QUIZ – 2019: Insights Static Quiz, 16 December 2019 – ENVIRONMENT
INSIGHTS STATIC QUIZ 2019
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Question 1 of 5
1. Question
Consider the following statements.
- Examples of areas where primary succession occurs are abandoned farm lands, burned forests and lands that have been flooded.
- Primary succession is faster than secondary succession.
- Presence of soil makes the succession faster.
Which of the above statements is/are correct?
Correct
Solution: d)
Examples of areas where primary succession occurs are newly cooled lava, bare rock, newly created pond or reservoir. The establishment of a new biotic community is generally slow. Before a biotic community of
diverse organisms can become established, there must be soil. Depending mostly on the climate, it takes natural processes several hundred to several thousand years to produce fertile soil on bare rock.
Secondary succession begins in areas where natural biotic communities have been destroyed such as in abandoned farm lands, burned or cut forests, lands that have been flooded. Since some soil or sediment is present, succession is faster than primary succession.
Incorrect
Solution: d)
Examples of areas where primary succession occurs are newly cooled lava, bare rock, newly created pond or reservoir. The establishment of a new biotic community is generally slow. Before a biotic community of
diverse organisms can become established, there must be soil. Depending mostly on the climate, it takes natural processes several hundred to several thousand years to produce fertile soil on bare rock.
Secondary succession begins in areas where natural biotic communities have been destroyed such as in abandoned farm lands, burned or cut forests, lands that have been flooded. Since some soil or sediment is present, succession is faster than primary succession.
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Question 2 of 5
2. Question
Consider the following statements.
- The numbers and types of animals and decomposers remains constant during ecological succession.
- At any time during primary or secondary succession, natural or human induced disturbances always discourage or eliminate some species.
Which of the above statements is/are correct?
Correct
Solution: d)
Description of ecological succession usually focuses on changes in vegetation. However, these vegetational changes in turn affect food and shelter for various types of animals. Thus, as succession proceeds, the numbers and types of animals and decomposers also change.
At any time during primary or secondary succession, natural or human induced disturbances (fire, deforestation, etc.), can convert a particular seral stage of succession to an earlier stage. Also such disturbances create new conditions that encourage some species and discourage or eliminate other species.
Incorrect
Solution: d)
Description of ecological succession usually focuses on changes in vegetation. However, these vegetational changes in turn affect food and shelter for various types of animals. Thus, as succession proceeds, the numbers and types of animals and decomposers also change.
At any time during primary or secondary succession, natural or human induced disturbances (fire, deforestation, etc.), can convert a particular seral stage of succession to an earlier stage. Also such disturbances create new conditions that encourage some species and discourage or eliminate other species.
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Question 3 of 5
3. Question
Consider the following statements regarding Keystone species.
- The top predators are considered as keystone species.
- If keystone species are lost, it will lead to the degradation of whole ecosystem.
- Plants are not considered as Keystone species.
Which of the above statements is/are correct?
Correct
Solution: c)
A keystone species is a species that has a disproportionately large effect on its natural environment relative to its abundance. Such species are described as playing a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community.
A keystone species is a plant or animal that plays a unique and crucial role in the way an ecosystem functions.
Top predators (Lion, Tiger, Crocodile, and Elephant) are considered as keystone species because it regulates all other animal population indirectly. Hence top predators are given much consideration in conservation.
If keystone species are lost, it will lead to the degradation of whole ecosystem. For example certain plant species (ebony tree, Indian-laurel) exclusively depends upon bats for its pollination. If the bat population is reduced then regeneration of particular plants becomes more difficult.
Incorrect
Solution: c)
A keystone species is a species that has a disproportionately large effect on its natural environment relative to its abundance. Such species are described as playing a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community.
A keystone species is a plant or animal that plays a unique and crucial role in the way an ecosystem functions.
Top predators (Lion, Tiger, Crocodile, and Elephant) are considered as keystone species because it regulates all other animal population indirectly. Hence top predators are given much consideration in conservation.
If keystone species are lost, it will lead to the degradation of whole ecosystem. For example certain plant species (ebony tree, Indian-laurel) exclusively depends upon bats for its pollination. If the bat population is reduced then regeneration of particular plants becomes more difficult.
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Question 4 of 5
4. Question
Identify the national park based on following features:
- It is a part of world’s ‘hottest hotspots of biological diversity.
- It is home to unique, threatened and endangered species like the lion-tailed macaques
- Rivers Tunga, Bhadra and Netravati, originate from the heart of this National Park.
Select the correct answer code:
Correct
Solution: a)
The Kudremukh National Park is the second largest Wildlife Protected Area (600.32 km2) belonging to a tropical wet evergreen type of forest in the Western Ghats. Kudremukh National Park is located in Dakshina Kannada, Udupi District and Chikkamagaluru districts of the State of Karnataka.
Incorrect
Solution: a)
The Kudremukh National Park is the second largest Wildlife Protected Area (600.32 km2) belonging to a tropical wet evergreen type of forest in the Western Ghats. Kudremukh National Park is located in Dakshina Kannada, Udupi District and Chikkamagaluru districts of the State of Karnataka.
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Question 5 of 5
5. Question
Herpetologists study on
