Consider the given two statements:
I: | The vision in cockroach can be best described as a mosaic vision. |
II: | This is a nocturnal vision with more sensitivity but less resolution. |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. Both I and II are incorrect
4. II is incorrect and I is correct
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1. | Paurometabolous with nymph moulting about 13 times to reach the adult form and the next to last nymphal stage has wing pads. |
2. | Paurometabolous with nymph moulting about 13 times to reach the adult form and the next to last nymphal stage has wings. |
3. | Holometabolous with nymph moulting about 13 times to reach the adult form and the next to last nymphal stage has wing pads. |
4. | Holometabolous with nymph moulting about 13 times to reach the adult form and the next to last nymphal stage has wings. |
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1. | It is of open type. |
2. | It delivers oxygen to the tissues. |
3. | Heart lies along the mid dorsal line of thorax and abdomen. |
4. | The haemolymph is composed of colourless plasma and haemocytes. |
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I: | Malpighian tubules are used in osmoregulation and excretion in cockroach. |
II: | Malpighian tubules are present at the junction of the midgut and the hindgut in the alimentary canal of cockroach. |
1. | Only I is correct |
2. | Only II is correct |
3. | Both I and II are correct |
4. | Both I and II are incorrect |
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Consider the given statements:
I: | The crop in the alimentary canal of cockroach is also known as proventriculus, has six highly chitinous plates called teeth and helps in grinding food particles. |
II: | The gizzard is sac-like structure used for storing food in cockroach. |
1. | Only I is correct |
2. | Only II is correct |
3. | Both I and II are correct |
4. | Both I and II are incorrect |
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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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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. |
The main function of adipose tissue is
1. | providing insulation from heat and cold |
2. | providing protective padding around organs |
3. | to be a reserve of lipids |
4. | providing feedback for hunger and diet to the brain |
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Anal styles are borne on the:
1. | 9th segment only in female cockroach |
2. | 9th segment only in male cockroach |
3. | 10th segment only in female cockroach |
4. | 10th segment only in male cockroach |
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