Q.

Assertion: Green plants of the ecosystem are the transducers.
Reason: Producers trap the radiant energy of the sun and change it into chemical energy.

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.

(1)

Green plants of the ecosystem are the transducers because producers trap the radiant energy of the sun and change it into chemical energy. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.