_______________ and water, in the presence of light energy, are the reactants in photosynthesis. A Oxygen B Carbon dioxide C Nitrous oxide
B Carbon dioxide
The correct answer is B) Carbon dioxide.
Carbon dioxide and water, in the presence of light energy, are the reactants in photosynthesis.
The answer is B) Carbon dioxide. Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. In this process, carbon dioxide from the atmosphere, water from the soil, and light energy are converted into glucose and oxygen.
To determine the answer, it is important to understand the process of photosynthesis. In photosynthesis, plants use a green pigment called chlorophyll to capture sunlight. This energy is then used to convert carbon dioxide and water into glucose and oxygen.
When carbon dioxide enters the leaves of the plant through tiny openings called stomata, it combines with water from the roots in the presence of light energy. This process takes place in specialized structures within plant cells called chloroplasts. Inside the chloroplasts, chlorophyll absorbs the light energy and uses it to carry out a series of complex chemical reactions that ultimately produce glucose. As a byproduct of these reactions, oxygen is released into the atmosphere.
Therefore, in the process of photosynthesis, carbon dioxide is one of the reactants that combines with water and light energy to produce glucose and oxygen.