The skull of frog is:

1. Acondylic

2. Monocondylic

3. Dicondylic

4. Polycondylic

Which of the following is not seen in the brain of the frog?

(1) Olfactory lobes

(2) Corpus callosum

(3) Corpora striata

(4) Anterior choroid plexus

Tadpoles will undergo metamorphosis if they are:

(1) fed on frog eggs

(2) provided with high temperature

(3) injected thyroxine

(4) injected gonadotropic hormones

The pituitary gland is crushed and injected in a frog. The frog will:

(1) start laying eggs almost immediately

(2) change color

(3) undergo metamorphosis

(4) die

Cuboidal epithelium with brush border of microvilli is found in :

1. Ducts of salivary glands

2. Proximal convoluted tubule of nephron 

3. Eustachian tube

4. Lining of intestine

Goblet cells of alimentary canal are modified from:

If the head of the cockroach is removed, it may live for a few days because:

Buccopharyngeal respiration in frog

1. is increased when nostrils are closed

2. Stops when there is pulmonary respiration

3. is increased when it is catching fly

4. stops when mouth is opened.

Frog's heart when taken out of the body continues to beat for sometime. Select the
best option from the following statements.
(i) Frog is a poikilotherm.
(ii) Frog does not have any coronary circulation.
(iii) Heart is "myogenic" in nature.
(iv) Heart is autoexcitable Options:

1. Only(iv)

2. (i) and (ii)

3. (iii)and(iv)

4. Only (iii)

The biological adaptation that allows frogs to obtain water for their survival during conditions of water scarcity is the