Question

Photosynthesis can take place in the absence of
A. Light
B. Glucose
C. Chlorophyll
D. Water
E. Carbon dioxide

Answer 1

Photosynthesis is the fixation of atmospheric carbon dioxide into natural compounds; it makes use of water as an electron donor and results in the production of oxygen. The first segment of photosynthesis (light reaction) consists of trapping sunlight by means of chlorophyll and different pigments to drive the splitting of water. The light energy can be released to fuel the organism's metabolic activities through cellular respiration.

Complete explanation:
Option A: The dark reaction can show up in absence of light however is established upon the end product of the light reaction. So, photosynthesis will no longer take place in the absence of light.
Hence, A is incorrect.
Option B: Photosynthesis is the process through which plants and some protistans use the energy to produce glucose from the sunlight. This glucose can be transformed into pyruvate which releases adenosine triphosphate (ATP) by way of cellular respiration. Oxygen is also formed. In the presence of Sunlight, photosynthesis takes place where the plants produce glucose and oxygen from carbon dioxide and water. It takes place only in the components of plants where chlorophyll is present.
Hence, B is the correct answer.
Option C: Chlorophyll is a green pigment current in the chloroplasts which helps in trapping the light power and without which photosynthesis will in no way occur in green plants. In the absence of 'chlorophyll,' the photosynthesis will no longer take place on the leaves.
Hence, C is incorrect.
Option D: Plants require water to make their food to complete the process of photosynthesis as plants take in carbon dioxide $\left( {C{O_2}} \right)$ and water $\left( {{H_2}O} \right)$ from the air and soil.
Hence, D is incorrect.
Option E: Photosynthesis can only happen when the plants get enough food as they extract the carbon dioxide from the air and use it in the photosynthesis process to feed themselves. Then they use it to convert this solar energy into energy-rich organic molecules.
Hence, E is incorrect.

Hence, Option B is the correct answer.

Note:
Photosynthesis can't take place in plants all through the night due to the fact of absence of carbon dioxide, sunlight, chlorophyll, water, etc. however it can take place in absence of Glucose. Photosynthesis is used by plants to convert light energy into chemical energy. Hence, photosynthesis needs light, water, carbon dioxide, and chlorophyll. Glucose is the product of mild independent reactions.