HORTICULTURE

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HORTICULTURE SCIENCE

PLANT BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If some of the xylem of a young oak tree were destroyed, it would most likely interfere with the tree’s ability to
A
absorb sunlight.
B
conduct water to the leaves.
C
absorb nutrients from the soil.
D
conduct sugars to the roots.
Explanation: 

Detailed explanation-1: -Xylem is the vascular vessel which transports water from the roots to the leaves where it is used for the process of photosynthesis. In the absence of xylem, water will not reach the leaves and thus, photosynthesis won’t take place for it needs 6 H2O.As a result the plant wilts and dies.

Detailed explanation-2: -If the phloem is eliminated, there will be no transfer of chemicals and plants will not receive the necessary nutrients to carry out their processes. The plant will first wilt and then die.

Detailed explanation-3: -What causes water to fill the xylem pipeline completely, from the roots to the leaves, and to resist any separation? Transpiration creates a pushing effect, which forces a column of water up from the roots to the leaves.

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