what is the use of having perforations in sieve tubes
Answers
〰️》Sieve tube, in flowering plants, elongated living cells (sieve-tube elements) of the phloem, the nuclei of which have fragmented and disappeared and the transverse end walls of which are pierced by sievelike groups of pores (sieve plates). They are the conduits of food (mostly sugar) transport.
〰️》Sieve tubes, which are columns of sieve-tube cells having perforated, sievelike areas in their lateral or end walls, provide the channels in which food substances travel.
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Answer:
They are connected to one another at their end walls, which may be inclined or transverse. The end walls also have perforations. These pores allow cytoplasmic streaming of the protoplasts in between sieve-tube elements. A set of perforations in the wall area of a sieve tube is called a sieve area.
Explanation: