ARD NABARD MAINS 2020 Quiz 4 : Soil Erosion and Conservation

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1. Which of the following plants is used as windbreak?

Delonix

Mangifera

Eucalyptus

Prosopis

None of the above

2. “Chipko Movement” is related to :

Plant conservation

Project tiger

Animal breding

Operation flood

None of the above

3. In order to maintain proper ecological balance:

The existing forests should be cleared and new ones should be planted

Some quick growing anuals should be planted if a tree must be cut for other uses

Tree must be cut whenever necessary because the underground part performs the useful purpose

A tree should be planted in place of one to be cut

None of the above

4. Side effect of heavy and constant grazing is that the:

Upper layers of soil are loosened and are eroded

Lower layers are made more compact and root respiration is interfered with

Lower compact layers make root penetration difficult

All of the above

None of the above

5. Soil erosion is prevented by:

Afforestation

Deforestation

Denudation

Overgrazing

None of the above

6. Constant grazing and browsing in an area may ultimately result in the formation of:

Dense forest

Grassland

Bushy vegetation

Desert

None of the above

7. The possible beneficial effect of the grazing animals is:

Addition of their excreta to the soil

Eradication of weeds

Removal of wild plants

Removal of wild animals

None of the above

8. When young plants are grazed too heavily they get killed because:

The roots are starved

Of the mechanical injury to roots

Most of the aerial parts are eaten away

All of the above

None of the above

9. Soil erosion can be prevented by:

Allowing herbivorous animals to graze excessively

Growing plants to form a soil cover

Making the land slopy

Increasing fertility

None of the above

10. The grazing animals can change the type of vegetation by:

Bringing in plant pathogens

Selective grazing

Cross pollination

Bringing the seeds of other plants

None of the above