DENDROLOGY

TREE PHYSIOLOGY

PHOTOSYNTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What would happen if you tore the leaves off a plant?
A
Nothing would happen.
B
It won’t be able to make food and it will die.
C
It will fight back.
D
It won’t be able to take in water and nutrients.
Explanation: 

Detailed explanation-1: -The edges will brown – that’s the plant healing itself The plant doesn’t have the ability to repair the ripped leaf, but the remaining leaf does have value, because it can still photosynthesise. The ripped edge will go brown and look a bit, er, dead, but if the leaf is still green, the plant is still using it.

Detailed explanation-2: -In plants, if the leaves are not present there to produce food then plants can easily survive for a few days. If leaves are absent, the stored food in roots and stems helps to execute all the food requirements of that plant.

Detailed explanation-3: -If soil is deficient in nitrogen, the plant won’t be able to absorb as much as it needs and the leaves will begin to turn yellow and the plant could potentially die. As protein is a key component required for growth, a lack of nitrogen could also result in stunted growth.

Detailed explanation-4: -A stem cutting includes a piece of stem plus any attached leaves or buds. Thus, the stem cutting only needs to form new roots to be a complete, independent plant. A leaf cutting uses just the leaf, so both new roots and new stems must be formed to create a new plant.

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