During emergency, which of the following hormone is secreted ?

• Aldosterone

• Thyroxine

• Adrenalin

• Calcitonin

12.

Which of the following is a transparent tissue ?

• Tendon

• Fibrous cartilage

• Hyaline cartilage

• All of the above

Which of the following cell type is capable of giving rise to other cell types in sponges ?

• Thesocytes

• Pinacocytes

• Cnidocytes

• Archaeocytes

V^th cranial nerve of frog is called

• optic nerve

• vagus

• trigeminal

• opthalmic

The islets of Langerhans are found in

• pancreas

• stomach

• liver

• alimentary canal

The vitamin which is essential for blood clotting is

• vitamin-A

• vitamin-B

• vitamin-C

• vitamin-K

The female genital pore of Pheretima posthuma located upon the segment ?

• 14^th

• 16^th

• 18^th

• 15^th

Malpighian tubµles are

• excretory organs of insects

• excretory organs of frog

• respiratory organs of insects

• endocrine glands of insects

Pace-maker is

• AV node

• SA node

• Bundle of His

• Purkinje fibres

The characteristic larva of phylum Coelenterata is

• planula

• cysticercus

• rhabditiform

• wriggler