Question

Assertion (A): Key is a taxonomical aids:
used for phylogeny purposes to
establish relationships among different
organisms.
Reason (R): Keys are generally
explanatory details and confined to a
particular organism.​

Answer 1

Answer:

both A and R are correct and R is correct explanation of A

Explanation:

Answer 2

Both the sentences given in the question are correct and Reason is the right explaination of the assertion.

OTHER POINTS :

1. Key is a type of aid of taxonomy in which we can use it to identify animals and plants on the basis of same characters and different characters in them.

2. In nature, keys are of analytical type.

3. It is required to choose right option between the 2 contrasting statements of the species to identify accurately.