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UPSC Exam  >  UPSC Tests  >  Geography for UPSC CSE  >  Important Questions: Environment - UPSC MCQ

Important Questions: Environment - UPSC MCQ


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10 Questions MCQ Test Geography for UPSC CSE - Important Questions: Environment

Important Questions: Environment for UPSC 2025 is part of Geography for UPSC CSE preparation. The Important Questions: Environment questions and answers have been prepared according to the UPSC exam syllabus.The Important Questions: Environment MCQs are made for UPSC 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Important Questions: Environment below.
Solutions of Important Questions: Environment questions in English are available as part of our Geography for UPSC CSE for UPSC & Important Questions: Environment solutions in Hindi for Geography for UPSC CSE course. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free. Attempt Important Questions: Environment | 10 questions in 15 minutes | Mock test for UPSC preparation | Free important questions MCQ to study Geography for UPSC CSE for UPSC Exam | Download free PDF with solutions
Important Questions: Environment - Question 1
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Which of the following best defines the natural environment?

Detailed Solution for Important Questions: Environment - 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 for Important Questions: Environment - 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 for Important Questions: Environment - 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 for Important Questions: Environment - 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 for Important Questions: Environment - 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 for Important Questions: Environment - 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 for Important Questions: Environment - 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 for Important Questions: Environment - 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 for Important Questions: Environment - 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 for Important Questions: Environment - 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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Important Questions: Environment

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