49 important questions on Science for CBSE students

1001. Deforestation may reduce the chances of:

A. frequent cyclones

B. soil erosion

C. rainfall

D. landslides

1002. Earth Summit at Rio-de-Janeiro (Brazil) was related to:

A. Land survey

B. Soil fertility

C. Conservation of genetic resources of animals and plants

D. None of the above

1003. Cultigens include:

A. Domestic animals

B. Wild animals

C. Cultivated plants

D. Both (A) and (C)

1004. If environmental restoration is started right now, resolving the present man- made ecological crisis will take about:

A. 100 yrs.

B. 200 yrs.

C. 300 yrs.

D. 50 yrs.

1005. Man disturbs natural food chains by:

A. use of fossil fuel

B. family planning

C. introduction of exotic species

D. All of the above

1006. Silent valley of Kerala is being preserved because it has:

A. Rare plants and animals

B. Only natural forest of India

C. Costly timber plants

D. Recreational value

1007. The species which are in the immediate danger of extinction are called:

A. Rare species

B. Threatened species

C. Endangered species

D. All of the above

1008. The concept of critical habitats is:

A. territory of an animal

B. breeding, nursing, feeding and resting area

C. a boundary beyond which an animal will not move

D. another name for wild life sanctuary

1009. World forest day is observed on:

A. 28th February

B. 6th October

C. 21st March

D. 5th June

1010. In national parks which of the following are not allowed:

A. Forestry

B. Grazing

C. Cultivation and private ownership

D. All of the above

1011. Wildlife Protection Act was made in:

A. 1982

B. 1972

C. 1988

D. None of the above

1012. Biosphere reserve areas are:

A. 13

B. 17

C. 19

D. 25

1013. Nilgiri Biosphere Reserve Project is concerned with conservation scheme of:

A. Tamil Nadu

B. Karnataka

C. Kerala

D. All of the above

1014. Project tiger was launched in:

A. 1972

B. 1981

C. 1975

D. 1961

1015. On which date wildlife day is celebrated?

A. July 15

B. October 3

C. August 21

D. December 16

1016. Which of the following is biotic factor?

A. photoperiod

B. CO₂ content of the soil

C. porocity of the soil

D. water content of the soil

1017. Rare species are those:

A. with small populations in world

B. which are likely to become endangered

C. which are in danger of extinction

D. None of the above

1018. Deforestation causes:

A. Diseases B. Epidemics

C. Soil erosion D. Rainfall

1019. Main cause of extinction of wildlife is:

A. Air pollution

B. Water pollution

C. Industrial gases

D. Deforestation

1020. Species most vulnerable to extinction from human activities are those with:

A. low carrying capacity

B. high population growth rates

C. large niches

D. many natural predators

1021. Which of the following types of animals does man chiefly protect?

A. Feeble animals

B. Harmless animals

C. Useful animals

D. Animals likely to perish

1022. Red panda is preserved at:

A. Dachigam National Park (JK)

B. Sasan Gir National Park (Gujarat)

C. Kangchend Zong National Park (Sikkim)

D. Simlipal National Park (Orissa)

1023. “Chipko Movement” is world’s most known eco-development programme started by Sunder Lai Bahuguna (1973). It is related with:

