Where in a lake is the benthic zone?

a. above the limnetic zone

b. on the surface near the middle

c. along the bottom

d. in the shallow water near the shore

C. Along the bottom

Explanation:

The benthic zone is an lowermost ecological region of the aquatic water body like ocean, river, lakes and pond. It includes the sediment surface and the layers of water above it. It receives very little sunlight penetration of only 1%. As a result of this, the zone remains dark and animals show bio-luminescence in order to search and capture prey.

On the basis of the above explanation, the benthic zone in a lake can be found C.along the bottom.  

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a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.