– Kumudinee, Subject Matter Expert at Edumarz
Solution- Green plants being autotrophic organisms, in the presence of sunlight synthesize nutrients (food) from carbon dioxide and water by using chlorophyll (a green pigment), and the process or phenomenon is called photosynthesis. Plants take all the raw materials required in the process of photosynthesis from the surrounding environment which are naturally available.
Raw materials required for photosynthesis
Carbon dioxide– leaves of plants have small pores called stomata. These stomatal openings allow exchange of gases and water vapours between plant and environment. Plants absorb carbon dioxide from the atmosphere through stomata.
Water- a certain amount of water is present in soil and called groundwater and it is absorbed from soil with the help of roots and then gets transported to the leaves. The main primary function of the root system is to absorb groundwater.
Sunlight– it is freely available in the environment during day time so leaves and other pigmented parts of the plant can absorb sunlight with help of various photosynthetic pigments like chlorophylls, carotenoids and xanthophylls absorb sunlight.