case /data -based (4 Marks)

Question 14 Marks

The table shows an example of the different types of threat for the Gangetic Dolphin.

Type of threat	Example of the threat
Habitat degradation	Construction of dams in rivers
Human-Dolphin conlict	Getting caught in ishing nets
Water pollution	Dumping of chemical wastes

$6.$ Surface runoffs containing pesticides also threaten the survival of the Gangetic Dolphin.
Which type of threat in the table does this belong to$?$ Explain your answer.
$7.$ The Gangetic Dolphin is a freshwater aquatic mammal.
Which of these measures will protect the Gangetic Dolphin species$?$
Circle ‘Yes’ or ‘No’ for the correct response.

Will this measure protect the Gangetic Dolphin?	Yes or No
Setting up industries near the riverbanks	Yes/No
Transporting the dolphins to seas and oceans	Yes/No
Making protected areas in certain stretches of the river	Yes/No

$8.$ How can reforestation occur without any human involvement?
$9.$ Which term is used for the species that are found only in a particular area?
$A.$ Extinct
$B.$ Endemic
$C.$ Vulnerable
$D.$ Threatened
$10.$ Why should we recycle paper$?$
$A.$ Paper is biodegradable.
$B.$ Recycled paper is stronger.
$C.$ Production of paper requires lot of wood pulp.
$D.$ Recycling of paper produces useful by-products.

Answer

$6.$ Mentions that the threat is a type of water pollution as pesticides are harmful chemicals that pollute water bodies.
For example:
Water pollution as pesticides are harmful chemicals that pollute water bodies.
$7.$No
No
Yes
$8.$ Mentions that reforestation can occur if a deforested area is left undisturbed for a long time.
$9. B.$ Endemic
$10. C.$ Production of paper requires lot of wood pulp

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Question 24 Marks

The table shows two groups of natural resources.

Wildlife Sanctuary	National Park
Protects certain speciic species of animals	Protects all plants, animals, landscape and historical objects
Restricts killing and capturing of animals	Restricts all kinds of disturbances for animals, plants and historical objects
Visitors are allowed without permission	Visitors are allowed only after authorized permission
Found in all types of terrain	Found in all types of terrain

$1.$ Radha visited a protected forest area where she can -
● can collect samples of herbs
● enter at her own will
$2.$ Which of these statements is supported by the table?
$A.$ Mining is allowed in National Parks.
$B.$ Zoo is an example of a Wildlife Sanctuary.
$C.$ National Parks are larger than Wildlife Sanctuaries.
$D.$ Wildlife Sanctuaries are always found in river basins.
$3.$ A tiger Reserve is a forest area where the tiger population is protected.
Why did Indian government declare parts of many forests as Tiger Reserves?
$A.$ Tiger is a mammal.
$B.$ Tiger is our national animal.
$C.$ Tiger is an endangered species.
$D.$ Tiger is the top predator of forest ecosystems.
$4.$ Which of these are the effects of deforestation?
Circle ‘Yes’ or ‘No’ for the correct response.

Is this an effect of deforestation?	Yes or No
Decrease in the fertility of soil	Yes/No
Decrease in the occurrence of floods	Yes/No
Increase in the occurrence of droughts	Yes/No

$5.$ Which of these books keeps a record of all the endangered animals and plants?
$A.$ Red Data Book
$B.$ Blue Data Book
$C.$ White Data Book
$D.$ Green Data Book

Answer

$1.$ Mentions that Radha visited a Wildlife Sanctuary as it has no restriction on collection of plant samples or does not require entry permission.
For example:
● Wildlife Sanctuary
● Radha did not require any permission to enter/ Radha could collect plant samples.
$2. C.$ National Parks are larger than Wildlife Sanctuaries.
$3. C.$ Tiger is an endangered species.
$4.$ Yes
No
Yes
$5. A.$ Red Data Book

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Science case /data -based (4 Marks)

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