Answer : Option DExplaination / Solution:
Deforestation generally decreases rainfall. Plants release water in form of water vapour in the process of transpiration. The water vapour contribute in cloud formation to bring rains.
Answer : Option CExplaination / Solution:
Diversification in agriculture is key in achieving food security, improved human nutrition and increase in rural employment.
A uniformly charged thin spherical shell of radius R carries uniform surface charge density of σ per unit area. It is made of two hemispherical shells, held together by pressing them with force F(See figure). F is proportional to
Answer : Option CExplaination / Solution: Outward electric field at the surface of shell is E=σ2ε0 If Q is the charge on the shell and A is the area, than the outward pressure is P=QEA=σE=σ22∈0 Force=PX effective area of hemispherical shell=σ22∈0×πR2So F∝σ2∈0R2
Answer : Option DExplaination / Solution:
In plant cell, mitosis cell division is generally controlled by cytokinin hormone. It increase the rate of cell division leading to increased cell production. Auxinis also required for cell division in plant.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0