Which of these insects, secretes shellac ? 

Which are the Totipotent cells of sponges.

The invasion of part of body or other animals by eggs or larvae of files is called:

Which type of excretory canal system is present in Ascaris ?

Sponges are economically important because they are used as :

The matured proglottids having fertilized eggs in uterus of tapeworm are regularly detached. This process is known as what?

What is the blood pigment of earthworm?

Organ pipe coral is:

Sea stars are:

The coelomic fluid of the eatrhworm contains what?