Q.

Assertion: Cytokinins promote cell division in plants.
Reason: Full form of ABA is abscisic acid.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.  
3 Assertion is true but Reason is false.  
4 Assertion is false but Reason is true  

Ans.

(2)

Both the statements are true, but full form of ABA has no relation with the function of cytokinin. Thus, both assertion and reason are correct but reason is not the correct explanation of the assertion.