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Q. No.Frogs exhibit sexual dimorphism. Male frogs can be distinguished from the females by the presence of:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| 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. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Frogs: Anatomy (Male Reproductive System) |Â Frogs: Anatomy (Female Reproductive System) |
 70%
Level 2: 60%+
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A pair of oviducts arising from the ovaries in female frogs:
| 1. | join to form a single median duct that opens into the cloaca. |
| 2. | opens into the cloaca separately. |
| 3. | opens separately to the exterior through the skin. |
| 4. | join to form a single median duct that opens into Bidder’s canal. |
Subtopic: Â Frogs: Anatomy (Female Reproductive System) |
 73%
Level 2: 60%+
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The number of ova that can be laid by a mature female frog at a time varies between:
| 1. | 100 to 200 | 2. | 750 to 1250 |
| 3. | 2500 to 3000 | 4. | 8000 to 10000 |
Subtopic: Â Frogs: Anatomy (Female Reproductive System) |
 93%
Level 1: 80%+
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In frog:
| 1. | Fertilisation is external, takes place in water while development involves a larval stage called tadpole that undergoes metamorphosis to form the adult. |
| 2. | Fertilisation is internal, takes place inside the female body while development involves a larval stage called tadpole that undergoes metamorphosis to form the adult. |
| 3. | Fertilisation is external, takes place in water while development involves a larval stage called instar that undergoes paurometabolous metamorphosis to form the adult. |
| 4. | Fertilisation is internal, takes place inside the female body while development involves a larval stage called instar that moults 13 times to form the adult. |
Subtopic: Â Frogs: Anatomy (Female Reproductive System) |
 93%
Level 1: 80%+
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The figure shows the female reproductive system of a frog. Identify A, B, C and D:
| A | B | C | D | |
| 1. | Ova | Ovary | Ureter | Urinary bladder |
| 2. | Ovary | Oviduct | Ureter | Urinary bladder |
| 3. | Ova | Oviduct | Urethra | Urinary bladder |
| 4. | Ova | Oviduct | Ureter | Cloaca |
Subtopic: Â Frogs: Anatomy (Female Reproductive System) |
 78%
Level 2: 60%+
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Q. No.
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