Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | In nearly all animal tissues specialized junction provide both structural and functional links between its individual cells. |
| Reason (R): | Cell junctions always help to stop substances from leaking across a tissue |
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 1. | Bone – ostocytes embedded in hydroxyapatite in osteon |
| 2. | loose connective tissue – collagenous, elastic, reticular fibers |
| 3. | adipose tissue – loose connective tissue with fat storing cells. |
| 4. | Fibrous connective tissue – chondrichthyes embedded in chondroitin sulfate. |
| List I | List II | ||
| (a) | Crop | (i) | grinding the food particles |
| (b) | Proventriculus | (ii) | secretion of digestive juice |
| (c) | Hepatic caecae | (iii) | removal of nitrogenous waste |
| (d) | Malpighian tubules | (iv) | storage of food |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (ii) | (iii) |
| 2. | (iii) | (ii) | (i) | (iv) |
| 3. | (ii) | (iv) | (i) | (iii) |
| 4. | (i) | (iv) | (iii) | (ii) |
| 1. | Skeletal muscle fibres are uninucleated and found in parallel bundles. |
| 2. | Intercalated discs allow the cardiac muscle cells to contract as a unit. |
| 3. | The walls of blood vessels are made up of columnar epithelium. |
| 4. | Smooth muscles are multinucleated and involuntary |
| (a) | Bones support and protect softer tissues and organs |
| (b) | Weight bearing function is served by limb bones |
| (c) | Ligament is the site of production of blood cells |
| (d) | Adipose tissue is specialised to store fats |
| (e) | Tendons attach one bone to another |
| 1. | (a), (b) and (d) only | 2. | (b), (c) and (e) only |
| 3. | (a), (c) and (d) only | 4. | (a), (b) and (e) only |
Ear wax secreting cells have which type of epithelium?
1. Columnar epithelium
2. Exocrine glandular epithelium
3. Compound epithelium
4. Endocrine glandular epithelium