Assertion (A): | Giraffes, in an attempt to forage leaves on tall trees, had to adapt by elongation of their necks. |
Reason (R): | This elongated neck, an acquired trait, was inherited by their progeny. |
1. | (A) is True but (R) is False |
2. | (A) is False and (R) is False |
3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
A population of a species invades a new area. Which of the following condition will lead to adaptive radiation?
1. | Area with a large number of habitats having very low food supply |
2. | Area with a single type of vacant habitat |
3. | Area with many types of vacant habitats |
4. | Area with many habitats occupied by a large number of species |