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

Bidder’s canals is/are present in

1. Male frog

2. Both male and female frog

3. Female cockroach

4. Bone of mammals

The most abundant type of loose connective tissue is

1. Areolar tissue

2. Cartilage

3. Tendon

4. Bone

Match the column I and column II with respect to types of epithelial tissue and their function.

            Column-I                                      Column-II

a. Glandular epithelium                      (i) Secretes hormones and milk

b. Squamous                                   (ii) Forms a diffusion epithelium boundary

c. Columnar epithelium                      (iii) Helps in secretion and absorption

d. Ciliated epithelium                         (iv) Responsible for movement of ova and mucus

Choose the correct option.

1. a(i), b(ii), c(iii), d(iv)

2. a(ii), b(iii), c(iv), d(i)

3. a(iii), b(iv), c(i), d(ii)

4. a(iv), b(i), c(ii), d(iii)

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.

Internal fertilization is not seen in

1. Birds

2. Reptiles

3. Frog

4. Mammals

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

Goblet cells of alimentary canal are modified from:

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