Tag: introduction to forests

Questions Related to introduction to forests

National Forest Policy of India has recommended (i) forest cover for the plains and (ii) for the hills.

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. (i) 33% (ii) 67%

  2. (i) 67% (ii) 33%

  3. (i) 50% (ii) 50%

  4. (i) 40% (ii) 60%

Show answer
Correct Option: A
Explanation:

National Forest Policy (1988) of India has recommended 33 percent forest cover for the plains and 67 percent for the hills.

Study the following statements regarding food chains and select the correct ones.
(i) Removal of $80\%$ tigers from an area resulted in greatly increased growth of vegetation.
(ii) Removal of most of the carnivores resulted in an increased population of deers.
(iii) The length of food chains is generally limited to $3-4$ trophic levels due to energy loss.
(iv) The length of food chains may vary from $2$ to $8$ trophic levels.

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. (i) and (ii)

  2. (ii) and (iii)

  3. (i) and (iii)

  4. (iii) and (iv)

Show answer
Correct Option: B
Explanation:

If carnivores, which feed on deer are removed, then the deer population will flourish. Removal of 80% of tigers from an area will cause an increase in the population of herbivores, which would further feed on more vegetation thus, decreasing its growth. The length of the food chain is limited to 3−4 trophic levels as only 10% of energy is transferred to the next trophic level. Hence after 3−4 trophic levels, there is very little or no energy left to sustain more trophic levels.

So, the correct answer is '(ii) and (iii)'.

The key elements that determine differences in environmental conditions of different habitats include 

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. Temperature

  2. Light

  3. Soil

  4. All of these

Show answer
Correct Option: D
Explanation:

Environment is the sum of all boo tic (living) and a biotin (non-living) factors that surround and practically influence the organism. All components are Inter-linked and inter-dependent. Biotin factors include different organism. Abiotic factors are non-living factors survival, form, function, behavior and reproduction of organism. There are many abiotic factors. The four major abiotic factors are temperature, water, light and soil. 

So, the correct answer is 'All of the above'.

A social forest tree is

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. Teak

  2. Sandal wood

  3. Subabul

  4. Rosewood

Show answer
Correct Option: C
Explanation:

This plant is nowadays being planted on a large scale under social - forestry. They used as a wind breaks, fire breaks fodder etc. 

The branchy part of a tree above the stem is known as

evs forests: our lifeline forest - the dwelling place of animals forest and its importance introduction to forests

  1. Canopy

  2. Crown

  3. Herbs

  4. None of the above

Show answer
Correct Option: B

Which of the following type of plants has reduced crown?

evs forests: our lifeline forest - the dwelling place of animals forest and its importance introduction to forests

  1. Shrubs

  2. Cactus

  3. Mango tree

  4. None of the above

Show answer
Correct Option: B

Which of the following statements about the forest is/are incorrect? 


i. Forest provides recreational opportunities.
ii. Forest helps in economic development.
iii. Forest reduces soil erosion.

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. (I) and (II) only

  2. (II) and (III) only

  3. (III) only

  4. None of these

Show answer
Correct Option: A
Explanation:
Forest is a large area dominated by trees. Many animals need forest to live and survive. They are very important to prevent soil erosion and holding water in surface of the earth. 
So the correct answer is '(I) and (II) only'.

Major consumer of wood from forest is __________

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. Thermal Power Plant

  2. Paper Industry

  3. Chemistry Industry

  4. none

Show answer
Correct Option: B

In all the forests of our state these trees are found.

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. Bamboo

  2. Addaku

  3. Tangedu

  4. Tamarind

Show answer
Correct Option: A

If forest disappear

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. The amount of ${ CO } _{ 2 }$ in air decrease

  2. The amount of ${ O } _{ 2 }$ in air will increases

  3. The amount of ${ CO } _{ 2 }$ in air increases

  4. The Amount of nitrogen in air will increase

Show answer
Correct Option: C
Explanation:

If forest disappears or the deforestation continues to exist then the amount of carbon dioxide in the atmosphere will increase. This is because the Green plants capable of fixing atmospheric carbon dioxide into Organic material such as glucose by the action of photosynthesis are no longer available. 

Thus, increasing the carbon dioxide level in the air. 
So, the correct option is 'The amount of carbon dioxide in the air increases'.