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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Test  >  Environmental Engineering  >  Test: Biological Zones In Lake - Civil Engineering (CE) MCQ

Biological Zones In Lake - Free MCQ Practice Test with solutions, GATE


MCQ Practice Test & Solutions: Test: Biological Zones In Lake (10 Questions)

You can prepare effectively for Civil Engineering (CE) Environmental Engineering with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Biological Zones In Lake". These 10 questions have been designed by the experts with the latest curriculum of Civil Engineering (CE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 25 minutes
  • - Number of Questions: 10

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Test: Biological Zones In Lake - Question 1
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 ______ zone lies between Euphotic and Benthic zone.

Detailed Solution: 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
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The uppermost zone in lakes is called as

Detailed Solution: 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.

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Test: Biological Zones In Lake - Question 3
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 _______ is the process of overgrowth of plants and algae in lakes.

Detailed Solution: 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
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 Which of the following promotes eutrophication of lakes?

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

Detailed Solution: 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
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Which one of the following lakes has minimum productivity?

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

Detailed Solution: 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
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Which type of pollution is a Cultural eutrophication?

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

Detailed Solution: 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
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The depth of Euphotic zone is measured by

Detailed Solution: 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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About this Civil Engineering (CE) Practice Test

This test contains 10 MCQs on Biological Zones In Lake with detailed solutions for each question. It is part of the Environmental Engineering course on EduRev, designed to align with the current Civil Engineering (CE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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