DENDROLOGY AND SOCIETY
PLANT CLASSIFICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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end wall which is perforated with pores
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chemical product of photosynthesis
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person or people who determined the name for a plant
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None of the above
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Detailed explanation-1: -The transverse partition wall between the two cells is perforated with the pores. The sieve tubes are the part of phloem with the perforated walls. Therefore, it appears like a sieve and it is named as a sieve plate. The sieve cells are also associated with gymnosperms because they lack in the companion cell.
Detailed explanation-2: -So, the correct answer is ‘Perforated oblique septa. ‘
Detailed explanation-3: -The perforations in sieve plates allow water and dissolved organic solutes to flow along the sieve tube. The sieve plates are lined with callose. When the sieve tube is stressed or damaged more callose is deposited, blocking the pores in the sieve plates. See also: sieve tube. Last updated on September 26th, 2022.
Detailed explanation-4: -All sieve cells have groups of pores at their ends that grow from modified and enlarged plasmodesmata, called sieve areas. The pores are reinforced by platelets of a polysaccharide called callose.