| I: | 10 pairs of small holes called spiracles are present on the lateral side of the body. |
| II: | Excretion is performed by malpighian tubules. |
| III: | In the head region, the brain is represented by supra-oesophageal ganglion. |
| IV: | Each compound eye consists of about 20 rectangular ommatidia. |
What structures are used for excretion and osmoregulation in Periplaneta americana?
| 1. | Protonephridia | 2. | Nephridia |
| 3. | Malpighian tubules | 4. | Antennal glands |
| 1. | Cardiac muscle cells to each other |
| 2. | Smooth muscle cells to each other |
| 3. | Skeletal muscle cells to each other |
| 4. | Tendons of two muscle |
| 1. | Fallopian tubes are lined with brush-bordered epithelium. |
| 2. | Proximal convoluted tubule of the nephron is lined by ciliated epithelium. |
| 3. | Areolar tissue is a dense, regular connective tissue. |
| 4. | Skin has dense irregular connective tissue. |
| Statement I: | Stratified squamous epithelium lines the alveoli. |
| Statement II: | Simple columnar epithelium lines the proximal convoluted tubules of nephron. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is correct |
| I: | Skeletal muscle is striated and voluntary. |
| II: | Smooth muscle is striated and involuntary. |
| III: | Cardiac muscle is non-straited and involuntary. |
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 |