India is one of the twelve megadiversity countries with ______ of genetic resources of the world.

(a) 12.1%

(b) 18.1%

(c) 38.1%

(d) 8.1%

Concept Questions :-

Magnitude of Biodiversity
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Which of the following is not an invasive species?

(a) Parthenium hysterophorus

(b) Nelumbo (lotus)

(c) Lantana camara

(d) Eichhornia crassipes

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The total number of biodiversity hotspots in the world are

(a) 72           (b) 34              (c) 52            (d) 24.

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Which of the following statements is not true?

(a) The biodiversity decreases with increasing altitude.
(b) The biodiversity decreases with increasing pollution.
(c) The fishes show greatest biodiversity among vertebrates.
(d) The biodiversity of bryophytes is greater than that of angiosperms.

Concept Questions :-

Magnitude of Biodiversity
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One out of the following is not responsible for biodiversity loss.

(a) Alien species invasion

(b) Co-extinction

(c) Ex-situ conservation

(d) Deforestation

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One of the following statements is incorrect with reference to biodiversity. Identify it.
(a) The areas with very few plant and animal species (low species richness) with no threatened species are called biodiversity hotspots.
(b) Biodiversity increases from higher altitudes to lower altitudes.
(c) Biodiversity decreases from the equator to polar regions.
(d) Depletion in genetic diversity of crop plants is mainly due to the introduction of better varieties with high yield, disease resistance, etc.

 

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Refer the following figure represent global biodiversity. Identify A-E and choose the correct option.

 

A

B

C

D

E

(a)

Birds

Reptities

Algae

Molluscs

Mosses

(b)

Mammals

Birds

Lichens

Molluscs

Mosses

(c)

Birds

Amphiblans

Mosses

Insects

Aelg

(d)

Birds

Reptities

Algae

Insects

Mosses

 


 

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Select the correct statement about biodiversity.
(a) The desert area of Rajasthan and Gujarat have a very high level of desert animals.
(b) Large scale planting of Bt cotton has no adverse effect on biodiversity
(c) Western Ghats have a very high degree of species richness and endemism
(d) Conservation of biodiversity is just a fad pursued by the developed countries.

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The species diversity decreases from lower to higher altitudes on a mountain. This is due to
(a) increase in temperature
(b) decrease in temperature
(c) greater seasonal variability
(d) Both (b) and (c)

Concept Questions :-

Biodiversity Patterns
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Different varieties of Indian mangoes are most popular in Western and some other European countries. The varieties with different flavour, colour, sugar and fleshy content is due to
(a) genetic diversity
(b) species diversity
(c) induced mutation
(d) hybridisation

Concept Questions :-

Introduction & Types
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