they need to make photosynthesise to produce 2 things 1-food for themselves and 2- to produce oxygen (they take in carbon dioxide and give out oxygen )
Plants depend on solar radiation (light) to synthesise their energy.
Plants get the water they require for photosynthesis by absorbing from the soil through their root systems. It is then transported up the stem and to the leaves where is is used to synthesise sugars through photosynthesis.
hyfj Edited answer: Through biochemical reactions under the guidance of genetic information of that cell.
Humans are unable to synthesise or store ascorbic acid (vitamin C) so they need a constant supply in the diet. Some other animals can synthesise it, so they don't need to eat it. Aside from humans and their close relatives, guinea pigs, bats and capybaras can't synthesise it.
Heterotrophic organisms cannot synthesise their own food.They are dependent on autotrophic organisms(i.e. plants)for their food
it is the main component of proteins and nucleic acids. hence for a plant to synthesise proteins and nucleic acids, N is required
to convert mRNAs into proteins
plants
Plants need light to photosynthesize. Photo-Light They use the light for their only energy source. The exceptions being carnivorous plants such as Bladderworts and the always-known Venus Fly Traps.
Plants convert Solar Energy to Chemical Energy by the process of Photosynthesis. By then the synthesise glucose for their own use as energy and store them in different forms in their different parts.
By photo synthesis