Why mule is sterile in nature?

What are the four characteristics common to most animals?

Compare closed and open circulatory system.

Choose the term that does not belong in the following group and explain why it does not belong?
Notochord, cephalisation, dorsal nerve cord and radial symmetry.

Which of the chordate characteristics do tunicates retain as adults?

List the functions of air bladder in fishes.

Differentiate white adipose tissue from brown adipose tissue.

How do earthworms breathe?

Comment on the functions of alary muscles?

How does the male frog attract the female for mating?

Resistance in the airways is typically low. Why? Give two reasons.

Right ventricular wall is thinner than the left ventricular wall. Why?

Differentiate cortical from medullary nephrons

Which vessels drain filtered blood from the kidneys?

What is the effect of aldosterone on kidneys and where is it produced?

Which is the only jointless bone in human body?

Cornea transplant in humans is almost never rejected. State the reason.

Write the role of oestrogen in ovulation.

Write the functions of (CCK) Cholecystokinin.

What happens to the drones after mating flight?

Name any two trees on which lac insects grows.

Define cross breeding.

Mention the advantages of MOET.

Write the normal values of total RBC and WBC

What are the advantages of CT over other imaging techniques?