Biosphere means:
A.The part of the earth that supports life and consists of the soil, oceans
B.The waterways and the atmosphere upto 15 km above the earth’s surface
C.Waterways and the
D.None of these
Category: Associated Concepts in Forestry Mcqs
Green manuring plants are:
A.Egyptian clover (barseem)Trifolium alexandrnum
B.Dhaincha (jayannti) Sesbania aculeata
C.Cowpea (lobia) Vigna sinensis
D.All of the above
Biofertilizers are:
A.Fertilizer: Manure: any substance applied to soil fertility and increase plant growth and yield, these may be organic in organic or of bio-origin
B.Organic fertilizers: prepared from plant residues (cotton seedcake, groundnut cake etc.)
C.Both (a) & (b)
D.None of these
Silviculture means:
A.Methods of raising tree crops and their growth and care upto the time of the final harvesting
B.Silviculture is the science and art of cultivating forest crops, based on knowledge of silvics
C.Both (a) & (b)
D.None of these
Transboundary pollution is:
A.Trnsboundary pollution describes polluted air and water or any other contaminated waste that is generated in ove country and transmitted to other
B.The most pervasive pollutant is sulphur dioxide a by-product of the burning of fossil fuels in power stations
C.Both (a) & (b)
D.None of these
Inorganic of mineral origin are:
A.Inorganic fertilizers
B.Bio-origin fertilizers
C.Green manuring
D.All of the above
C3 plants means:
A.A group of plants including the soya bean wheat and cotton.
B.The process of carbon fixation during photosynthesis
C.The prod use a compound essential for growth that consists of molecules each containing three atoms of carbon
D.All of the above
What is Pollution?
A.An undesirable change in physical, chemical or biological characteristics of air, water or land that may
B.Will harmfully affect human life, directly or indirectly
C.Both (a) & (b)
D.None of these
Ozone layer having:
A.The protective layer of ozone in the upper stratosphere, found at a level between 15 and 150 km above
B.The Earth which prevents harmful ultraviolet B radiation which causes skin cancer and threatens plant life from reaching the ground
C.Both (a) & (b)
D.None of these
What is Pollutants:
A.Agents that pollute; these may be gaseous (vapours) or particulate (solid and liquid particles)
B.On the basis of the amount and their relative harmfulness or toxicity
C.Both (a) & (b)
D.None of these
