NEET BIOLOGY

Detailed explanation-1: -The lenticels found on the epidermis of different plant organs (stem, petiole, fruits) made up of parenchymatous cells are pores that always remain open, in contrast to stomata, which regulate their extent of opening. Lenticels are visible on fruit surfaces, such as mango, apple, and avocado.

Detailed explanation-2: -Lenticels permit gaseous exchange between the environment and internal tissue spaces of organs. . These tissues function as pores and are involved in promoting gaseous exchange. They help in oxygen entrance and the output of carbon dioxide and water vapor. Yes, all stems have lenticels.

Detailed explanation-3: -Lenticels are not confined to the bark of woody plants. Fruits such as apples and pears, tubers such as potatoes and storage roots such as carrots have living cells, so they require gas exchange with the environment and have lenticels.