DAV CLASS 8 Natural Resources : Vegetation and Wildlife Social Science Solutions

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DAV CLASS 8 Natural Resources: Vegetation and Wildlife Social Science Question and Answer

A. Tick (3) the correct option.

1. Which term is used for the plant community which grows without human interference?
   (a) plantation
   (b) natural vegetation
   (c) agriculture
   (d) gardening
2. Which vegetation grows in hot and
   humid regions of the world?
   (a) Tropical Evergreen Forests
   (b) Tropical Deciduous Forests
   (c) Mediterranean Forests
   (d) Temperate Softwood Forests
3. The most common trees of Tropical Deciduous Forests are—
   (a) Ebony and mahogany
   (b) sal and teak
   (c) cork and olive
   (d) oak and chestnut
4. Trees of Mediterranean Forests have —
   (a) broad leaves
   (b) needle shaped leaves
   (c) spiny and waxy leaves
   (d) small size leaves
5. The area under forests is depleting due to—
   (a) natural calamity
   (b) human interference
   (c) climatic change
   (d) water shortage
   Ans. 1. (b), 2. (b), 3. (b), 4. (c), 5. (b)

B. Fill in the blanks.

1. The assemblage of plant species in an environment is known as __natural vegetation____ .
2. ____Temperature____and __rainfall____are two important factors for the plant growth.
3. Humus helps to maintain ___fertility__ of the soil.
4. Hardwood trees have broad leaves to permit ___transpiration____of surplus moisture.
5. Teak is the commercially important trees of the ___monsoon_____forests.
   

C. Write a technical term or an appropriate word for each of the following statements.

1. The forests which do not shed all their leaves at the same time. —-Tropical Deciduous Forests
2. In this forest, summers are dry and moderate rainfalls in winter.—–Mediterranean Forests
3. Conical shaped trees are common in these forests.—coniferous forests or Temperate Softwood Forests
4. The act or process of creating new forests by planting saplings.—–Afforestation
5. The Temperate Softwood Forests found in the southern slopes of the Himalayas.— Mountain Forests