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

1.	presence of a modified tongue that acts like a sponge to suck water from damp soils.
2.	presence of water channels in the skin by which they absorb water from their surroundings.
3.	presence of ciliated esophagus that helps in separating water from ingested particulate matter.
4.	selective feeding on plants with a large amount of water that would fulfill the water requirement.

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)

Internal fertilization is not seen in

1. Birds

2. Reptiles

3. Frog

4. Mammals

Select the incorrect match with respect to animals and the type of nitrogenous waste excreted by them

      Animals                                Nitrogenous waste
1. Rana                                  -  Uricotelic

2. Pheretima                           -  Ureotelic

3. Periplaneta                         -  Uricotelic

4. Tadpole larva of frog           -  Ammonotelic

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)

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.

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

Goblet cells of alimentary canal are modified from: