The following histology section depicts the structure of:
Given below is the diagram of female reproductive system of a frog marked with A, B, C, D, E and F.
Ovary is represented by:
1. A
2. B
3. C
4. D
The '?' in the given figure shows:
1. | Tight junctions | 2. | Adhering junctions |
3. | Gap junctions | 4. | Desmosomes |
In cockroach:
I. | The entire midgut is lined by cuticle. |
II. | Malpighian tubule is lined by glandular and ciliated cells. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I. | Blood transports respiratory gases |
II. | Anal styles are absent in females |
III. | There are 10 [5 pairs] of spiracles |
IV. | Vision with the help of ommatidia is mosaic vision |
V. | Development is paurometabolous |
Which of the following statement is incorrect regarding a frog?
1. Digestive system without salivary gland
2. Respiratory system without intercostal muscles
3. Circulatory system without SA node.
4. Reproductive system without copulatory organs.
Assertion (A): | Neuroglial cells comprise more than one-half the volume of nervous tissue in human body. |
Reason (R): | They help in propagation of nerve impulses and form a part of the synapse. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
I: | Hepatic portal system |
II: | Renal portal system |
Sinus venosus in the heart of a frog:
I: | joins the left atrium |
II: | pumps blood into the major arteries |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: | are nucleated |
II: | contain haemoglobin |