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[A]: Rhizobial aggregates have been obse...

[A]: Rhizobial aggregates have been observed at distinct sites on curled root hairs.
[R]: The infection thread is formed by a process of invagination of the hair cell walls in the region of curling

A

(a) If both A and R are true and R is the correct explanation of A

B

(b) If both A and R are true but R is not the correct explanation of A

C

(c) If A is true and R is false

D

(d) If both A and R are false

Text Solution

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The correct Answer is:
A
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