Q. No.Nitrogenous wastes are absorbed and converted to uric acid in cockroach by:
1. Nephridia
2. Malpighian tubules
3. Fat body
4. Mushroom gland
1. Nephridia
2. Malpighian tubules
3. Fat body
4. Mushroom gland
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Identify the incorrectly matched pair regarding reproductive structures in Periplaneta americana:
|
|
Structure |
Body segment |
|
1. |
Testes |
4th – 6th abdominal |
|
2. |
Ovaries |
4th – 6th abdominal |
|
3. |
Mushroom gland |
6th – 7th abdominal |
|
4. |
Spermatheca |
6th abdominal |
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Match the following columns with reference to cockroach and select the correct option :
| Column I | Column II | ||
| (a) | Grinding of the food particles | (i) | Hepatic caeca |
| (b) | Secrete gastric juice | (ii) | 10th segment |
| (c) | 10 pairs | (iii) | Proventriculus |
| (d) | Anal cerci | (iv) | Spiracles |
| (v) | Alary muscles |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (iv) | (iii) | (v) | (ii) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (ii) | (iii) | (i) | (iv) |
If the head of cockroach is removed, it may live for few days because:
| 1. | The cockroach does not have a nervous system. |
| 2. | The head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body. |
| 3. | The head holds a third of the nervous system while the rest is situated along the dorsal part of its body. |
| 4. | The supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen. |
Which of the following statements is incorrect?
1. Cockroaches exhibit mosaic vision with less sensitivity and more resolution
2. A mushroom-shaped gland is present in the 6th-7th abdominal segments of male
3. A pair of spermatheca is present in the 6th segment of female cockroach
4. Female cockroach possesses sixteen ovarioles in the ovaries
1. Epidermis
2. Epithelium
3. Connective
4. Neural
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1. Simple squamous
2. Simple cuboidal
3. Simple columnar
4. Ciliated columnar
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| 1. | dry surface of the skin |
| 2. | moist surface of buccal cavity |
| 3. | inner lining of ducts of salivary glands and pancreatic ducts |
| 4. | lining of stomach and small intestine |
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| Statement I: | The head of cockroach is at right angle to the longitudinal body axis. |
| Statement II: | The head of cockroach is formed by the fusion of six segments. |
1. Only Statement I is correct
2. Only Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
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| Statement I: | Each thoracic segment in cockroach bears a pair of walking legs. |
| Statement II: | The first pair of wings arises from prothorax and they are called as tegmina. |
1. Only statement I is correct
2. Only statement II is correct
3. Both statement I and statement II are correct
4. Both statement I and statement II are incorrect
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