In frogs, vasa efferentia:
I: | are 100-120 in number that arise from testes |
II: | enter the kidneys on their side and open into Bidder’s canal |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
1. | Testes → Vasa efferentia → Kidney → Seminal vesicle → Urogenital duct → Cloaca |
2. | Testes → Vasa efferentia → Bidder’s canal → Ureter → Cloaca |
3. | Testes → Vasa efferentia → Kidney → Bidder’s canal → Urogenital duct → Cloaca |
4. | Testes → Bidder’s canal → Kidney → Vasa efferentia → Urogenital duct → Cloaca |
The cloaca in a frog is a small, median chamber that is used to pass:
1. | only faecal matter to the exterior. |
2. | only faecal matter and urine but not sperms to the exterior. |
3. | faecal matter, urine and sperms to the exterior. |
4. | faecal matter and sperms but not urine to the exterior. |
Mesorchium in frogs:
1. | is a double fold of peritoneum that adheres testes to kidney. |
2. | is a double fold of peritoneum that adheres ovaries to kidney. |
3. | is the outer cortical part of testes. |
4. | is the outer cortical part of ovaries. |
Statement I: | In male frogs, the testes are found adhered to the upper part of the kidneys and have a functional connection with the kidneys. |
Statement II: | In female frogs, the ovaries are situated near the kidneys and there is no functional connection with the kidneys. |
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. | 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. |
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. |
1. | 100 to 200 | 2. | 750 to 1250 |
3. | 2500 to 3000 | 4. | 8000 to 10000 |
1. | they are an important source of food all over the world. |
2. | toxins derived from them can cure many human ailments. |
3. | while burrowing, they loosen soil in arid environments making the soil highly fertile. |
4. | they eat insects and protect the crop. |
I | II | III | IV | |
1. | Oesophagus | Liver | Gall bladder | Fat bodies |
2. | Pharynx | Liver | Gall bladder | Uricose glands |
3. | Buccal cavity | Gall bladder | Liver | Antennal glands |
4. | Oesophagus | Gall bladder | Liver | Fat bodies |