Answer:
Plants require sunlight for photosynthesis.
Therefore, light is an important factor that affects the distribution of
plants, e.g.,
(i) Many species of small plants (herbs
and shrubs) growing in forests are adapted to photosynthesize optimally under
very low light conditions so they will be seen distributed in shady areas under
tall, canopied trees.
(ii) Many plants in the shade
will grow vertically to gain access to light. These plants will appear to have
smaller leafs and smaller than others of the same species of the same age found
in conditions with better sunlight.
(iii) Large sized trees will be
present in areas that get abundant sunlight,
(iv) Plants dependent on
sunlight to meet their photoperiodic requirements for flowering, will try to be
distributed in area, where this requirement is being met for their reproductive
success.
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