Collenchyma
Sieve tube
xylem vessel
sclerenchyma
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Of the four options, ๐ฆ๐ถ๐ฒ๐๐ฒ ๐๐๐ฏ๐ฒ and ๐๐ผ๐น๐น๐ฒ๐ป๐ฐ๐ต๐๐บ๐ฎ are living @ maturity..๐๐ผ๐น๐น๐ฒ๐ป๐ฐ๐ต๐๐บ๐ฎ has a thick wall due to extra deposit of cellulose...sieve tube is made up of sieve elements which are ๐ง๐ต๐ถ๐ป-๐ช๐ฎ๐น๐น๐ฒ๐ฑ and alive @ maturity although it lacks a Nucleus..having lost it so-called "๐๐ผ๐ป๐๐ฟ๐ผ๐น ๐๐ฒ๐ป๐๐ฒ๐ฟ", it activities is controlled by the adjacent ๐๐ผ๐บ๐ฝ๐ฎ๐ป๐ถ๐ผ๐ป ๐๐ฒ๐น๐น๐... They are stacked together in a longitudinal manner to form the ๐ฆ๐ถ๐ฒ๐๐ฒ ๐๐๐ฏ๐ฒ...my answer is ๐..
The correct answer is B
Collenchyma cells are elongated cells with irregularly thick cell walls that provide support and structure. Their thick cell walls are composed of the compounds cellulose and pectin so it's not the answer.
Parenchyma, a think celled wall is not given in the option so the correct answer should be B, sieve tube cos it makes up a phloem tissue which has a thin-walled living cell.
The type of cell that is thin-walled and living at maturity is the **Parenchyma**. Parenchyma cells have thin primary walls and usually remain alive after they become mature. So, the correct answer is not listed in the options you provided. However, if we consider the given options, **Collenchyma** cells are also living at maturity but they tend to develop thicker secondary cell walls. So, the closest answer from the given options would be **Option A: Collenchyma**.
Parenchyma cells have thin primary walls and usually remain alive after they become mature.
There is something confusing here, Collenchyma is a irregular wall not,thin wall tissue๐คท
Sclerenchyma is one of the three types of ground, or fundamental, tissue in plants; the other two types are parenchyma (living thin-walled tissue) and collenchyma (living support tissue with irregular walls).
A. Collenchyma
โ
Living at maturity โ Yes.
โ Thin-walled โ Not quite. Collenchyma cells have irregularly thickened cell walls, especially at the corners, to provide flexible support to growing parts of the plant (like young stems and leaves).
B. Sieve tube โ
(Correct Answer)
โ
Thin-walled โ Yes, the walls are relatively thin to allow easy flow of food substances.
โ
Living at maturity โ Yes, although they lose their nucleus, they are still alive and depend on companion cells to carry out their functions.
๐ Main function: Transport sugars and other organic nutrients through the phloem.
C. Xylem vessel
โ Dead at maturity โ These cells die when they mature, leaving behind hollow tubes for water transport.
โ Thick-walled โ Yes, heavily lignified to withstand water pressure.
D. Sclerenchyma
โ Dead at maturity โ Like xylem vessels, these cells die when mature.
โ Thick-walled โ Extremely thick and lignified cell walls for support and strength.
In summary:
Only sieve tube elements are both thin-walled and living at maturity.
They are found in the phloem, and their main job is to transport food (like sugars) throughout the plant.
Kindly note that the answer has been reviewed. Thank you all for your contributions.
