344932
Assertion : Natural fragmentation of habitat leads to speciation. Reason : Artificial fragmentation of habitat leads to extinction of species.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both are correct, reason is not the correct explanation of the assertion.
BIOXII15: BIODIVERSITY AND CONSERVATION
344933
Which of the following is not an invasive alien species in the Indian context?
1 Lantana
2 Cynodon
3 Parthenium
4 Eichhornia
Explanation:
Other species from the options were introduced into India from some other parts of the world.
NCERT Exemplar
BIOXII15: BIODIVERSITY AND CONSERVATION
344934
Which of the following is not a cause for loss of biodiversity?
1 Destruction of habitat
2 Invasion by alien species
3 Keeping animals in zoological parks
4 Over-exploitation of natural resources
Explanation:
Keeping animals in zoological parks helps in conservation of biodiversity. It gives a natural and safe environment with a supervision to check their decreasing numbers.
NCERT Exemplar
BIOXII15: BIODIVERSITY AND CONSERVATION
344935
Which one of vertebrates comprises the highest number of endangered species?
1 Mammals
2 Fishes
3 Reptiles
4 Birds
Explanation:
Presently, 12 per cent of all bird species, 23 per cent of all mammal species, 32 per cent of all amphibian species in the world face the threat of extinction
344932
Assertion : Natural fragmentation of habitat leads to speciation. Reason : Artificial fragmentation of habitat leads to extinction of species.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both are correct, reason is not the correct explanation of the assertion.
BIOXII15: BIODIVERSITY AND CONSERVATION
344933
Which of the following is not an invasive alien species in the Indian context?
1 Lantana
2 Cynodon
3 Parthenium
4 Eichhornia
Explanation:
Other species from the options were introduced into India from some other parts of the world.
NCERT Exemplar
BIOXII15: BIODIVERSITY AND CONSERVATION
344934
Which of the following is not a cause for loss of biodiversity?
1 Destruction of habitat
2 Invasion by alien species
3 Keeping animals in zoological parks
4 Over-exploitation of natural resources
Explanation:
Keeping animals in zoological parks helps in conservation of biodiversity. It gives a natural and safe environment with a supervision to check their decreasing numbers.
NCERT Exemplar
BIOXII15: BIODIVERSITY AND CONSERVATION
344935
Which one of vertebrates comprises the highest number of endangered species?
1 Mammals
2 Fishes
3 Reptiles
4 Birds
Explanation:
Presently, 12 per cent of all bird species, 23 per cent of all mammal species, 32 per cent of all amphibian species in the world face the threat of extinction
344932
Assertion : Natural fragmentation of habitat leads to speciation. Reason : Artificial fragmentation of habitat leads to extinction of species.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both are correct, reason is not the correct explanation of the assertion.
BIOXII15: BIODIVERSITY AND CONSERVATION
344933
Which of the following is not an invasive alien species in the Indian context?
1 Lantana
2 Cynodon
3 Parthenium
4 Eichhornia
Explanation:
Other species from the options were introduced into India from some other parts of the world.
NCERT Exemplar
BIOXII15: BIODIVERSITY AND CONSERVATION
344934
Which of the following is not a cause for loss of biodiversity?
1 Destruction of habitat
2 Invasion by alien species
3 Keeping animals in zoological parks
4 Over-exploitation of natural resources
Explanation:
Keeping animals in zoological parks helps in conservation of biodiversity. It gives a natural and safe environment with a supervision to check their decreasing numbers.
NCERT Exemplar
BIOXII15: BIODIVERSITY AND CONSERVATION
344935
Which one of vertebrates comprises the highest number of endangered species?
1 Mammals
2 Fishes
3 Reptiles
4 Birds
Explanation:
Presently, 12 per cent of all bird species, 23 per cent of all mammal species, 32 per cent of all amphibian species in the world face the threat of extinction
344932
Assertion : Natural fragmentation of habitat leads to speciation. Reason : Artificial fragmentation of habitat leads to extinction of species.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both are correct, reason is not the correct explanation of the assertion.
BIOXII15: BIODIVERSITY AND CONSERVATION
344933
Which of the following is not an invasive alien species in the Indian context?
1 Lantana
2 Cynodon
3 Parthenium
4 Eichhornia
Explanation:
Other species from the options were introduced into India from some other parts of the world.
NCERT Exemplar
BIOXII15: BIODIVERSITY AND CONSERVATION
344934
Which of the following is not a cause for loss of biodiversity?
1 Destruction of habitat
2 Invasion by alien species
3 Keeping animals in zoological parks
4 Over-exploitation of natural resources
Explanation:
Keeping animals in zoological parks helps in conservation of biodiversity. It gives a natural and safe environment with a supervision to check their decreasing numbers.
NCERT Exemplar
BIOXII15: BIODIVERSITY AND CONSERVATION
344935
Which one of vertebrates comprises the highest number of endangered species?
1 Mammals
2 Fishes
3 Reptiles
4 Birds
Explanation:
Presently, 12 per cent of all bird species, 23 per cent of all mammal species, 32 per cent of all amphibian species in the world face the threat of extinction
