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.
1) In which type of forests the roots of the plants are merged under water?
2) Which famous animal is found in the tidal forest?
3) Write one use of Sarpagandha.
4) In which regions the mangrove forests found?
5) Can you list out the range of animals survive in extreme cold of the Himalayan Harbour?
6) Distinguish between reforestation and Afforestation.
7) How do human beings influence the ecology of a region? Mention any three points.
8) How far it is correct to say that Rann of kachchh is one of the extraordinary sights of India? Explain.
9) What are biosphere reserves? And what are their uses.
10) Can you assess the significance of forests to enhance the quality of environment ? Justify the answer with suitable arguments.
11) Describe the factors responsible for the distribution of plants and animals in India.
CBSE TEST PAPER-01
Class –IX Social Science (Natural Vegetation and Wild Life)
[ANSWERS]
1) Mangrove Forest type of forests the roots of the plants are merged under water.
2) Royal Bengal Tiger is found in the tidal forest.
3) Sarpagandha is used to treat blood pressure.
4) Mangrove forests are found in the delta region of Ganga, the Mahanadi, and the Krishna.
5) Hardy a range of animals survive in extreme cold of the Himalayan harbour.
- The freezing high altitudes of Ladakh are a home to Yak, the shaggy horned wild ox weighing around tones.
- The Tibetan antelope, the pharal (blue sheep), wild sheep are found here.
- The kiang-the Tibetan wild ass is also found in this region.
- The ibex, bear, snow-leopard and very rare red Panda are found in certain pockets.
6) Reforestation
- It is practiced in areas where forests have been destroyed.
- Two saplings are planted to replace every fallen tree.
- It is practiced to avoid the evils of shifting agriculture.
Afforestation
- New forests are planted in the new areas.
- One sapling is planted to get one tree.
- It is practiced to bring more are under forests.
7) a) Human beings are an integral part of the ecosystem.
b) They utilize vegetation and wildlife. The greed of human beings leads to the over-utilization of these resources.
c) They create ecological imbalance like cutting of trees and killing of animals.
d) They are also responsible for the extinction of some species of plants and animals.
8) Some of the wetlands of India are popular with migratory birds, during winter. Birds, such as Siberian Crane come in large numbers. One such place favorable with birds is the Rann of Kachchh. At this place where the desert merges with the sea, flamingos with their brilliant, pink plumage, come in thousands to built nest mounds from the salty mud and raise their young ones. Due to this reason, environmentalists consider this place an extraordinary sight in the country. It is also a rich natural heritage of our country.
9) The protected areas reserved for the conservation of endangered species of flora and fauna in their natural habitat is called a biosphere reserves. Following are the uses of biosphere reserves:
a) Endangered species of animals and plants are protected.
b) These rare plants and animals are transmitted to the future generations in all their
natural glory.
c) The surrounding areas are reserved for research work for the betterment of flora and
fauna.
10) a) Forests play a significant role to enhance the quality of environment as they are
renewable resources.
b) Forests control soil erosion, modify local climate regulate stream flow, support a
variety of life, provide a livelihood for many communities and raw materials to many
industries
c) Forests offer a panoramic or scenic view of recreation.
d) It controls temperature and causes rainfall.
e) It provides humus to the soil and enhances the fertility of the soil.
f) Forests provide shelter to wildlife.
11) a) Land: The nature of land influences the type of vegetation. The fertile land is
generally devoted to agriculture. The undulating and rough terrains are the areas
where grassland and woodlands develops and give shelter to a variety of wildlife.
b) Soil: different types of soils provide basis for different types of vegetation. The sandy
soils the desert support cactus and thorny bushes while wet, marshy, deltaic soils
support mangroves and deltaic vegetation. The hill slopes with some depth of soil
have conical trees.
c) Temperature: on the slopes of the Himalayas and the hills of the peninsula above the
height of 915 meters, the fall in temperature affects the types of vegetation and its
growth and it changes it from tropical to sub-tropical temperate and alpine
vegetations.
d) Photoperiod: The variation in duration of sunlight at different places is due to
differences in latitude, altitude, season and duration of the day. Due to longer
duration of sunlight, trees grow faster in summer.
e) Precipitation: Areas of heavy rainfall have more dense vegetation as compared to
other areas of less rainfall
