Question

make a flow chart of invertebrates in the kingdom animalia based upon their characteristics features

Answer 1

Invertebrate organisms in the kingdom animelia are further classified based on the extent and type of the body design differnetiation. They are -

1. Phylum Porifera-

• They are non motile animals that are attached to some solid parts.
• They have holes or spores all over the body.
• The body design involves very minimal differentiation and division into tissues.

Eg: Sycon, Spongilla

2. Phylum Coelenterata-

• They show more body design differentiation.

• The body is made of two layers of cells in which one makes up cells on the outside of the body and other makes the inner lining of the body.

Eg: Hydra, Sea anemone

3. Phylum Platyhelminthes-

• The body is bilaterally symmetrical.
• There is no true body cavity or coelom.
• They are either free living or parasitic.

Eg: Planaria, Liver fluke

4. Phylum Nematoda-

• The body is bilaterally symmetrical and triploblastic.
• A sort of body cavity or a pseudocoelom is present.
• They are parasitic.

Eg: Ascaris, Wuchereria.

5. Phylum Annelida-

• The body is bilaterally symmetrical  and triploblastic.
• They have a true body cavity.
• There is extensive organ differentiation.

Eg: Nereis, Earthworm.

6. Phylum Arthropoda-

• The body is bilaterally symmetrical and triploblastic.
• The coelomic cavity is blood filled.
• They have jointed legs.

Eg: Spider, Houseflies.

7. Phylum Mollusca-

• The body is bilaterally symmetrical.
• The coelomic cavity is reduced.
• There is little segmentation.
• There is a foot that is used for moving.

Eg: Pilia, Octopus.

8. Phylum Echinodermata-

• They are spiny skinned organisms.
• They are triploblastic  and have a coelomic cavity.
• They have a peculiar water driven tube system which are used for moving.

Eg: Asterias, Echinus.

Answer 2

ANSWER:

1. porifera
2. coelenterate
3. platyhelminthes
4. nematoda
5. annelids
6. arthropods
7. molluscs
8. echinodermata