CBSE Notes, Lectures

CBSE - Biology - Life Processes

Life Processes

Short Answer Type

Two green plants are kept separately in oxygen free containers, one in the dark and the other in continuous light. Which one will live longer? Give reasons.

The plant which is kept in continuous light live longer. We know that plant release carbon dioxide during respiration. In case of plant which is being kept in dark, carbon dioxide will accumulate in the container. This will finally result in lack of oxygen for the plant and plant would die. In case of plant which is being kept in light, carbon dioxide shall be utilized during photosynthesis. This will help in maintaining the availability of oxygen for respiration. As a result, this plant will live longer.

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