Question

Carbon dioxide is released during photosynthesis.
A. True
B. False

Answer 1

Hint: Plants perform photosynthesis in leaves to make their own food. They require carbon dioxide, water and sunlight to perform this process. It occurs in the chloroplast. Animals take oxygen from the environment which is released from the plants.

Complete answer:

Photosynthesis is the process by which green plants turn carbon dioxide and water into food using energy from sunlight. It occurs in plant leaves. The leaves contain green pigment known as chlorophyll which absorbs sunlight. The tiny pores present in the leaves helps in gaseous exchange in the leaves. They take carbon dioxide from the outer environment and release oxygen to the environment. Oxygen is the byproduct of photosynthesis. Roots help in the absorption of water from the soil and xylem transport it to the leaves.

The photosynthesis takes place in the chloroplasts. Chloroplast is surrounded by double membranes and also contains thylakoid membranes. Photosynthesis takes place in mesophyll cells.

The reaction of photosynthesis involves carbon dioxide and water and forms carbohydrate and oxygen in the presence of sunlight. Animals take oxygen from plants for respiration and release carbon dioxide into the environment. So the overall photosynthetic equation is:

$6CO_2 + 6H_2O \to C_6H_{12}O_6+6O_2$

From the above information we have found that carbon dioxide is not released during photosynthesis. Instead of it oxygen is released.

Hence, the correct answer is option (B).

Note: All the living organisms directly or indirectly depend on photosynthesis as a source of food, energy and oxygen. It is the most popular biochemical process. All plants, algae, and even some microorganisms perform photosynthesis. During the night, plants respire and photosynthesis stops. It involves two stages: light reaction and Calvin cycle.