Out of the following endrocine glands which are unparied ?
(1) Ovary (2) Testes (3) Pancreas (4) Adrenal

Which one of the following does not contain any enzyme?

(1) Bile 
(2) Gastric juice 
(3) Saliva 
(4) Pancreatic juice

Which cell organelle is known as suicidal bag
(1) Ribosome (2) Centrosome (3) Lysosome (4) Peroxysome

Iodine is necessary for the synthesis of which hormone ?
(1) Auxin (2) Thyroxin (3) Adrenaline (4) Insulin

Which one is the most poisonous excretory substance

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