Question

Existence of chloroplast is necessary for plant life why

Answer 1

the existence of chloroplast is very much necessary for plant life because the plant life is completely based on photosynthesis and this process requires trapping of Sunlight which can only be done in the presence of chloroplasts

Answer 2

Plants use chloroplasts for photosynthesis in order to assemble chemical energy in the form of glucose molecules. This glucose is made from reactants which are carbon dioxide and water in the presence of 1) sunlight (photons of certain wavelengths), and 2) chlorophyll. This assemblage takes place within the structure of chloroplasts. Plants are able to further process and to polymerize these glucose monomers into polymers; so, the product of photosynthesis, the glucose monomers, are assembled into longer chained polymers such as starch and cellulose. These two molecular polymers are important for use in energy storage (example potato starch) and structure (example celery stalks).

Energetically speaking, photosynthesis is the inverse process of respiration. The reactants of one are the products of the other. Both plant and cells from all other eukaryotic kingdoms derive their energy from the glucose made in chloroplasts; and, this is done through cellular level respiration in organelle structures called mitochondria. Photosynthesis is important in that it is the primary way in which the majority of producers support and provide energy to all other trophic levels, including its own, throughout the biosphere.

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