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 |
V | VI | VII | VIII | |
1. | Uterus | Urinary bladder | Rectum | Cloaca |
2. | Ureter | Urinary bladder | Rectum | Cloaca |
3. | Ureter | Urinary bladder | Cloaca | Rectum |
4. | Urethra | Urinary bladder | Cloaca | Rectum |
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 |
A | B | C | D | |
1. | Testis | Vas deferens | Fat bodies | Pituitary gland |
2. | Fat bodies | Vasa efferentia | Testis | Adrenal gland |
3. | Testis | Vas deferens | Fat bodies | Adrenal gland |
4. | Testis | Vasa efferentia | Fat bodies | Adrenal gland |
Statement I: | Morphology refers to the form and structure of animals and plants, studied as a science. |
Statement II: | Anatomy is concerned with the identification and description of the body structures of living things. |
Assertion (A): | Frogs help maintain ecological balance. |
Reason (R): | Frogs serve as an important link in the food chain and food web in the ecosystem. |
1. | (A) is True but (R) is False. |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
4. | (A) is False but (R) is True. |