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
Related Mcqs:
- Forests means:
A. To society of American forests (SAF) is an eco-system characterized by a more or less dense and extensive tree cover
B. A plant community with predominance of trees and other woody vegetation, growing more or less closely together
C. Both (a) & (b)
D. None of these - 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 - 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 - Acclimatization means:
A. The process by which plants and animals become accustomed to unusual environmental conditions
B. That they are able to live and produce
C. Both (a) & (b)
D. None of these - Acid rain means:
A. A type of pollution which washes out of the atmosphere as dilute sulphuric and nitric acids
B. It tends to be a regional rather than a global phenomenon linked to particular industrial activities and meteorological conditions
C. Both (a) & (b)
D. None of these - 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 - Boreal forest is:
A. The large coniferous forest areas in the northern hemisphere between the latitudes of 50
B. Large areas of boreal forest are found in Scandinavia, Siberia and Northern America
C. Both (a) & (b)
D. None of these - Peat means:
A. A dense accumulation of only partially decomposed plant materials which has formed in wetlands over a period of thousand of years
B. It collects in still water which does not have enough oxygen to complete the total process of decay
C. Both (a) & (b)
D. None of these - Norman Borlaug, the American agricultural scientist and plant pathologist developed the high yield strains that greatly increased crop yields. He laid the groundwork for the green revolution and was awarded the Nobel Prize for Peace in ________
A. 1970
B. 1972
C. 1974
D. 1976 - Paleontology is:
A. The study of fossil plants and animals and of the rock formations where they are found
B. The information is used increasingly in environmental sciences to build up a picture of past environments
C. Both (a) & (b)
D. None of these
The correct answer to the question: "Biofertilizers are:" is "Both (a) & (b) ".