Select Chapter Topics:
Q. No.Assertion (A) : The scales of reptiles and fishes are similar in origin.
Reason (R) : All the chordates lack kidneys.
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.
Subtopic: Study of Reptilia | Study of Aves & Mammals |
67%
Please attempt this question first.
Hints
Assertion (A) : Tapeworms absorb digested food by its body surface.
Reason (R) : Tapeworms possess digestive organs.
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.
Reason (R) : Tapeworms possess digestive organs.
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.
Subtopic: Phylum Ctenophora & Platyhelminthes |
63%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion (A) : All birds, except the ones like koel (cuckoo), build nests for retiring and taking rest during night time.
Reason (R) : Koel lays its eggs in the nests of tailor bird.
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.
Reason (R) : Koel lays its eggs in the nests of tailor bird.
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.
Subtopic: Study of Aves & Mammals |
Please attempt this question first.
Hints
Assertion (A): Bats and whales are classified as mammals.
Reason (R) : Bats and whales have four-chambered heart.
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.
Reason (R) : Bats and whales have four-chambered heart.
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.
Subtopic: Study of Aves & Mammals |
78%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion(A) : Tapeworms, round worms and pin worms are endoparasites of human intestine.
Reason (R) : Improperly cooked food is the source of all intestinal infections.
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.
Reason (R) : Improperly cooked food is the source of all intestinal infections.
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.
Subtopic: Phylum Ctenophora & Platyhelminthes | Phylum Aschelminthes |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion (A) : The duck-billed platypus and the spiny ant-eater, both are egg laying animals yet they are grouped under mammals.
Reason (R) : Both of them have seven cervical vertebrae and 12 pairs of cranial nerves.
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.
Reason (R) : Both of them have seven cervical vertebrae and 12 pairs of cranial nerves.
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.
Subtopic: Study of Aves & Mammals |
64%
Please attempt this question first.
Hints
Assertion (A) : In Mollusca, feathers like gills are present in the mantle cavity.
Reason (R) : These gills have respiratory and excretory functions.
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.
Reason (R) : These gills have respiratory and excretory functions.
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.
Subtopic: Phylum Mollusca |
61%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
| Assertion (A): | Claspers are present in males of the class Chondrichthyes. |
| Reason (R): | Claspers assist copulation. |
| 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. |
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion (A) : The organisms of Platyhelminths are usually hermaphrodites.
Reason (R) : These organisms possess internal as well as external fertilization.
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.
Reason (R) : These organisms possess internal as well as external fertilization.
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.
Subtopic: Phylum Ctenophora & Platyhelminthes |
68%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Assertion (A) : Teeth of mammals are heterodont.
Reason (R) : Mammals possess more than a single tooth morphology.
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.
Reason (R) : Mammals possess more than a single tooth morphology.
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.
Subtopic: Study of Aves & Mammals |
72%
Please attempt this question first.
Hints
Select Chapter Topics:
© 2024 GoodEd Technologies Pvt. Ltd.