Question

13. (d) 14. (d) 15. (c) 16. (a) 17. (c)
B. FILL IN THIE BLANKS :
1. Choanocytes are found in the members of the Phylum
2. Retrogressive metamorphosis in exhibited by
3. Polymorphism is very common is the phylum
4. The locomotory organ of annelidan animal is
5. The number of legs in insects is -
6. Vertebrates without jaw are called -
7. A canal system is a characteristic features of the phylum
8. The water vascular system is a characteristic feature of the​

Answer 1

Explanation:

1. Phylum porifera
2. Urochordata
3. cnidarians (coelentrata)
4. parapodia
5. 6 legs (3 pairs of jointed legs)
6. Agnatha
7. porifera
8. Echinodermata.

THANKS