The air sacs in the lungs are comprised of
_____ cells.

1. simple squamous

2. simple columnar

3. simple cuboidal

4. transitional

An animal which contains three-chambered heart is ______________.

1. man

2. rabbit

3. fish

4. frog

Ventricle of frog contains:

(1) oxygenated blood

(2) deoxygenated blood

(3) no blood

(4) mixed blood

Assertion (A): Hibernation during winter and aestivation during summer is seen in frogs.

Reason (R): Frogs are poikilotherms.

(1) Both A and R are true and R is the correct explanation for A.

(2) Both A and R are true both R is not the correct explanation for A.

(3) A is true and R is false.

(4) A is false and R is true.

Blood is different from other connective tissue
because
(i) It is mesodermal in origin.
(ii) Blood cells do not form the composition of blood
plasma or matrix.
(iii) It contains different kind of cells performing
different function.
(iv) It lack fibres.

1. (i), (ii), (iii), (iv) 

2. (ii), (iv) only

3. (iv) only 

4. (ii) only

Areolar connective tissue contains
(i) Semi-fluid ground substance containing modified
polysaccharide.
(ii) Fibroblast cells.
(iii) Mast cells.
(iv) Macrophages.

1. (i), (ii), (iii), (iv) 

2. (ii), (iii), (iv) only

3. (i), (ii) only 

4. (i) only

Which of the following characteristics is not correct for squamous epithelium?

1. Made up of a single thin layer of flattened cells.
2. Cells with irregular boundaries.
3. Free surface contains microvilli.
4. Involved in a function like forming diffusion boundary.

Mark the incorrect statement regarding compound epithelium:

1. Made up of more than one layer of cells.

2. Vital role in secretion and absorption.

3. Provide protection against chemical and mechanical stress.

4. It covers the moist surface of the buccal cavity.

The excess of nutrients which are not used immediately are converted into fats and stored in 

1. Areolar tissue

2. Adipose tissue

3. Dense regular connective tissue

4. Dense irregular connective tissue

Cartilage is present

A. In the tip of nose and middle ear joints

B. Between adjacent bones of vertebral column

C. Between adjacent bones of limbs and hands in adults

1. A, B and C

2. A and B

3. B and C

4. A and C