Column I | Column II | ||
a. | Pennatula | (i) | Sea-lily |
b. | Gorgonia | (ii) | Sea-hare |
c. | Antedon | (iii) | Sea-pen |
d. | Aplysia | (iv) | Sea-fan |
(v) | Sea-urchin |
(i) | Open circulatory system |
(ii) | Closed circulatory system |
(iii) | Earthworm |
(iv) | Malpighian tubules |
(v) | Nephridia |
(vi) | Cockroach |
Assertion(A): | The primary character of chordates is the presence of a dorsal hollow nerve cord. |
Reason(R): | Vertebral column is derived from the notochord. |
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. |
Assertion (A): | The phylum Aschelminthes represent pseudocoelomates |
Reason (R): | In Aschelminthes, mesoderm is present as scattered pouches in between ectoderm and endoderm |
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. |
Assertion (A): | Respiration occurs through the general body surface in Cephalochordates. |
Reason (R): | Digestive tract is incomplete in Cephalochordates. |
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. |
Assertion (A) : | Birds possess moist skin. |
Reason (R) : | Birds possess oil glands throughout their body. |
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. |
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. |
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. |
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. |