Question

two simmilar green plants..... ​

Answer 1

green plant that is kept in continuous light will live longer. This is because the plant that is kept in a dark is unable to conduct photosynthesis without which oxygen wont be formed however the plant kept in sunlight will release oxygen as a byproduct of the photosynthesis ...

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Answer 2

$\huge \mathfrak{hello \: mate}$

➡The plant which is kept in continuous light will live longer.

Reason:

➡Light which is essential for plants to carry out the process of photosynthesis is present.

➡By this process, plants are able to produce food (glucose) and oxygen(as a by product- necessary for respiration).

➡The plant kept in dark would be unable to survive due to lack of sufficient oxygen for respiration and light energy necessary for carrying out photosynthesis.