Name the two parts of a plant through which its gaseous waste products are released into the air.

Name one animal having single circulation of blood and another having double circulation.

State whether the following statements are true or false :

(a) Some organisms store wastes in body parts.

(b) The value of systolic pressure is always lower than that of diastolic pressure.

What happens to the glucose which enters the nephron tubule along with the filtrate?

Name the two waste products of the human body which are produced in the body cells.