Active uptake of minerals by roots mainly depends on the

Options

A. Availability of oxygen
B. Light
C. Temperature
D. Availability of carbon dioxide

Answer

A

Explanation

Evidence in favour of active mineral absorption are: * Rate of respiration of plant is increased when plant transferred into mineral solution (salt respiration). * A deficiency of `O_2` causes a corresponding decreases in the rate of mineral absorption. It is due to the unavailability of ATP. The increased oxygen tension helps in increased uptake of salt.