facts:

1. Jellyfish → Soft, bell-shaped, stinging tentacles → Phylum Cnidaria
2. Starfish (sea star) → Spiny skin, radial symmetry → Phylum Echinodermata
3. Amoeba → Single-celled, moves with pseudopods → Phylum Protozoa (or sometimes called Protista — but in many school curricula, “Protozoa” is used for this)
4. Horse → Has backbone, hair, gives birth to live young → Phylum Chordata
5. Sea urchin or sand dollar? Wait — the image looks like a starfish again? No — actually, looking carefully: second row, middle — it’s a brittle star or sea star variant? Actually, no — let’s recheck. The second row, middle is likely a crab or crustacean? Wait — no, the image shows a starfish-like creature with long arms — still Echinodermata. But wait — maybe it’s a sea cucumber? No — let’s use standard matching.

Actually, let’s list them clearly by position (left to right, top to bottom):

Row 1:
- Left: Jellyfish → Cnidaria
- Middle: Starfish → Echinodermata
- Right: Amoeba → Protozoa

Row 2:
- Left: Horse → Chordata
- Middle: Crab? Or lobster? It has hard shell and jointed legs → Arthropoda
- Right: Cat → Also has backbone → Chordata

Wait — that can’t be right — two chordates? Yes, both horse and cat are vertebrates → both Chordata. That’s fine.

Row 3:
- Left: Earthworm → Segmented body → Annelida
- Middle: Paramecium? Or another protozoan? Looks like a slipper-shaped single cell → Protozoa
- Right: Mouse → Mammal → Chordata

Row 4:
- Left: Tapeworm? Flat, segmented ribbon → Platyhelminthes (flatworms) OR if it’s a roundworm? Wait — tapeworm is flat → Platyhelminthes. But some schools classify parasitic worms differently. Let’s check: if it’s a tapeworm, then Platyhelminthes. If it’s a roundworm, then Nematoda. Looking at shape — it’s flat and segmented → Platyhelminthes
- Middle: Roundworm? Long, thin, unsegmented → Nematoda
- Right: Snail → Soft body, often with shell → Mollusca

Row 5:
- Left: Chicken → Bird → Chordata
- Middle: Fish → Has gills, fins → Chordata
- Right: Human figure? Or maybe a frog? Wait — it looks like a human standing → still Chordata

Wait — we have too many Chordata? That’s okay — many animals are in Chordata.

But let’s double-check common classifications taught in middle/high school:

Standard phyla covered:
- Porifera (sponges) — not here
- Cnidaria (jellyfish, coral)
- Platyhelminthes (flatworms)
- Nematoda (roundworms)
- Annelida (earthworms)
- Arthropoda (insects, crabs, spiders)
- Mollusca (snails, clams, octopus)
- Echinodermata (starfish, sea urchins)
- Chordata (vertebrates: fish, amphibians, reptiles, birds, mammals)
- Protozoa (single-celled organisms like amoeba, paramecium)

Now assign each:

1. Jellyfish → Cnidaria
2. Starfish → Echinodermata
3. Amoeba → Protozoa
4. Horse → Chordata
5. Crab → Arthropoda
6. Cat → Chordata
7. Earthworm → Annelida
8. Paramecium (slipper-shaped) → Protozoa
9. Mouse → Chordata
10. Tapeworm → Platyhelminthes
11. Roundworm → Nematoda
12. Snail → Mollusca
13. Chicken → Chordata
14. Fish → Chordata
15. Human → Chordata

Yes — multiple chordates are expected.

So final matches:

Top row:
- Jellyfish → Cnidaria
- Starfish → Echinodermata
- Amoeba → Protozoa

Second row:
- Horse → Chordata
- Crab → Arthropoda
- Cat → Chordata

Third row:
- Earthworm → Annelida
- Paramecium → Protozoa
- Mouse → Chordata

Fourth row:
- Tapeworm → Platyhelminthes
- Roundworm → Nematoda
- Snail → Mollusca

Fifth row:
- Chicken → Chordata
- Fish → Chordata
- Human → Chordata

All consistent with standard biological classification.

Final Answer:

Jellyfish – Cnidaria
Starfish – Echinodermata
Amoeba – Protozoa
Horse – Chordata
Crab – Arthropoda
Cat – Chordata
Earthworm – Annelida
Paramecium – Protozoa
Mouse – Chordata
Tapeworm – Platyhelminthes
Roundworm – Nematoda
Snail – Mollusca
Chicken – Chordata
Fish – Chordata
Human – Chordata