| 1. | They are located in the inner walls of hollow visceral organs of the body like the alimentary canal, reproductive tract, etc. |
| 2. | They do not exhibit any striation and are smooth in appearance, hence, they are called smooth muscles (nonstriated muscle). |
| 3. | Their activities are under the voluntary control of the nervous system and are therefore, known as voluntary muscles. |
| 4. | They assist in the transportation of food through the digestive tract and gametes through the genital tract. |
| I: | Gizzard helps in grinding the food particles. |
| II: | A ring of 6-8 blind tubules called hepatic or gastric caeca is present at the junction of foregut and midgut, which secretes digestive juice. |
| I: | is closed type. |
| II: | is involved in the exchange of gases with tissues. |
| Assertion (A): | The development of Periplaneta americana is holometabolous. |
| Reason (R): | The development in Periplaneta americana is ‘complete’ and not ‘partial’. |
| 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 |
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 |
| I: | Skeletal muscle is striated and voluntary. |
| II: | Smooth muscle is striated and involuntary. |
| III: | Cardiac muscle is non-straited and involuntary. |
| I: | protect and support neurons. |
| II: | make up more than one-half the volume of neural tissue in our body. |
| 1. | Tendon | 2. | Ligament |
| 3. | Skin | 4. | Bone |