Lenticels are the small openings present on woody stems . (T/F)
Answers
Answer:
True
Explanation:
The bark of the woody stem is a product of secondary growth in plants. Plants require gases like carbon dioxide and oxygen for their life processes. For gaseous exchange apart from stomata in the leaves gaps are formed in woody stems during development. Such openings are called as lenticels.
Answer:
true
Explanation:
In plants, various life processes occur like photosynthesis and respiration. During these processes, various gases like carbon dioxide and oxygen are required. Also, these gases are released as waste products in the plants. Now, these waste products or waste gases need to be expelled out of the plant body to inhibit any toxic effect.In softer plants, the gaseous exchange occurs through stomata. Stomata are pores or openings present generally over the surface of leaves and stems. These are specialized cells guarded by guard cells that assist their opening and closing. In woody stems, the stomata cannot perform gaseous exchange as secondary growth occurs. The woody appearance is due to modifications of xylem and phloem. Thus a woody stem requires specialized cells for gaseous exchange. These cells are lens-shaped or have a lenticular appearance. These are large cells having intercellular spaces and are called lenticels. The lenticels make a porous tissue on the bark of the plant and help in the gaseous exchange of carbon dioxide and oxygen. Epiblema is a moth species that has no role in plant gaseous exchange.