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Test: Conservation of Plants & Animals- 1 - UPSC MCQ


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20 Questions MCQ Test Science & Technology for UPSC CSE - Test: Conservation of Plants & Animals- 1

Test: Conservation of Plants & Animals- 1 for UPSC 2024 is part of Science & Technology for UPSC CSE preparation. The Test: Conservation of Plants & Animals- 1 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Conservation of Plants & Animals- 1 MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Conservation of Plants & Animals- 1 below.
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Test: Conservation of Plants & Animals- 1 - Question 1

What is the role of carbon dioxide in photosynthesis?

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 1
Carbon dioxide is absorbed by plants during photosynthesis, where it is used to produce oxygen and glucose, crucial for plant growth.
Test: Conservation of Plants & Animals- 1 - Question 2

How does deforestation affect the fertility of the soil?

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 2
Deforestation reduces soil fertility by causing soil erosion and removing the top fertile layer, leading to a decrease in nutrient content and productivity.
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Test: Conservation of Plants & Animals- 1 - Question 3

What book keeps a record of all endangered plants and animals?

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 3
The Red Data Book records all endangered plants and animals. It is maintained internationally and helps track the conservation status of species at risk of extinction.
Test: Conservation of Plants & Animals- 1 - Question 4

Soil erosion may lead to :

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 4
  • The removal of top fertile layer of soil is called soil erosion. 
  • Soil is a natural resource that may look robust and endless, but is in fact the fragile product of thousands of years of formation.
  • Topsoil, which lies closest to the surface of the land, contains essential nutrients for crops. It is this layer of soil that is endangered by wind and water erosion.
  • Soil erosion decreases soil fertility, which can negatively affect crop yields.
  • It also sends soil-laden water downstream, which can create heavy layers of sediment that prevent streams and rivers from flowing smoothly and can eventually lead to flooding.
Test: Conservation of Plants & Animals- 1 - Question 5
How can the movement of water from the soil surface into the ground be affected by deforestation?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 5
Deforestation reduces the infiltration rate, which is the movement of water from the soil surface into the ground, leading to lower groundwater levels and an increased risk of flooding.
Test: Conservation of Plants & Animals- 1 - Question 6

Deforestation means clearing of forests and using that land for other purposes. Trees in the forest are cut for various purposes such as procuring land for cultivation, building houses and factories, making furniture, or using wood as fuel. Some natural causes of deforestation are ______ and severe droughts.

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 6

Forest fires are one of the natural causes of deforestation. When fires occur in forests, they can destroy trees and vegetation, leading to deforestation.

Test: Conservation of Plants & Animals- 1 - Question 7
What are the purposes for which trees in the forest are cut?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 7
Trees are often cut to procure land for cultivation, build houses and factories, and make furniture or use wood as fuel, leading to deforestation.
Test: Conservation of Plants & Animals- 1 - Question 8

Desertification refers to ___________________________________.

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 8

Desertification is the process by which fertile land becomes desert, typically due to deforestation, soil erosion, and other environmental factors that degrade the soil's quality and reduce its productivity.

Test: Conservation of Plants & Animals- 1 - Question 9
Deforestation leads to the increase in the level of ______ in the atmosphere.
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 9
When trees are cut down, there is more carbon dioxide left in the air. This extra carbon dioxide can cause problems like global warming.
Test: Conservation of Plants & Animals- 1 - Question 10

That part of earth in which living organisms exist is called:

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 10

The part of earth in which living organisms are found is called biosphere. Biosphere includes lithosphere, hydrosphere and atmosphere.

Test: Conservation of Plants & Animals- 1 - Question 11
What purpose do wildlife sanctuaries, national parks, and biosphere reserves serve?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 11
Wildlife sanctuaries, national parks, and biosphere reserves are established to conserve biodiversity by protecting flora and fauna and their natural habitats from human disturbances.
Test: Conservation of Plants & Animals- 1 - Question 12
What is one consequence of deforestation on soil properties?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 12
Deforestation leads to more soil erosion as the removal of trees exposes the soil to elements, causing the top fertile layer to be washed away, which eventually results in desertification.
Test: Conservation of Plants & Animals- 1 - Question 13
What are the consequences of deforestation on the water cycle?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 13
Deforestation disturbs the water cycle by reducing the amount of water absorbed and released by trees, leading to changes in precipitation patterns and potentially causing droughts.
Test: Conservation of Plants & Animals- 1 - Question 14

__________________ is part of the Pachmarhi Biosphere Reserve.

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 14

The Pachmarhi Biosphere Reserve consists of one national park named Satpura and two wildlife sanctuaries named Bori and Pachmarhi

Test: Conservation of Plants & Animals- 1 - Question 15
What is a major threat to the survival of a variety of plants and animals on Earth?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 15
Deforestation, which involves clearing forests for other uses, is a significant threat to the survival of various plant and animal species as it destroys their natural habitats.
Test: Conservation of Plants & Animals- 1 - Question 16
What is the impact of increased carbon dioxide levels on the Earth's temperature?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 16
Increased levels of carbon dioxide in the atmosphere contribute to global warming by trapping heat rays reflected by the Earth, raising the planet's temperature.
Test: Conservation of Plants & Animals- 1 - Question 17
What are endemic species?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 17
Endemic species are those that are found exclusively in a specific geographical area and are not naturally found anywhere else, such as the Indian giant squirrel in the Pachmarhi Biosphere Reserve.
Test: Conservation of Plants & Animals- 1 - Question 18

The largest among various protected areas is a :

Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 18

Biosphere reserve is the largest among various protected areas for plants and animals. Biosphere reserves covers large area and different zone. Wildlife sanctuary and national park are small areas.

Test: Conservation of Plants & Animals- 1 - Question 19
What increases the chances of natural calamities such as floods and droughts?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 19
Deforestation increases the chances of natural calamities such as floods and droughts by disturbing the natural balance, reducing rainfall, and decreasing soil fertility.
Test: Conservation of Plants & Animals- 1 - Question 20
Why do migratory birds fly to faraway areas every year?
Detailed Solution for Test: Conservation of Plants & Animals- 1 - Question 20
Migratory birds fly to distant areas annually due to climatic changes, often to escape harsh weather conditions in their natural habitats and to find more hospitable environments for laying eggs.
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