A group of animals having marsupium

The group of animals having open circulatory system is

Which of the following groups of animals is having tube in tube body plan?

Which of the following groups of animals is having tube in tube body plan?

What is closed circulatory system? Name two groups of animals having this type of circulation.

What is the closed circulatory system? Name two groups of animals having this types of circulation.

Echinodermata is a group of animals which are

Which group of animals have estimated maximum species?

A group of plants or animals having similar traits and of any rank is a

Which group of animals have spiracles and tracheae for breathing and respiration ?

What is a pseudocoelom ? What are the advantages of having a coelom ? What two groups of animals have a pseudocoelom ?