Consider the given two statements:
Assertion (A): | Cardiac muscle cells can contract as a unit. |
Reason (R): | Cardiac muscle tissue is a contractile tissue present only in the heart. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
3. | (A) is True; (R) is False |
4. | Both (A) and (R) are False |
Assertion (A): | Compound epithelium has a limited role in secretion and absorption. |
Reason (R): | Compound epithelium is made of more than one layer (multi-layered) of cells. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
3. | (A) is True; (R) is False |
4. | Both (A) and (R) are False |
Assertion (A): | The gastro-intestinal tract of Rana tigrina is short in length. |
Reason (R): | Rana tigrina is a carnivore. |
1. | Both (A) and (R) are True and (R) correctly explains (A) |
2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
3. | (A) is True; (R) is False |
4. | Both (A) and (R) are False |
1. | contract involuntarily |
2. | have a striated appearance |
3. | are always uninucleate |
4. | are present in the walls of internal organs |
I: | PCT of nephron |
II: | Lining of small intestine |
I: | Respiratory passage |
II: | Oviducts |
1. | Only I | 2. | Only II |
3. | Both I and II | 4. | Neither I nor II |
1. | Male frogs have a copulatory pad on the first digit of the fore limbs which are absent in female frogs |
2. | Female frogs have a copulatory pad on the first digit of the fore limbs which are absent in male frogs |
3. | Male frogs have a copulatory pad on the first digit of the hind limbs which are absent in female frogs |
4. | Female frogs have a copulatory pad on the first digit of the hind limbs which are absent in male frogs |
1. | It is dry with scales. |
2. | The colour of ventral side of body is generally olive green with dark irregular spots. |
3. | On the dorsal side the skin is uniformly pale yellow. |
4. | The frog never drinks water but absorbs it through the skin. |