EVERYDAY SCIENCE

SCIENCE

BOTANY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Choose xylem, phloem or both for being able to transport food made in the leaves to all parts of the plant.
A
xylem
B
phloem
C
both
D
None of the above
Explanation: 

Detailed explanation-1: -The two primary vascular tissues are xylem, which transports water and dissolved minerals from the roots to the leaves, and phloem, which conducts food from the leaves to all parts of the plant.

Detailed explanation-2: -The xylem distributes water and dissolved minerals upward through the plant, from the roots to the leaves. The phloem carries food downward from the leaves to the roots. Xylem cells constitute the major part of a mature woody stem or root.

Detailed explanation-3: -The vascular tissue, phloem helps in the transportation of the synthesized food from the leaves to various storage organs. Phloem is a complex permanent tissue that is present in all vascular plants. Phloem consists of various elements-phloem parenchyma, phloem fibers, companion cells, and sieve tubes.

Detailed explanation-4: -Phloem parenchyma cells, called transfer cells and border parenchyma cells, are located near the finest branches and terminations of sieve tubes in leaf veinlets, where they also function in the transport of foods.

Detailed explanation-5: -This vascular bundle works as two-way traffic as it allows the movement of substances upwards and downwards. Hence, Veins of leaves have both xylem and phloem.

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