1 In porifera, the water is taken in through _____________ and given out through _____________
2 Animals attached to substratum are called _____________ animals.
3 In conclenterates _____________ are useful and on capturing the prey whereas _________ inject the tax in body of prey.
4 Body of annelid an animal is long cylindrical and ____________ segmented.
5 __________ second largest phylum in animal kingdom.
6 Endoskeleton of cyclostomata animals is __________
7 Body cavity between the body and internal organs is called __________

Q. A , B and C are three living organisms. The organism A is a unicellular fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of the malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body.

(a) What are organisms (i) A (ii) B, and (iii) C?

Q.

In phylum ______, the animals have a soft, unsegmented body, with a hard, calcareous shell to protect the soft body.

Q. Write relevant phylum/class for each of the following.

Q. X is a phylum with organisms having true segmentations throughout their body. They have a true body cavity (coelom) and are seen in a variety of habitats. Identify the phylum X.