Name the copulatory organs of Scoliodon?

How is the nervous tissue distributed in cnidarians?

Briefly explain circulatory system present in the cockroaches.

What does the mesoderm have to do with the designation of a true coelom? A)The mesoderm gives rise to the fluid found within the coelom. B)The mesoderm gives rise to the floor of the coelom only C)The mesoderm has nothing to do with the coelom. D)The mesoderm gives rise to the structure of the coelom wall. E)The mesoderm gives rise to the coelom because it develops within the mesoderm

Give the digrammatic representation showing Blood-corpuscles of Frog?

Draw the diagram of ventral view in earthworm?

Functions of the frog's body structures?

Using examples ofinvertebrate nervous systemshow can the process ofevolutionary cephalization bedescribed?

List the special features of the lamprey's spinal cord?

Give list of some animals that are found in parasatic?