1. | Rana temporaria | 2. | Rana tigrina |
3. | Bufo bufo | 4. | Bufo melanostictus |
Assertion (A): | Rana tigrina is cold-blooded or poikilotherm. |
Reason (R): | Its body temperature varies with the temperature of the environment. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Statement I: | The colour of dorsal side of body is generally olive green with dark irregular spots. |
Statement II: | On the ventral side, the skin is uniformly pale yellow. |
1. | Statement I is correct, Statement II is correct |
2. | Statement I is incorrect, Statement II is correct |
3. | Statement I is correct, Statement II is incorrect |
4. | Statement I is incorrect, Statement II is incorrect |
1. | drinks a lot of water and passes a lot of dilute urine. |
2. | drinks only some water and meets its requirements from metabolic water. |
3. | drinks only some water and passes a highly concentrated urine |
4. | never drinks water but absorbs it through the skin. |
Which of the following statements regarding morphology of frog is not true?
I: | Above the mouth, a pair of nostrils is present. |
II: | Eyes are bulged and covered by a nictitating membrane that protects them while on land. |
III: | On either side of eyes, a membranous tympanum (ear) receives sound signals. |
1. Only II
2. Only II and III
3. Only I
4. None, all statements are correct
In Rana tigrina:
a. The hind limbs end in four digits
b. The hind limbs are larger and muscular than fore limbs.
c. The fore limbs end in five digits.
d. Feet have webbed digits that help in swimming.
1. Only a and b are correct
2. Only c and d are correct
3. Only a and c are correct
4. Only b and d are correct
I: | sound producing vocal sacs which are absent in female frogs. |
II: | a copulatory pad on the first digit of the hind limbs which is absent in female frogs. |
Assertion (A): | The alimentary canal in frogs is short. |
Reason (R): | Frogs are carnivores. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
1. | Buccal cavity → Pharynx → Oesophagus → Stomach → Intestine → Rectum → Cloaca |
2. | Buccal cavity → Oesophagus → Pharynx → Stomach → Intestine → Rectum → Cloaca |
3. | Buccal cavity → Pharynx → Oesophagus → Stomach → Intestine → Cloaca → Rectum |
4. | Buccal cavity → Oesophagus → Pharynx → Stomach → Intestine → Cloaca → Rectum |