HORTICULTURE

Detailed explanation-1: -Lenticels are porous tissue consisting of cells with large intercellular spaces in the periderm(outermost layers of stems and roots of woody plants). It functions as a pore and a pathway for gas exchange (respiration). It is similar to stomata but stomata usually works at day time whereas lenticels works at night.

Detailed explanation-2: -Explain reasons why stomata are found on the bottom of leaves. It might be helpful to think of the comparable structure (nose) in humans and how its openings are oriented.

Detailed explanation-3: -Lenticels permit the exchange of gases between the environment and the internal tissue spaces of the organs (stems and some fruits) (Fig. 6.2). They permit the entrance of oxygen and simultaneously the output of carbon dioxide and water vapor. In apple fruit, lenticels account for up to 21% of the transpiration.