Question

she found that the leaves turn yellow after a week. give a reason for such an observation? the oil prevents the ________ of gases through the leaves. therefore, the plant cannot ______ and ________.

Explanation:

Plants need gas - exchange (like intake of carbon - dioxide and release of oxygen) for photosynthesis and respiration. Oil on leaves blocks the stomata, preventing gas - exchange which affects these essential processes.

Answer:

The oil prevents the exchange of gases through the leaves. Therefore, the plant cannot photosynthesize and respire.