3
Question
Gaseous exchange between air and internal tissues of old corky stem takes place through
Gaseous exchange between air and internal tissues of old corky stem takes place through
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Solution
The correct option is D Lenticels
Lenticel is a pore in the stem of a woody plant, showing a raised spot that may be filled with a powdery substance. The pore permits air to reach tissue below the surface. Stomata are present in leaves, Sieve plates are present in phloem tissue for the transport of carbohydrates and Pits are the characteristic depressions on the cell walls for the transport of water and minerals.
Lenticel is a pore in the stem of a woody plant, showing a raised spot that may be filled with a powdery substance. The pore permits air to reach tissue below the surface. Stomata are present in leaves, Sieve plates are present in phloem tissue for the transport of carbohydrates and Pits are the characteristic depressions on the cell walls for the transport of water and minerals.
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