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We should care about loss in biodiversit...

We should care about loss in biodiversity in the populations of other species because of :

A

Potential loss of medicinal plants and other products yet undiscovered from threatened species

B

Potential loss of genes , some of which may code for proteins useful to humans

C

The risk of global ecological instability

D

All of the above options are correct

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The correct Answer is:
D
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Assertion : Broadly utilitarian arguments say that we should conserve biodiversity because biodiversity plays a major role in many ecosystem services that nature provides. Reason : Expolration of molecular, genetic and species level diversity to obtain the products of economic importance is include under broadly utilitarian category. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

Which of the following is not a cause for loss of biodiversity ? (a) Destruction of habitat (b) Invasion of alien species (c) Keeping animals in zoological parks (d) Over-exploitation of natural resources

Assertion : Biodiversity hotspots are the regions which possess high levels of species richness, high degree of endemism and no loss habitats. Reason : Total number of biodiversity hotspots in the world is 32 with two of these hotspots found in India. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

Which of the following statements regarding the ethical argument for conserving biodiversity is incorrect? (a) We owe to millions of plant, animal and microbes species with whom we share this planet (b) Every species has an intrinsic value only when it is of an economic value to us. (c) It is our moral duty to care for the well-being of all species i.e., our biological legacy. (d) All of these

Write note on: Role of invasive species in loss of biodiversity.

Which of the following statements is incorrect regarding biodiversity? (a) Biodiversity deals with biological and geographical units such as genes, chromosomes, species, families and biogeographic regions. (b) Biodiversity is an addition sum of genetic, taxonomic and ecosystem diversity. (c) It is a measure of the amount of resources shared by the human population. (d) None of these

Where would the greatest number of endemic species occur and why ? (a) Small volcanic archipelagos, such as the Galapagos Islands, because the abundance of unoccupied habitats favours the adaptive divergence of colonists from nearby mainland populations. (b) Large oceanic island, such as Australia, because the inhabitants have been isolated from mainland populations for a very long time. (c) On rugged landscapes, such as Patagonia, because of the high levels of natural disturbance by glaciers and earthquakes. (d) Temperate woodlands, such as those in southern England, because of the high levels of disturbance by human activity and the history of artificial selection.

Which of the following statements regarding biodiversity hotspots are incorrect? (i) High endemism (ii) High level of species richness (iii) Total number is 34 in the world (iv) Five of these occur in India (v) High alien species invasion (vi) Cover less than 2% of the earth's land area, but if properly conserved, they can reduce extinctions by about 30% (a) (i) and (ii) (b) (iv) and (v) (c) iv), (v) and (vi) (d) (iii), (iv), (v) and (vi)

Biodiversity loss occurs due to (i) habitat loss and fragmentation (ii) co-extinction (iii) over-exploitation (iv) alien species invasion. (a) (i) and (ii) (b) (i), (ii) and (iii) (c) (ii), (iii) and (iv) (d) (i), (ii), (iii) and (iv)

USHA PUBLICATION-BIODIVERSITY & CONSERVATION -ECERCISE
  1. Which of the following groups is most , threatened by global extinctio...

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  2. Which term did Edward Osborne Wilson coin for our innate appreciation ...

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  3. We should care about loss in biodiversity in the populations of other ...

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  4. The most serious consequence of a decrease in global diversity would b...

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  5. The most direct threat to biodiversity is :

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  6. Introduced species can have deleterious effects on biological communit...

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  7. Agricultural lands frequently require nutrient augmentation because :

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  8. IUCN has its headquarters at :

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  9. Which among the following category is most threatened ?

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  10. Biodiversity act of India was passed in .

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  11. The Critically Endangered and vulnerable plant species are respectivel...

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  12. Arrange the following red - list categories provided by IUCN from high...

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  13. The headquarter of IUCN - Red list is in

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  14. The art of extracting metals from their ores is called ……………

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  15. Find the odd one out of ecosystem services :

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  16. They key criteria for establishing a ' hot spot ' is / are

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  17. The concept of ' hot - spots ' was developed by :

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  18. How many ' hot spots ' now exist in the world ?

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  19. The ' hot spots ' of India include :

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  20. India ( A ) biosphere reserves , ( B ) national parks and ( C ) wildli...

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