STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
ANATOMY OF FLOWERING PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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occur in most woody trees
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permit exchange of gases between atmosphere and and internal tissue
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loosely arranged parenchyma cells produced from phellogen ruptures the epidermis forming lenticels
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opening and closing of the lenticels are regulated by some specialised cells
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Detailed explanation-1: -Final Answer: The given statement ‘Lenticels can open and close’ is false.
Detailed explanation-2: -Complete answer: These are used to exchange oxygen and carbon dioxide. Lenticels are present in the stem in which secondary growth has taken place. So option A is correct.
Detailed explanation-3: -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.
Detailed explanation-4: -Reason : Lenticels are specialised cells found along with stomata on the stem of woody plants.
Detailed explanation-5: -Lenticel functions as a pore. It participates in the direct exchange of gasses between the internal tissues and atmosphere through the bark, which is or else impermeable to gases.