Question

A. Name the following :
(a) animals which spend their lives fixed to a substratum.
(b) formation of a cyst by secreting a hard resistant covering.
(c) animal that live in a sea water.
(d) a wide opening in sponges for passing out water.
(e) a true internal body cavity in which well developed organs can be accommodated. ​

Answer 1

Explanation:

a. ans algae .

b .ans ameoba .

c. ans dolphin .

d. ans osculum .

e. ans coleom .

Answer 2

Answer:

A. ans Algae

B. ans Amoeba

C. ans Dolphin

D. ans Osculum

E. ans Coleom