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UPSC Exam  >  UPSC Test  >  Geography (Prelims) by Valor Academy  >  Important Questions: Environment - UPSC MCQ

Important Questions: Environment - Free MCQ Test with solutions for UPSC


MCQ Practice Test & Solutions: Important Questions: Environment (10 Questions)

You can prepare effectively for UPSC Geography (Prelims) by Valor Academy with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Important Questions: Environment". These 10 questions have been designed by the experts with the latest curriculum of UPSC 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 15 minutes
  • - Number of Questions: 10

Sign up on EduRev for free to attempt this test and track your preparation progress.

Important Questions: Environment - Question 1
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Which of the following best defines the natural environment?

Detailed Solution: Question 1

The natural environment encompasses elements created by nature, including land, water, air, plants, and animals, which form the basis of life on Earth.

Important Questions: Environment - Question 2
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Identify the following figure 

Detailed Solution: Question 2

A desert ecosystem is defined by interactions between organism populations, the climate in which they live, and any other non-living influences on the habitat.

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Important Questions: Environment - Question 3
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What is the lithosphere?

Detailed Solution: Question 3

The lithosphere is the solid crust or the hard-top layer of the earth, composed of rocks and minerals, and is covered by a thin layer of soil.

Important Questions: Environment - Question 4
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Which of the following is a major component of the biotic environment?

Detailed Solution: Question 4

The biotic environment includes living components such as plants and animals, which interact and depend on each other for survival.

Important Questions: Environment - Question 5
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The ______ holds the atmosphere around the earth.

Detailed Solution: Question 5

The correct answer is:

c) Gravitational force 

Explanation:

  • The gravitational pull of the Earth is what holds the atmosphere in place.

  • Atmospheric pressure (a) is the force exerted by the weight of the air, but it doesn’t "hold" the atmosphere.

  • Pressure (b) is too general and doesn’t explain why the atmosphere stays around Earth.

  • The gravitational force (c) of the Earth holds the atmosphere around it.

  • Humidity (d) refers to moisture in the air, which is irrelevant.

Final Answer:
c) Gravitational Force

Important Questions: Environment - Question 6
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Aquariums are considered a natural ecosystem.

Detailed Solution: Question 6

Aquariums are not considered a natural ecosystem as they are human-made environments designed to replicate natural aquatic habitats for educational, recreational, or research purposes.

Important Questions: Environment - Question 7
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Which of the following are abiotic component?
(1) Soil
(2) Air
(3) Crab
(4) Water 
(5) Jellyfish
(6) Rocks

Detailed Solution: Question 7

Abiotic components are non-living elements of the environment. In this context:

  • Soil - A vital abiotic component that supports plant life.
  • Air - Essential for respiration in living organisms.
  • Water - Crucial for all forms of life.
  • Rocks - Non-living materials that form the Earth's crust.

In contrast, Crab and Jellyfish are living organisms, thus they are classified as biotic components.

Important Questions: Environment - Question 8
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What is the main function of the atmosphere?

Detailed Solution: Question 8

The atmosphere acts as a blanket of air that surrounds the earth, providing essential gases for breathing, protecting living organisms from harmful solar radiation, and helping to regulate temperature.

Important Questions: Environment - Question 9
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How do plants and animals depend on each other?

Detailed Solution: Question 9

Plants and animals are interdependent; plants provide food and habitats for animals, while animals assist in pollination and seed dispersal, facilitating plant reproduction and growth.

Important Questions: Environment - Question 10
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Which component is essential for the process of photosynthesis in plants?

Detailed Solution: Question 10

Photosynthesis in plants requires carbon dioxide, which is absorbed from the atmosphere, along with sunlight and water, to produce food and oxygen.

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About this UPSC Practice Test

This test contains 10 MCQs on Important Questions: Environment with detailed solutions for each question. It is part of the Geography (Prelims) by Valor Academy course on EduRev, designed to align with the current UPSC 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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If you found this Important Questions: Environment MCQ Test helpful, you can further enhance your UPSC preparation with in-depth courses on EduRev, for all the subjects and topics available in Geography (Prelims) by Valor Academy course. The course offers:
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  • MCQ Test: variety of questions as per the pattern of UPSC exam
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