How does the plant get the necessary reactants to make sugar

Hi Ariana! Hopefully this helps!

Explanation:

Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food. ... The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

enzyme speed up the reactions

the answer is b.) hydrogen bonds between bases.