General Instruction:
All Questions are Compulsory.
Question No. 1 to 4 carry one mark each.
Question No. 5 and 10 carry three marks each.
Question No. 11 and 12 carry 5 marks each.
- What is virgin vegetation?
- To which vegetation does rubber belong to?
- In which state is the Simlipal Biosphere Reserve located?
- In which state is the Nanda Devi Biosphere Reserve located?
- How has the soil influence the vegetation cover of India?
- How has the land influence the vegetation cover of India?
- Why do we need to conserve the fauna?
- Why do we need to conserve the flora?
- Name three medicinal plants found in India and write one feature of each.
- Describe any five steps taken by government to conserve he flora and fauna of our country?
- Write down the features of Tropical Rain forests of India.
CBSE TEST PAPER-03
Class –IX Social Science (Natural Vegetation and Wild Life)
[ANSWERS]
1) Virgin Vegetation refers to a plant community that has grown naturally without human aid and has been left undisturbed by humans for a long time. This type of vegetation is also termed natural vegetation.
2) Tropical Evergreen Vegetation
3) Simlipal Biosphere Reserve is located in Orissa.
4) Nanda Devi Biosphere Reserve is located in Uttarakhand.
5) a) The soils varies from place to place.
b) Different types of soils provide the basis for different types of vegetation.
c) The sandy soil of the desert support cactus and thorny bushes.
d) While wet, marshy, deltaic soil support mangroves and deltaic vegetation
e) The hill slopes with some depth of soil have conical tree.
6) a) Land affects the natural vegetation directly and indirectly.
b) We cannot expect the same type of vegetation in mountainous, plateau, and plain areas or in dry and wet regions.
c) The nature of land influences the type of vegetation.
d) The fertile level is generally devoted to agriculture.
e) The undulating and rock terrains are areas where grass lands and woodlands develop and give the shelter to a variety of wildlife.
7) a) We need to conserve fauna because they make the surrounding beautiful and clean.
b) Forests are very helpful to bring rainfall and a source of oxygen.
c) We need to conserve forests to maintain our ecosystem.
d) Forests should be conserving to maintain the diversity of plants.
8) a) We need to conserve the wildlife for the maintenance and protection of many genetic diversities of wildlife.
b) We need to conserve wildlife to maintain our ecosystem.
c) We need to conserve wildlife for maintenance of food chain.
9) Three medicinal plants found in India are:-
a) Sarpagandha: It is used to treat blood pressure. It is found only in India.
b) Jamun: The juice from ripe fruit is used to prepare vinegar which is carminative(gastric) and diuretic (urinal) disorders and has digestive properties.
c) Arjun: The fresh juice of leaves is a cure for earache. It is also used to regulate blood pressure as well.
10) Steps incorporated by Indian government are
a) The government has set up fourteen biosphere reserves to protect flora and fauna. Four out of these, the Sunder bans in the West Bengal, Nanda Devi is Uttaranchal, the Gulf of Mannar in Tamil Nadu and Nilgiris have been included in the world network of Biosphere reserves.
b) The government has been providing financial and technical assistance to many Botanical gardens since 1992.
c) Many eco developmental projects have been introduced including Project Tiger, Project Rhino, project Great Indian Bustard.
d) For taking care of Natural heritage, the government has set up 89 National parks, 46 wild life sanctuaries and zoological gardens
11) a) Tropical Rain forests are restricted to torrential rainfall areas of Western Ghats and the island group of Lakshadweep and Nicobar, upper parts of Assam and Tamil Nadu.
b) These forest grow well in areas having more than 200cm of rainfall with a short dry season.
c) The trees reach great heights up to 60 meters or even above. This area has luxuriant vegetation including trees of all kinds, shrubs, and creepers giving it a multi-layered structure as the region remains warm and wet throughout the year.
d) These trees appear green all the year-round as there is no definite time for trees to shed their leaves.
e) Ebony, mahogany, rosewood, rubber, and cinchona are important commercial trees in these forests
