Match the column. A B (i) Gum (a) Oyster (ii) Resin (b) Bombyx (iii) Wax (c) Pinus (iv) Pearl (d) Sheep (e) Acacia

(i) Gum - (e) Acacia The gums and adhesives of industrial importance are produced from the Acacia tree. These are the vegetable origin substance, mostly obtained as exudate from the bark of trees or shrubs belonging to the family Fabaceae. (ii) Resin - (c) Pinus Resins are substances that plant cells produce in response to injury or infection in trees and shrubs. It is a useful product of gymnospermous wood-like Pinus. It may be hard or soft in nature and is used in the paint industry as an organic solvent e.g. turpentine. The resin has antibacterial properties which prevent the damaged tree from getting infected. In this same way, pine resin can also be used to heal our wounds. (iii) Wax - (b) Bombyx Bombyx mori , a lepidopteran whose caterpillar has been used in sericulture for thousands of years, feeds on the Mulberry plant and as a result, mulberry silk is formed. 90 % of the silk produced in the world is of this type. Non-sericin components consist of carbohydrates, salt, wax, flavonoids, and flavonoid derivatives and vary according to the silkworm strain. (iv) Pearl - (a) Oyster Pearls are produced from the pearl-producing oysters due to the entry of dust particles followed by the aragonite ( CaCO 3 ) , chitin and lustrin deposition around the particle. They can be produced naturally or can be generated artificially by culturing.

Match the column. A B (i) Snow leopard (a) In-situ conservation (ii) Sanctuary (b) Gavialis (iii) Rhinoceros (c) Ex-situ conservation (iv) Gharial (d) Eastern Himalayas (e) Kaziranga

(i) Snow leopard - (d) Eastern Himalayas Snow leopards live in the mountainous regions of central and southern Asia. They are primarily found in the states of Jammu & Kashmir, Himachal Pradesh, Uttarakhand, Sikkim, and Arunachal Pradesh. There are about 450 - 500 snow leopards in the Indian forests. (ii) Sanctuary - (a) In-situ conservation In-situ is the on-site conservation of genetic resources, ecosystems, and natural habitats and the maintenance and recovery of viable natural populations of plant or animal species, such as forest genetics. Examples of in-situ include sanctuaries, biosphere reserves, etc. (iii) Rhinoceros - (e) Kaziranga Rhinos are an umbrella species which means that when protecting and managing a rhino population, rangers and scientists take into account all the other species interacting with rhinos and those sharing the same habitat. The Kaziranga National Park has the highest number of Rhino ( 2401 ) in India in 2015 . Jaldapara in West Bengal has about 160 . (iv) Gharial - (b) Gavialis Gavial gangeticus is the scientific name for gharial. They are found in rivers of North India. It was considered in danger of extinction due to habitat destruction, such as incidental catches in fishing nets and poaching. National Chambal Sanctuary, also called the National Chambal Gharial Wildlife Sanctuary is situated in Madhya Pradesh.

E M B I B E

FUNDAMENTALS OF LIFE SCIENCE Class 10>Chapter 5 - Environment : Its Resources and Their Conservation>REVIEW QUESTIONS>Q 14

MEDIUM

10th West Bengal Board

IMPORTANT

Earn 100

Buxa tiger reserve is situated in Himachal Pradesh.

75% studentsanswered this correctly

Important Questions on Environment : Its Resources and Their Conservation

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10th West Bengal Board

IMPORTANT

FUNDAMENTALS OF LIFE SCIENCE Class 10>Chapter 5 - Environment : Its Resources and Their Conservation>REVIEW QUESTIONS>Q 15

Crocodylus porosus is an estuarine species.

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10th West Bengal Board

IMPORTANT

FUNDAMENTALS OF LIFE SCIENCE Class 10>Chapter 5 - Environment : Its Resources and Their Conservation>REVIEW QUESTIONS>Q 16

Gir National Park is situated at Maharashtra.

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10th West Bengal Board

IMPORTANT

FUNDAMENTALS OF LIFE SCIENCE Class 10>Chapter 5 - Environment : Its Resources and Their Conservation>REVIEW QUESTIONS>Q 1

Match the column.

A	B
(i) Gum	(a) Oyster
(ii) Resin	(b) Bombyx
(iii) Wax	(c) Pinus
(iv) Pearl	(d) Sheep
	(e) Acacia

HARD

10th West Bengal Board

IMPORTANT

FUNDAMENTALS OF LIFE SCIENCE Class 10>Chapter 5 - Environment : Its Resources and Their Conservation>REVIEW QUESTIONS>Q 2

Match the column.

A	B
(i) Snow leopard	(a) In-situ conservation
(ii) Sanctuary	(b) Gavialis
(iii) Rhinoceros	(c) Ex-situ conservation
(iv) Gharial	(d) Eastern Himalayas
	(e) Kaziranga