🌲Forestry MCQs
Forestry MCQs
498 MCQs31
When trees and shrubs are planted in long rows along streams, they are described as:
AWind breaks
BSoil binders
CShelter belts
DBasin blisters
32
Digging pits on the slopes just for the accumulation of run off is called as:
AContour terracing
BContour trenching
CBeach terracing
DNone of these
33
Terracing is done in:
ADesert areas
BHilly areas
CDry areas
DPlain areas
34
Bunds, dams and drains are constructed to prevent:
AStream bank erosion
BSheet erosion
CSlip erosion
DGully erosion
35
Over-all mineral level of soil recedes due to:
A& (
BD. Chemical reactions
CBoth (
36
Odum has described soil erosion as:
ASoil pollution
BCreeping death of soil
CLoss of living stratum
DLoss of feeding zone
37
A slopy land on account of continued rainfall initially under goes:
ARill erosion
BGully erosion
CSheet erosion
DAll of these
38
The amount of soil lost to sea each year due to rainfall is around:
A3,000 million tons
B3,000,000 million tons
C3,00,00,000 million tons
D3,00,000 billion tons
39
The chief cause of accelerated erosion is:
AExcessive rains
BWind storms
COverfelling and overgrazing
DAll of these
40
The soil erosion on slopes proceeds in the following manner:
AGully – Rill – ravine
BRill – Ravine – Gully
CRill – Gully – Ravine
DRavine – Rill – Gully