Biodiversity and its Conservation Test 11

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Biodiversity and its Conservation Test 11

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Weekly Quiz Competition

Question 1
1 / -0

Pollution, climate changes, over-exploitation by humans etc. are responsible for changes in the ecosystem. Change in an ecosystem is responsible for depletion in biodiversity which directly or indirectly affects human beings and their surroundings. So it is important to conserve biodiversity. There are various methods like in-situ conservation, ex situ conservation by which we can conserve our biodiversity.
Q. How many biodiversity hot-spots are identified globally ?

A
A. 20

B
B. 3

C
C. 34

D
D. 50

Solution

There are more than 30 biodiversity hot-spots in the world. India has 4 biodiversity hot-spots.
Question 2
1 / -0

Pollution, climate changes, over-exploitation by humans etc. are responsible for changes in the ecosystem. Change in an ecosystem is responsible for depletion in biodiversity which directly or indirectly affects human beings and their surroundings. So it is important to conserve biodiversity. There are various methods like in-situ conservation, ex situ conservation by which we can conserve our biodiversity.
Q. Name the National Aquatic Animal of India ?

A
A. Sea-horse

B
B. Gangetic shark

C
C. Blue whale

D
D. River dolphin

Solution

River dolphin is India's national aquatic animal. To save dolphins from extinction, the Union government has declared them as the national aquatic animal.
Question 3
1 / -0

Pollution, climate changes, over-exploitation by humans etc. are responsible for changes in the ecosystem. Change in an ecosystem is responsible for depletion in biodiversity which directly or indirectly affects human beings and their surroundings. So it is important to conserve biodiversity. There are various methods like in-situ conservation, ex situ conservation by which we can conserve our biodiversity.
Q. Main cause of extinction of animals and plants is :

A
A. Habitat loss and fragmentation

B
B. Competition between species

C
C. Over-exploitation

D
D. Alien species invasion.

Solution

Due to habitat loss animals migrate and lose their favourable condition, food, temperature, water that makes it difficult to survive and become extinct.
Question 4
1 / -0

Pollution, climate changes, over-exploitation by humans etc. are responsible for changes in the ecosystem. Change in an ecosystem is responsible for depletion in biodiversity which directly or indirectly affects human beings and their surroundings. So it is important to conserve biodiversity. There are various methods like in-situ conservation, ex situ conservation by which we can conserve our biodiversity.
Q. Species at the high risk of extinction in the future is called :

A
A. Vulnerable

B
B. Extinct

C
C. Endemic

D
D. Critically Endangered

Solution

The species of an organism lasting with the change in suitable condition of survival with the time. Such species are called critically endangered.
Question 5
1 / -0

Pollution, climate changes, over-exploitation by humans etc. are responsible for changes in the ecosystem. Change in an ecosystem is responsible for depletion in biodiversity which directly or indirectly affects human beings and their surroundings. So it is important to conserve biodiversity. There are various methods like in-situ conservation, ex situ conservation by which we can conserve our biodiversity.
Q. Protected areas are example of

A
A. In-situ conservation

B
B. Ex-situ conservation

C
C. Cryopreservation

D
D. Green houses.

Solution

Conservation of plants and species within the suitable boundary of natural surroundings.
Question 6
1 / -0

India is divided into 10 biogeographical regions. Varying physical conditions and species grouping India has rich species diversity. Tropics are a rich centre of biodiversity. Warm temperature, high humidity in tropical areas provide favourable conditions throughout the year. Rich diversity is important for stability, productivity for ecosystems.
Q. Which among the following represents diversity at ecosystem level ?

A
A. Genetic diversity

B
B. Ecological diversity

C
C. Species diversity

D
D. Species evenness

Solution

Diversity of plants and animals in the ecosystem is called ecological diversity.
Question 7
1 / -0

India is divided into 10 biogeographical regions. Varying physical conditions and species grouping India has rich species diversity. Tropics are a rich centre of biodiversity. Warm temperature, high humidity in tropical areas provide favourable conditions throughout the year. Rich diversity is important for stability, productivity for ecosystems.
Q. When does the group represent minimum species diversity among vertebrates ?

A
A. Birds

B
B. Mammals

C
C. Reptiles

D
D. Amphibians

Solution

Among the vertebrates, minimum diversity is represented by amphibians and followed by reptiles, birds and mammals.
Question 8
1 / -0

India is divided into 10 biogeographical regions. Varying physical conditions and species grouping India has rich species diversity. Tropics are a rich centre of biodiversity. Warm temperature, high humidity in tropical areas provide favourable conditions throughout the year. Rich diversity is important for stability, productivity for ecosystems.
Q. Which of the following taxon shows maximum species diversity ?

A
A. Fishes

B
B. Beetles

C
C. Orchids

D
D. Ants

Solution

Beatles show maximum diversity in species as they represent the largest order of insects.
Question 9
1 / -0

India is divided into 10 biogeographical regions. Varying physical conditions and species grouping India has rich species diversity. Tropics are a rich centre of biodiversity. Warm temperature, high humidity in tropical areas provide favourable conditions throughout the year. Rich diversity is important for stability, productivity for ecosystems.
Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Tropics have more biodiversity.
Reason (R) : Climate of the tropical region is more seasonal.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

Tropics have more biodiversity due to warm temperature and high humidity.
Question 10
1 / -0

India is divided into 10 biogeographical regions. Varying physical conditions and species grouping India has rich species diversity. Tropics are a rich centre of biodiversity. Warm temperature, high humidity in tropical areas provide favourable conditions throughout the year. Rich diversity is important for stability, productivity for ecosystems.
Q. What is the approximate ratio of animals and plant species in our country ?

