Plants need and produce carbohydrates.
no
Plants need sunlight, water, and carbon dioxide to undergo photosynthesis and produce sugar.
glucose and sucrose
Maybe you are asking about plants not planets . .
Carbon source for sugar production.
simple: water : )
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Sugar is produced in plants by means of photosynthesis, a process that requires light. It is very logical to measure the amount of sugar in wheat plants, to see how much photosynthesis is taking place.
Energy.
So-called "vascular" plants (such as vegetables, flowering plants, and trees) have a system of cell channels known as "phloem cells" that carry sugar from the production areas (mostly leaves) to storage areas or to cells that use the sugar.
You need Co2, water and energy from the sun.
They need sunlight, water and carbon dioxide to form together, creating glucose (sugar) and oxygen as a byproduct.