Statement A: | Reptiles have a 3-chambered heart, except crocodiles which have a 2-chambered heart. |
Statement B: | Superclass Pisces shows single circulation as opposed to class Aves which shows double circulation. |
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 |
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. |