NEET BIOLOGY

Detailed explanation-1: -Answer and Explanation: In photosynthesis, hydrogen comes from the water molecule that is absorbed through the roots and through the leaves, and it is used in the light dependent reactions.

Detailed explanation-2: -This occurs in the step of the photosynthetic reaction where carbon dioxide combines with water. In the second stage of reactions, hydrogen is required where the plant releases oxygen as a byproduct. The hydrogen in the second stage combines with carbon dioxide for the formation of the sugar – glucose.

Detailed explanation-3: -What goes into the plant cell to start photosynthesis? The reactants of photosynthesis are carbon dioxide and water. These are the molecules necessary to begin the process.

Detailed explanation-4: -Answer and Explanation: In the end of photosynthesis, the hydrogen atoms present in water end up in the glucose molecule. Photosynthesis uses the reactants carbon dioxide and water to make the product glucose, also releasing oxygen gas as a byproduct.

Detailed explanation-5: -Water is also a product of photosynthesis. This water is produced from the oxygen atoms in the carbon dioxide molecules. The oxygen molecules released into the atmosphere come exclusively from the original water molecules, not from the carbon dioxide molecules.