NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM PLANTAE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The type of vascular tissue that transports sugar from source to sink is
A
xylem
B
phloem
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Food is synthesized in the green parts of a plant. The non-green parts are depended on the photosynthetic cells for nourishment. The food in the form of sucrose is transported by the vascular tissue phloem.

Detailed explanation-2: -The high turgor pressure drives movement of phloem sap by “bulk flow” from source to sink, where the sugars are rapidly removed from the phloem at the sink. Removal of the sugar increases the s, which causes water to leave the phloem and return to the xylem, decreasing p.

Detailed explanation-3: -Phloem, the vascular tissue responsible for transporting organic nutrients around the plant body, carries dissolved sugars from the leaves (their site of production) or storage sites to other parts of the plant that require nutrients.

Detailed explanation-4: -Phloem tissue is responsible for translocation, which is the transport of soluble organic substances, for example, sugar. The substances travel along sieve elements, but other types of cells are also present: the companion cells, parenchyma cells, and fibers.

Detailed explanation-5: -Sucrose, which is formed by the plant during photosynthesis, is a sugar transported through the phloem of the plant.

There is 1 question to complete.