Anger is caused by increased levels ofthe following hormone.

(1) Somatotropin
(2) Thyroxine
(3) Testosterone
(4) Adrenaline

Which one is the most poisonous excretory substance

(1) Uric Acid
(2) Urea
(3) Ammonia
(4) Hippuric Acid

At the end of the experiment to prove that light is necessary for photosynthesis, when the leaf was tested with iodine, the ' S' shaped figure on the leaf was found to be.

(1) green-presence of starch (2) blue-black presence of starch
(3) green-absence of starch (4) blue-black absence of starch

Kidneys in human beings are a part of t he system of
(1) Nutrition (2) Respiration (3) Excretion (4) Transportation

The Pancreas secretes pancreatic juice which contains_______ enzyme for digesting proteins.

(1) Lipase
(2) Amylase
(3) Zymase
(4) Trypsin