Identify A, B, C and D marked in the following chart.

1.	A	Teredo	bores in the wooden ships
2.	Cnidarian	B	Alternation of generation, polyp and medusa phase
3.	Ctenophoran	Cestum	C
4.	D	Lepisma	Silverfish present in old books, cardboards

Choose the correct option.

	A	B	C	D
1.	Porifera	Obelia	Bioluminescence	Crustacean
2.	Aschelminthes	Obelia	Emit light	Mollusca
3.	Mollusca	Aurelia	Emit light	Insecta
4.	Mollusca	Obelia	Emit light	Insecta

• A

  1

• B

  2

• C

  3

• D

  4