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Test: Biological Zones In Lake


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10 Questions MCQ Test Environmental Engineering | Test: Biological Zones In Lake

Test: Biological Zones In Lake for Chemical Engineering 2022 is part of Environmental Engineering preparation. The Test: Biological Zones In Lake questions and answers have been prepared according to the Chemical Engineering exam syllabus.The Test: Biological Zones In Lake MCQs are made for Chemical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Biological Zones In Lake below.
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Test: Biological Zones In Lake - Question 1

 ______ zone lies between Euphotic and Benthic zone.

Detailed Solution for Test: Biological Zones In Lake - Question 1

Explanation: Littoral zone lies between Euphotic and Benthic zone. The growth of aquatic plants takes place in this zone.

Test: Biological Zones In Lake - Question 2

The uppermost zone in lakes is called as

Detailed Solution for Test: Biological Zones In Lake - Question 2

Explanation: The uppermost zone in lakes is called as Euphotic zone where sunlight passes through the lake and growth of plants takes place.

Test: Biological Zones In Lake - Question 3

 _______ is the process of overgrowth of plants and algae in lakes.

Detailed Solution for Test: Biological Zones In Lake - Question 3

Explanation: The process of overgrowth of plants and algae in lakes is called Eutrophication. It decreases the oxygen concentration of water.

Test: Biological Zones In Lake - Question 4

 Which of the following promotes eutrophication of lakes?

Detailed Solution for Test: Biological Zones In Lake - Question 4

Explanation: Phosphorous promotes the eutrophication of lakes as it is helpful for the growth of plants in lakes. It can easily reach the lakes through industrial water.

Test: Biological Zones In Lake - Question 5

 In which zone, decomposition of the dead organism takes place?

Detailed Solution for Test: Biological Zones In Lake - Question 5

Explanation: In Benthic zone, the dead organism settled down where their decomposition takes place by the bacteria.

Test: Biological Zones In Lake - Question 6

Which one of the following lakes has minimum productivity?

Detailed Solution for Test: Biological Zones In Lake - Question 6

Explanation: Oligotrophic lake has a minimum productivity due to the presence of low phosphorous, nitrogen and other nutrients in the lake.

Test: Biological Zones In Lake - Question 7

________ is the process of acceleration of eutrophication due to increased phosphorous content in lakes.

Detailed Solution for Test: Biological Zones In Lake - Question 7

Explanation: Cultural eutrophication is the acceleration of eutrophication due to excessive nutrients in the water. It results in the death of aquatic plants and animals.

Test: Biological Zones In Lake - Question 8

Which type of pollution is a Cultural eutrophication?

Detailed Solution for Test: Biological Zones In Lake - Question 8

Explanation: Cultural eutrophication is a water pollution due to the presence of excessive nutrients from house waste, industries, etc. that pollutes the lake, decreases the oxygen level and destroys the aquatic ecosystem.

Test: Biological Zones In Lake - Question 9

 The lakes are classified into how many types on the basis of productivity?

Detailed Solution for Test: Biological Zones In Lake - Question 9

Explanation: The lakes are classified into 4 types on the basis of productivity, namely Senescent, Oligotrophic, Eutrophic and Mesotrophic.

Test: Biological Zones In Lake - Question 10

The depth of Euphotic zone is measured by

Detailed Solution for Test: Biological Zones In Lake - Question 10

Explanation: The depth of Euphotic zone is measured by Secchi disk where it is put in the lake and the depth at which the disk becomes invisible is taken as the depth of Euphotic zone.

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