Question

Sieve tubes are best suited for translocation of
solute because -
(1) They are much broader than long
>
(2) They possess no end wall
(3) They have higher number of pits
(4) They possess interconnected lumen​

Answer 1

2

Explanation:

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Answer 2

The phloem is composed of sieve tubes, companion cells, phloem parenchyma and fibres. The sieve tubes are the tube-like cells without the nucleus. These cells have lignified cell wall, broad lumen and perforated walls for the conduction of food. The companion cells are adjacent cells of sieve tube which control the function of sieve cells.

Thus, the correct answer is option D.

posses a broader lumen and perforated cross walls