Question

The given figure represents the different zonation in deep lake. Which of the following is incorrect regarding it?

• A. Y represents light and oxygen levels.
• B. Only consumers are found in E.
• C. Producers do not occur in A.
• D. D receives light at or below compensation point.

Answer 1

The correct option is A Y represents light and oxygen levels.

The vertical zones of the ocean are determined on the basis of the availability of light for photosynthesis. The lighted up area up to 200 m forms the photic or euphotic zone.

The next zone up to the depth of 200 to 2000 m gets less amount light which is insufficient for photosynthesis from the disphotic. Below 2000 m is the area of perpetual darkness, the abyssal zone.

So, the correct option is 'Y represents light and oxygen levels.'