Male and female frogs are distinguishable externally only during breeding season when:

1. the female develops nuptial pad in the thumb

2. the male develops nuptial pad in the thumb

3. the male develops nuptial pad in the thumb and the female develops a nuptial pad on other digits

4. the male develops large nuptial pad in the thumb while the female develops small nuptial pad in the thumb

Regarding skin of the frog, incorrect statement is:

1. It is made of the epidermis and the dermis

2. Mucous glands are present in the dermis and open at the surface

3. It is soft, moist and slimy

4. It is covered by scales

In frogs:

1. The dentition is homodont and the upper jaw is toothless.

2. The dentition is heterodont and the upper jaw is toothless.

3. The dentition is homodont and the lower jaw is toothless.

4. The dentition is heterodont and the lower jaw is toothless.

During aestivation and hibernation, frog respires by:

1. Lungs

2. Skin

3. Buccal mucosa

4. All of these

There are ___________ pairs of cranial nerves in frog.

1. 8

2. 10

3. 11

4. 12

Consider the following parts of the brain of frog:

I. Olfactory lobes
II. Optic lobes
III. Cerebral hemispheres
IV. Diencephalon

Forebrain includes:
1. I, II, III, IV
2. I, II, III
3. I, III, IV
4. II, III, IV

The hind brain of frog consists of:

1. Pons and Medulla

2. Cerebellum and Pons

3. Hypothalamus and Thalamus

4. Cerebellum and Medulla

The skull of frog is:

1. Acondylic

2. Monocondylic

3. Dicondylic

4. Polycondylic

In frog, a thin walled urinary bladder is present __________ to the rectum and opens in the __________

1. Ventral, cloaca

2. Dorsal, cloaca

3. Ventral, Urethra

4. Dorsal, urethra

Regarding reproductive system of a male frog:

I. Testes are adhered to the upper part of the kidneys by a double fold of peritoneum called mesorchium.

II. Vasa efferentia are 50 to 60 in number and enter kidneys on their side

III. Vasa efferentia open into the bidder's canal which finally communicates with urogenital duct.

1. I, II, III are correct

2. I and II are correct

3. I and lll are correct

4. II and III are correct