A marine cartilaginous fish that can produce electric current is :-

Which of the following is an egg-laying mammal?

In a honey bee colony, worker bees are?

House lizard belongs to which class?

Pearl is formed by the secretion of?

Flame cells are excretory in function in the animals of which phylum?

The zoological name of the common housefly is:

Which of the following options does correctly represent the characteristic features of phylum Annelida?

Match the following columns and select the correct option :

Match List I with List II :

Choose the correct answer from the options given below:

Consider the following statements :
A. Annelids are true coelomates
B. Poriferans are pseudocoelomates
C. Aschelminthes are acoelomates
D. Platyhelminthes are pseudocoelomates
Choose the correct answer from the options given below: