1. Look upto 20 phylums and their traits and Complete Table A to organize the information that you have learned. You will use this table to classify the organisms.

Question

Table A : Traits of Different Phyla

Traits

Phylum

Answer 1

1. Phylum Porifera (Sponges)
- Multicellular organisms
- Lack true tissues
- Filter feeders

2. Phylum Cnidaria (Jellyfish, corals)
- Radial symmetry
- Tentacles with cnidocytes
- Gastrovascular cavity

3. Phylum Platyhelminthes (Flatworms)
- Bilateral symmetry
- Soft and flattened bodies
- Some are parasitic

4. Phylum Nemertea (Ribbon worms)
- Proboscis for feeding
- Complete digestive system
- Some are predatory

5. Phylum Annelida (Segmented worms)
- Segmented bodies
- Coelomate bodies
- Closed circulatory system

6. Phylum Mollusca (Mollusks)
- Soft bodies with a muscular foot
- Shell for protection
- Radula for feeding

7. Phylum Arthropoda (Arthropods)
- Exoskeleton made of chitin
- Segmented bodies with jointed appendages
- Most diverse phylum

8. Phylum Echinodermata (Echinoderms)
- Spiny skin
- Water vascular system
- Radial symmetry as adults

9. Phylum Chordata (Chordates)
- Notochord present at some stage in life cycle
- Hollow nerve cord
- Post- tail

10. Phylum Nematoda (Roundworms)
- Unsegmented bodies
- Pseudocoelomate bodies
- Commonly found in soil

11. Phylum Tardigrada (Water bears)
- Extremophiles
- Can survive extreme conditions
- Slow metabolism

12. Phylum Rotifera (Rotifers)
- Ciliated corona for feeding
- Some are sessile, some are free-swimming
- Reproduce by parthenogenesis

13. Phylum Bryozoa (Moss animals)
- Colonial animals
- Filter feeders with lophophore
- Encased in a box-like structure

14. Phylum Brachiopoda (Lamp shells)
- Two shells enclosing the body
- Lophophore for filter feeding
- Common in ancient seas

15. Phylum Ectoprocta (Bryozoans)
- Colonial animals with zooids
- Lophophore for feeding
- Encased in a calcareous exoskeleton

16. Phylum Nematomorpha (Horsehair worms)
- Parasitic in insects
- Adults are free-living
- Larvae develop inside host

17. Phylum Chaetognatha (Arrow worms)
- Predatory marine organisms
- Transparent bodies
- Arrow-shaped body with grasping spines

18. Phylum Entoprocta (Goblet worms)
- Colonial filter feeders
- Encased in a calcareous cup
- Common in marine environments

19. Phylum Onychophora (Velvet worms)
- Soft bodies with numerous legs
- Predatory with slime glands
- Common in humid environments

20. Phylum Cycliophora (Symbion)
- Symbiotic relationship with lobsters
- Feed on food particles from lobster host
- Unique reproductive cycle

Table A: Traits of Different Phyla

| Phylum | Traits |
|-------------------|---------------------------------------|
| Porifera | Multicellular, lack true tissues, filter feeders |
| Cnidaria | Radial symmetry, cnidocytes, gastrovascular cavity |
| Platyhelminthes | Bilateral symmetry, soft bodies, some are parasitic |
| Nemertea | Proboscis, complete digestive system, some are predatory |
| Annelida | Segmented bodies, coelomate bodies, closed circulatory system |
| Mollusca | Soft bodies with muscular foot, shell, radula |
| Arthropoda | Exoskeleton, jointed appendages, segmented bodies |
| Echinodermata | Spiny skin, water vascular system, radial symmetry |
| Chordata | Notochord, hollow nerve cord, post- tail |
| Nematoda | Unsegmented bodies, pseudocoelomate, commonly found in soil |
| Tardigrada | Extremophiles, survive extreme conditions, slow metabolism |
| Rotifera | Ciliated corona, parthenogenesis, sessile or free-swimming |
| Bryozoa | Colonial animals, filter feeders, encased in box-like structure |
| Brachiopoda | Two shells, filter feeders, common in ancient seas |
| Ectoprocta | Colonial with zooids, lophophore, encased in exoskeleton |
| Nematomorpha | Parasitic in insects, free-living adults, larvae inside host |
| Chaetognatha | Marine predators, arrow-shaped body, grasping spines |
| Entoprocta | Filter feeders, colonial, encased in calcareous cup |
| Onychophora | Soft bodies, numerous legs, predatory with slime glands |
| Cycliophora | Symbiotic with lobsters, feed on food particles, unique reproductive cycle |