question_answer

Consider the following statements and select the correct answer using the code given below:

1. The thin film of water at the surface of ocean that receivers sunlight is known as photic zone.

2. The photic zone rarely extends deeper than 200 meters.

3. The upper half of the photic zone- the layer in which most biological productivity occurs is called euphotic zone.

4. Below the photic zone is the aphotic (dark zone) which extends to the bottom.

A) 1, 2 and 3 are correct    

B) 1, 2, 3 and 4 are correct

C) 1, 3 and 4 are correct    

D) 2, 3 and 4 are correct