Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create glucose and oxygen. It is the foundation of life on Ea
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Do all plants photosynthesize?
Most plants photosynthesize, but some parasitic plants and fungi do not because they lack chloroplasts or live in darkness. Saprophytic plants obtain energy from dead organic matter instead.
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Why are leaves green?
Leaves are green because of chlorophyll, the pigment that absorbs light energy. Chlorophyll absorbs red and blue light most strongly but reflects green light, which is why we see leaves as green.
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Can photosynthesis happen without sunlight?
No, the light-dependent reactions absolutely require sunlight. However, the Calvin Cycle can proceed briefly using stored ATP and NADPH, but eventually, it stops without light energy input.
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