Forest-our lifeline Worksheet-5

Forest-our lifeline Worksheet-5

Multiple-Choice Questions:

11. A negative impact of the use of modern technology is that:

(a) economic opportunities are frequently limited

(b) international trade is limited

(c) contacts with other cultures decrease

(d) levels of air and water pollution often increase

12. The relatively thin layer on the earth's surface where life is possible is known as the:

(a) Biome             (b) Ecosystem     (c) Biopreserve    (d) Biosphere

13. Conditions that make life possible on earth include:

(a) A steady supply of light and heat from the sun

(b) Water, which is essential for living cells and also provides a moderate climate

(c)  A suitable range of temperatures

(d) All of these

14. A characteristic of temperate deciduous forest is:

(a) That the rainfall is low

(b) That the trees shed their leaves and become dormant during the winter

(c) That the forest floor has very little litter to serve as habitat for animals

(d) The presence of such trees as pine, fir, spruce, and cedar

15. A characteristic of a tropical forest is that:

(a) The animals such as deer, moose, and elk are common

(b) The soil rapidly deteriorates when the forest is removed

(c) The growing season is short

(d) There is much vegetation but relatively few species of plants and animals are present

16. Tundra is:

(a) Composed of very little plant life and no animal life

(b) A mixed forest composed of evergreen and deciduous tees

(c) An area of high precipitation and high humidity

(d) The treeless Arctic regions and high mountain tops

17. Why are deserts unique?

(a) They only occur in regions with dry winters and dry summers.

(b) They only occur in subtropical or tropical regions.

(c) They are the only biome with small animals.

(d) They are the only biome with drought adapted vegetation.

True/False:

1. The forest keeps on growing and changing, and can regenerate.
2. Forests play no role in protecting the soil from erosion.
3. Forests are the lifeline for the forest-dwelling communities and they influence climate, water cycle and air quality.
4. In the forest, there is an interaction between air and living organisms only.
5. Climate, topography, and soil type cannot determine the type of trees and animals that live in a forest.
6. Forests help to maintain the levels of all the gases in the air except the oxygen.
7. Plants and animals form a food chain and a food web.

Fill in the Blanks:

1. The layer where trees branch off from the tree trunk is called _____.
2. The shaded layer of the forest where low light is available is called ______.

Answer key:

11. (D)
12. (D)
13. (D)
14. (B)
15. (B)
16. (D)
17. (A)

True/False:

1. T
2. F
3. T
4. F
5. F
6. T
7. T

Fill in the Blanks:

1. Crown
2. Understorey / understory