A. Conservation of Forests

B. Afforestation

C. Planting

D. Population

1024. Which is correct for threatened (T) species?

A. It is a species to be conserved to avoid its becoming rare, endangered or vulnerable species

B. It is an endangered species like Rhino, Asiatic Lion which is in danger of extinction

C. It is a vulnerably species like musk deer, black buck which is likely to move into endangered category in near future

D. It is a rare species like wild Asiatic Ass with a small population in certain geographical areas

1025. Vulnerable (V) species are those:

A. which live in National Park

B. which are wild

C. which require conservation

D. which are likely to be in danger of extinction in near future

1026. Rare (R) species:

A. those which are in danger of extinction

B. those with small population in certain geographical areas

C. those which are found in Silent valley of Kerala

D. those which are likely to be endangered

1027. A biosphere reserve preserves:

A. Genetic resources of organisms

B. Traditional life styles of tribal’s

C. Wild population

D. All of the above

1028. Animals and plants can be best protected in:

A. Sanctuaries

B. Zoos

C. National Parks

D. Botanical gardens

1029. About what species of earth does species will be destroyed if all the tropical rain forests are destroyed?

A. 10

B. 20

C. 50

D. 90

1030. Which of the following is matching pair of sanctuary and its main protected animals?

A. North Eastern Himalayan Region- Samba

B. Sunderban-Rhino

C. Gir-Lion

D. Kaziranga-Musk Deer

1031. First National Park of India is:

A. Kanha N.P.

B. Periyar N.P.

C. Jim Corbett N.P.

D. Bandipur N.P.

1032. Identify the correct match between tiger reserve and its state:

A. Corbett – Madhya Pradesh

B. Planau – Orissa

C. Manas – Assam

D. Bandipur – Tamil Nadu

1033. A species in immediate danger of extinction is:

A. endangered

B. vulnerable

C. rare

D. None of the above

1034. When was MAB launched by UNESCO?

A. 1971

B. 1975

C. 1981

D. 1972

1035. The famous Chipko Movement was started by:

A. S.L. Bahuguna

B. Rajiv Gandhi

C. Menaka Gandhi

D. Salim Ali

1036. Whales when washed ashore will die because:

A. Their body temperature will increase

B. They cannot respire

C. Their skin will crack

D. Their bones will be crushed because of weight of body

1037. Which of the following animals has become almost extinct in India?

A. Wolf

B. Rhinoceros

C. Cheetah

D. Hippopotamus

1038. The concept of “Biosphere Reserve” was conceived by:

A. ZSI

B. BSI

C. UNESCO

D. Govt. of India

1039. The number of vertebrate species facing danger of extinction is about:

A. 10

B. 100

C. 1000

D. 10,000

1040. The ‘threatened species’ refers to the species which are:

A. Endangered

B. Rare

C. Vulnerable

D. All of the above

1041. Kaziranga wildlife sanctuary is famous for:

A. Tiger

B. Rhino

C. Elephant

D. Musk deer

1042. MAB stands for:

A. Man and Biosphere

B. Man, Antibiotic and Bacteria

C. Man and Biotic community

D. Mayer, Andersand and Bisby

1043. Had Cinchona been eliminated before its use was discovered, man would have deprived of:

A. use of its bark as dalchini

B. tejpat used as a spice

C. antimalarial drug

D. valuable timber

1044. Kanha Biosphere reserve is to be established in:

A. Uttar Pradesh

B. Madhya Pradesh

C. Meghalaya

D. Odisha

1045. Cold deserts of India occur in:

A. Rann of Kutch and Gujarat

B. Thar

C. N.E. States

D. Lahul Spiti and Ladakh

1046. In wildlife sanctuary:

A. Harvesting of trees for timber and forest products is permitted

B. Only wild fauna are protected

C. Private ownership is allowed

D. All of the above

1047. Number of Biospheres reserves in world is:

A. 143

B. 243

C. 75

D. 374

1048. Marine invertebrates are protected in:

A. Gulf of Mannar

B. Gulf of Cambay

C. Bay of Bengal

D. All of the above

1049. Which one of the following would be more appropriate in producing high yielding varieties?

A. More application of fertilizers, irrigation and use of pesticides

B. Breeding with wild varieties of organisms with genetic potentiality to respond to improved inputs

C. Development of disease resistant varieties of plants

D. Selection of wild organisms and their subsequent preservation

1050. Conservation of living resources is a complex operation and is concerned with:

A. plants and animals

B. all living organisms and non-living elements of the environment on which they depend

C. protection of wildlife and the forests in which these inhabit

D. plants, animals and microbes

Answers:

1001	1002	1003	1004	1005	1006	1007	1008	1009	1010
C	C	D	A	C	A	C	B	C	D
1011	1012	1013	1014	1015	1016	1017	1018	1019	1020
B	A	D	A	B	B	A	C	D	A
1021	1022	1023	1024	1025	1026	1027	1028	1029	1030
D	C	A	A	D	B	D	C	C	C
1031	1032	1033	1034	1035	1036	1037	1038	1039	1040
C	B	A	A	A	D	C	C	C	D
1041	1042	1043	1044	1045	1046	1047	1048	1049	1050
B	A	C	B	D	D	B	A	B	B