Environmental Science - Study Mode
[#381] The presence of which is necessary for photosynthesis
Correct Answer
(B) Chlorophyll
Explanation
Solution: For photosynthesis, presence of carbon dioxide, water, chlorophyll and sunlight is required. Only when these elements are present, can photosynthesis occur in plant. Plants use water to help break down carbon dioxide so its components can be combined with those in water to form sugar molecules.
[#382] Lead poisoning
Correct Answer
(A) reduces O 2 carrying capacity of hemoglobin in blood
Explanation
Solution: Lead poisoning reduces O 2 carrying capacity of hemoglobin in blood.
[#383] A heat transfer process in the atmosphere that depends upon the movement of air is:
Correct Answer
(D) Convection
Explanation
Solution: Convection is the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature. Warm air is less dense than cold air, and so convection currents can form in the presence of a temperature gradient.
[#384] The method of simultaneous integration of trees with agricultural crops is called
Correct Answer
(A) Agro forestry
Explanation
Solution: Agroforestry is the integration of trees and shrubs with open-space agriculture allowing simultaneous, multi-use purposes. Agroforestry is a worldwide practice since the dawn of farming.
[#385] Utilisation of natural resources in moderate manner to remaining something for the next generation is termed as
Correct Answer
(B) Sustainable development
Explanation
Solution: Sustainable development is the organizing principle for meeting human development goals while simultaneously sustaining the ability of natural systems to provide the natural resources and ecosystem services based upon which the economy and society depend.