Question

Given figure represents the different zones of a lake or a pond Identify the labeled parts X, Y, and Z and select the correct statement

A. X constitutes shallow water banks and is called the littoral zone.
B. Y constitutes the open water zone up to which light can penetrate and is called a profundal zone
C. Z constitutes the deep water zone where light cannot penetrate and is called a limnetic zone.
D. All of these

Answer 1

Hint: Lake is divided into different zones that divide the water from top to bottom.
The zones are littoral zone, limnetic zone, profundal zone, euphotic zone, and benthic zone.

Complete answer: Littoral zone is the area of the lake which is dry land sloping to the open water. They are shallow and get lots of nutrients from runoff. It has an abundance of aquatic life e.g. zooplankton, insects, etc..
Limnetic zone: They are open water areas.
They are classified as euphotic or epilimnion zone (warm water region) and the profundal zone or hypolimnion(cold water region).
Benthic zone: this is the bottom zone of the lake and consists of organic sediments and soils.

So, the correct answer is “Option A”.X constitutes shallow water banks and is called the littoral zone.

Additional Information: The portion of the euphotic zone are where the population of fish is maximum as they oxygen-rich due to contact in the air.
The profundal zone has less fish population due to too less concentration oxygen level.
The benthic zone is the digestive system of the pond.

Note: Z constitutes the limnetic zone but they are profundal zone of limnetic .
Y constitutes the euphotic zone of limnetic.