Comprehension
Read the following passage and answer the questions that follow:
India is one of the megadiverse countries housing around 8·1 per cent of global species diversity, although its land area is only 2·4 per cent of the world’s land area. Many of the species are highly threatened due to human activities like deforestation, mining and habitat fragmentation. Laws like Wildlife (Protection) Act, 1972 were enacted by the Government of India to preserve our biological wealth. Various conservation measures are being implemented to save the threatened species. The following bar graph shows the number of species conserved under different biodiversity conservation methods.

Which other methods shown in the diagram are opposite to the one identified by you in question ? How are these two conservation approaches different?
(c) Write two features of Biodiversity hotspots.
(c) To which category do sacred groves belong and how do they help in bio-conservation?
Question: 1

Which method conserves the highest number of species? Is it ex situ or in situ conservation?

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Solution and Explanation

Observation from the graph:

The graph shows that Wildlife Sanctuaries conserve the highest number of species.

\[ \text{Number of species conserved}=2500. \]

Wildlife Sanctuaries protect plants and animals in their natural habitats. Therefore, this is an example of in situ conservation.

Answer:

\[ \boxed{\text{Wildlife Sanctuaries conserve the highest number of species }(2500)\text{ and represent in situ conservation.}} \]
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Question: 2

Which other methods shown in the diagram are opposite to the one identified by you in question (a) ? How are these two conservation approaches different ?

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Solution and Explanation

Opposite conservation method:

The methods opposite to in situ conservation shown in the graph are:

  • Zoological Parks
  • Botanical Gardens

These are examples of ex situ conservation.

Difference between the two approaches:

In situ ConservationEx situ Conservation
Species are conserved in their natural habitats.Species are conserved outside their natural habitats.
Examples: Wildlife Sanctuaries, National Parks and Biosphere Reserves.Examples: Zoological Parks and Botanical Gardens.

Answer:

\[ \boxed{\text{Zoological Parks and Botanical Gardens are ex situ methods, where species are conserved outside their natural habitats.}} \]

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Question: 3

Write two features of Biodiversity hotspots.

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Solution and Explanation

Two features of Biodiversity Hotspots are:

  • They contain a very large number of endemic species (species found nowhere else).
  • They are regions under severe threat due to habitat loss and therefore require priority for conservation.

Answer:

  • High level of endemism.
  • High degree of habitat loss and threat to biodiversity.
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Question: 4

To which category do sacred groves belong and how do they help in bio-conservation ?

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Solution and Explanation

Sacred groves belong to the category of in situ conservation.

They help in bio-conservation by:

  • Protecting plants and animals in their natural habitats.
  • Preserving rare, endemic and threatened species.
  • Maintaining biodiversity and ecological balance.

Answer:

\[ \boxed{\text{Sacred groves are an example of in situ conservation and help conserve biodiversity by protecting species in their natural habitats.}} \]
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