A. Primary carnivore and trophic level II
B. Secondary consumers and herbivores
C. Primary consumers and herbivores
D. Trophic level I and herbivores
Ecology and General Silviculture
Ecology and General Silviculture
A. Fe
B. P
C. Mg
D. Ca
A. Oxygen and nitrogen
B. Phosphorus and Sulphur
C. Phosphorus and CO2
D. Phosphorus and nitrogen
A. 25%
B. 50%
C. 10%
D. 5%
A. The predator develops a preference to other diets and may itself become a pest
B. They do not always survive when transferred to a new environment
C. The method is less effective as compared to the use of insecticides
D. The practical difficulty in introducing the predator to specific area
A. Place of occurrence
B. Competitive ability
C. Centre of origin
D. Function at its place of occurrence
A. 1%
B. 2%
C. 10%
D. 20%
A. Biological nitrogen fixation
B. Electrification of nitrogen
C. Industries
D. All the above
A. Herbivores will not receive solar energy
B. Rate of decomposition of other component will be very high
C. Mineral movement will be blocked
D. Energy flow will be blocked
A. Lime rocks contribute to CO2 of water
B. Atmospheric CO2 gets dissolved in water
C. CO2 is returned by combustion of fuel
D. 75% of total carbon lies in geological component