76
Which of the following is energy crop?
Answer
D. All of these
77
Mychorrhizal infections in forest trees is an example of
Answer
B. Symbiosis
78
'Biomining' uses
Answer
C. Both (A) and (B)
79
Phytoremediation uses capabilities of
Answer
B. Plants
80
A fresh water fern used as biofertilizer is
Answer
A. Azola
81
Which of the following entity is not included in fire triangle?
Answer
D. Flamability
82
Liming is done for the reclamation of
Answer
C. Acid soil
83
Which of the following factor is considered when land is assigned for human settlement?
Answer
D. All of these
84
Land classified as capability class-III (e) has
Answer
A. Erosion risk
85
Exchangeable sodium percentage is more than 15%, in case of
Answer
C. Saline alkali soil
86
The origin of βt gene in βt-cotton is
Answer
B. Bacteria
87
Primary essential nutrient elements for plants are
Answer
A. N, P, K
88
Application of plant cell and tissue culture in forest management is
Answer
D. All of these
89
Which of the following is a persistent pesticide?
Answer
C. Chlorinated hydrocarbons
90
The effect of acid rain on ecosystem depends on
Answer
D. All of these
91
Tilling and planting at right angle to the slope of the land is called
Answer
B. Contour cultivation
92
Significance of biogeochemical cycle is
Answer
A. Resource utilization
93
Clean up of the contaminated sites, with the help of natural and genetically modified micro-organisms is called
Answer
B. Bioremediation
94
In a closed system growth of microbes is self limiting. Because
Answer
D. Both (A) and (B)
95
Electrical energy is an example of
Answer
B. High quality energy
96
India is most affected by
Answer
A. Flood
97
Irrigation water quality is determined by the contents of
Answer
D. All of these
98
Which of the following is a cause of desertification?
Answer
D. All of these
99
Nuclear power reactor is a device that
Answer
A. Permits controlled nuclear fission reaction
100
The impact of dam construction is
Answer
C. Both (A) and (B)
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