Page 3 - 3.Home assignment-I (Obj&Subj)-Animalia 1

a. i, ii and iii
b. i and iv
c. ii and iii
d. i and ii.

Subjective

1. How do poriferan animals differ from coelenterate animals? 1 E
2. Give examples of two acoelomate and pseudocoelomate animals. 1 E
3. Why are Platyhelminthes called as flatworms? 1 Av
4. Classify the following organisms based on the absence/presence of 3 Av
true coelom (i.e., acoelomate, pseudocoelomate and coelomate)

Spongilla, Sea anemone, Planaria, Liver fluke, Wuchereria, Ascaris.

5. Fill in the blanks with suitable terms. 3 D
a. Bilateral, dorsiventral symmetry is found in———.

b. Worms causing disease elephantiasis is———.

c. ———are known to have pseudocoelom.

6. a. Draw a neat diagram of Hydra. 3 D
b. Label mesoglea and gastrovascular cavity.
c. Name one species of this group that lives in colonies.