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.

Choose the incorrect match

1. Smooth muscle-intercalated disc

2. Fibroblast-secretes fibers

3. Dense irregular connective tissue-skin

4. Loose connective tissue- store fat

Bidder’s canals is/are present in

1. Male frog

2. Both male and female frog

3. Female cockroach

4. Bone of mammals

Match the following and choose the correct option.

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

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

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

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

Among the options given below, simple epithelium is not found at which location?

1. Air sacs of lungs

2. PCT

3. Inner surface of bronchioles and fallopian tubes

4. Inner lining of ducts of salivary glands

See the figures given below and select the mismatch with respect to identification or corresponding feature listed.

Skeletal muscle fibres are

1. Branched, spindle-shaped and uninucleated

2. Striped, multinucleated and unbranched

3. Unbranched, involuntary and cylindrical in shape

4. Voluntary, unbranched and uninucleated

Select the odd one with respect to secretions of exocrine glands.

1. Saliva

2. Mucus

3. Insulin

4. Milk

A specialised connective tissue containing chondrocytes can be found at/in

(1) Myocardium

(2) Blood vessels

(3) Tip of nose

(4) Tendons

Internal fertilization is not seen in

1. Birds

2. Reptiles

3. Frog

4. Mammals