A
A. 3 : 1

B
B. 2 : 1

C
C. 1 : 3

D
D. 1 : 2

Solution

Ratio of plants and species in India is 2 : 1.
Question 11
1 / -0

Read the following text and answer the following question on the basis of the same:
Excessive exploitation of species, whether a plant or animal reduces the size of its population, so it becomes vulnerable to extinction. Such as Dodo and passenger pigeons have become extinct due to over exploitation by humans. Thus, the world is facing accelerated rates of species extinctions, largely due to human interference.
Q. Identify a cause of biodiversity loss that is not included in the evil quartet?

A
A. Coextinction

B
B. Pollution

C
C. Alien species invasion

D
D. Habitat loss and fragmentation

Solution

Evil quartet, i.e., four major causes of biodiversity loss are habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction.
Question 12
1 / -0

Read the following text and answer the following question on the basis of the same:
Excessive exploitation of species, whether a plant or animal reduces the size of its population, so it becomes vulnerable to extinction. Such as Dodo and passenger pigeons have become extinct due to over exploitation by humans. Thus, the world is facing accelerated rates of species extinctions, largely due to human interference.
Assertion : Pollution reduces species biodiversity.
Reason : Spillover of oil in the sea causes the death of several marine animals.

A
A. Both assertion and reason are true and reason is the correct explanation of assertion.

B
B. Both assertion and reason are true but reason is not the correct explanation of assertion.

C
C. Assertion is true but reason is false.

D
D. Both assertion and reason are false.

Solution

Spillover of oil in sea causes death of several marine animals and this pollution reduces species biodiversity.
Question 13
1 / -0

Read the following text and answer the following question on the basis of the same:
Excessive exploitation of species, whether a plant or animal reduces the size of its population, so it becomes vulnerable to extinction. Such as Dodo and passenger pigeons have become extinct due to over exploitation by humans. Thus, the world is facing accelerated rates of species extinctions, largely due to human interference.
Q. The species that have become extinct due to over exploitation is/are :

A
A. Stellar sea cow

B
B. Yucca moth

C
C. Blatta orientalis

D
D. Nile Perch

Solution

Steller's sea cow has become extinct in the last 500 years due to overexploitation by humans.
Question 14
1 / -0

Read the following text and answer the following question on the basis of the same:
Excessive exploitation of species, whether a plant or animal reduces the size of its population, so it becomes vulnerable to extinction. Such as Dodo and passenger pigeons have become extinct due to over exploitation by humans. Thus, the world is facing accelerated rates of species extinctions, largely due to human interference.
Q. ___________is the first major cause of species extinction.

A
A. Coextinction

B
B. Over exploitation

C
C. Habitat destruction

D
D. Alien species invasion

Solution

Habitat destruction is an important cause of known extinctions. As deforestation proceeds in tropical forests, this promises to become THE cause of mass extinctions caused by human activity.
All species have specific food and habitat needs. The more specific these needs and localized the habitat, the greater the vulnerability of species to loss of habitat to agricultural land, livestock, roads and cities. In the future, the only species that survive are likely to be those whose habitats are highly protected, or whose habitat corresponds to the degraded state associated with human activity (human commensals).
Question 15
1 / -0

Read the following text and answer the following question on the basis of the same:
Excessive exploitation of species, whether a plant or animal reduces the size of its population, so it becomes vulnerable to extinction. Such as Dodo and passenger pigeons have become extinct due to over exploitation by humans. Thus, the world is facing accelerated rates of species extinctions, largely due to human interference.
Q. Factors which make species susceptible to extinction are:

A
A. Small population size

B
B. Higher status of trophic level

C
C. Inability to switch over to alternate food

D
D. All of the above

Solution

Population traits which make species susceptible to extinction are: small population, higher status of trophic level and inability to switch over to alternate foods.

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Re-Attempt Weekly Quiz Competition

Biodiversity and its Conservation Test 11

Result

Biodiversity and its Conservation Test 11

Score

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Rank

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SHARING IS CARING

Question 1

A. 20

B. 3

C. 34

D. 50

Solution

Question 2

A. Sea-horse

B. Gangetic shark

C. Blue whale

D. River dolphin

Solution

Question 3

A. Habitat loss and fragmentation

B. Competition between species

C. Over-exploitation

D. Alien species invasion.

Solution

Question 4

A. Vulnerable

B. Extinct

C. Endemic

D. Critically Endangered

Solution

Question 5

A. In-situ conservation

B. Ex-situ conservation

C. Cryopreservation

D. Green houses.

Solution

Question 6

A. Genetic diversity

B. Ecological diversity

C. Species diversity

D. Species evenness

Solution

Question 7

A. Birds

B. Mammals

C. Reptiles

D. Amphibians

Solution

Question 8

A. Fishes

B. Beetles

C. Orchids

D. Ants

Solution

Question 9

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

Question 10

A. 3 : 1

B. 2 : 1

C. 1 : 3

D. 1 : 2

Solution

Question 11

A. Coextinction

B. Pollution

C. Alien species invasion

D. Habitat loss and fragmentation

Solution

Question 12

A. Both assertion and reason are true and reason is the correct explanation of assertion.

B. Both assertion and reason are true but reason is not the correct explanation of assertion.

C. Assertion is true but reason is false.

D. Both assertion and reason are false.

Solution