Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The photic zone generally extends upto _______ metres.

• A. 200
• B. 500

Answer 1

The correct option is A 200

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Photic zone is the upper layer of the aquatic ecosystems where the light penetrates. The depth of this zone depends on the transparency of water. Both photosynthesis and respiration activity takes place in the photic zone