21.
Which one of the following pairs of organisms are exotic species introduced in India?
A
Lantana camara, water hyacinth
B
Water hyacinth, Prosopis cinereria
C
Nile perch, Ficus religiosa
D
Ficus religiosa, Lantana camara
Answer :
Lantana camara, water hyacinth
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22.
At which latitude, heat gain through insolation approximately equals heat loss through terrestrial radiation?
A
$$22{\frac{1}{2}^ \circ }$$ North and South
B
40° North and South
C
$$42{\frac{1}{2}^ \circ }$$ North and South
D
66° North and South
Answer :
40° North and South
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23.
In which of the following both pairs have correct combination:
A
In situ conservation : Cryopreservation
Ex situ conservation : Wildlife Sanctuary
B
In situ conservation : Seed Bank
Ex situ conservation : National Park
C
In situ conservation : Tissue culture
Ex situ conservation : Sacred groves
D
In situ conservation : National Park
Ex situ conservation : Botanical Garden
Answer :
In situ conservation : National Park
Ex situ conservation : Botanical Garden
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24.
Which one of the following is not observed in biodiversity hotspots?
A
Endemism
B
Accelerated species loss
C
Lesser inter-specific competition
D
Species richness
Answer :
Lesser inter-specific competition
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25.
Tiger is not a resident in which one of the following national park?
A
Sunderbans
B
Gir
C
Jim Corbett
D
Ranthambhor
Answer :
Gir
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26.
Reason of diversity in living beings is due to
A
mutation
B
long term evolutionary change
C
gradual change
D
short term evolutionary change
Answer :
long term evolutionary change
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27.
In your opinion, which is the most effective way to conserve the plant diversity of an area?
A
By tissue culture method
B
By creating biosphere reserve
C
By creating botanical garden
D
By developing seed bank
Answer :
By developing seed bank
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28.
Fertility of soil is measured by its ability to
A
retain nutrients
B
hold organic materials
C
hold water
D
support life
Answer :
support life
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29.
Which of the following is the most important cause for animals and plants being driven to extinction?
A
Habitat loss and fragmentation
B
Drought and floods
C
Economic exploitation
D
Alien species invasion
Answer :
Habitat loss and fragmentation
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30.
The region of Biosphere Reserve which is legally protected and where no human activity is allowed is known as:
A
Buffer zone
B
Transition zone
C
Restoration zone
D
Core zone
Answer :
Core zone
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