Frog, when on land, uses which of the following as its respiratory organs?
I: | The buccal cavity |
II: | Skin |
III: | Lungs |
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II and III |
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. |
I: | Body is divisible into head and trunk. |
II: | A neck and tail are absent. |
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. |