Tag: evs

Questions Related to evs

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

  1. Temperature

  2. Light

  3. Soil

  4. All of these


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

  1. Teak

  2. Sandal wood

  3. Subabul

  4. Rosewood


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

  1. Canopy

  2. Crown

  3. Herbs

  4. None of the above


Correct Option: B

Which of the following type of plants has reduced crown?

  1. Shrubs

  2. Cactus

  3. Mango tree

  4. None of the above


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.

  1. (I) and (II) only

  2. (II) and (III) only

  3. (III) only

  4. None of these


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 __________

  1. Thermal Power Plant

  2. Paper Industry

  3. Chemistry Industry

  4. none


Correct Option: B

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

  1. Bamboo

  2. Addaku

  3. Tangedu

  4. Tamarind


Correct Option: A

If forest disappear

  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


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'.

Which of the following are green lungs?

  1. Green coloured lungs

  2. Lungs with green alga

  3. Lungs in Green coloured animals

  4. Forests


Correct Option: D
Explanation:

Forest is called as the green lung because they fix the carbon dioxide in the presence of sunlight and convert them into glucose by the process of photosynthesis. The reaction of carbon dioxide with water during this process releases oxygen as byproduct and glucose is formed. Thus forest replenishes oxygen in turn of carbon dioxide. Thus, the correct answer is option D.

What is Canopy?

  1. Uppermost level of the forest

  2. Ground level of the forest

  3. Soil in forest

  4. Climbers on trees


Correct Option: A