Question

The given equation indicates which of the following activities in plants?
$C_6H_{12}O_6 + 6O_2 \to 6CO_2 + 6H_2O + ATP$

A. Digestion
B. Respiration
C. Transpiration
D. None of these

Answer 1

Hint: The most abundant monosaccharide is glucose, which is a type of carbohydrate. During the process of photosynthesis, glucose is formed by plants with the help of carbon dioxide, water, and sunlight. It is chemically represented as $C_6H_{12}O_6$.

Complete answer:
The process in which cellular energy is produced through the presence of oxygen is called aerobic respiration.

According to the equation $C_6H_{12}O_6 + 6O_2 \to 6CO_2 + 6H_2O + ATP$, the energy is produced by splitting of the glucose molecule in the presence of oxygen. The end product formed by this reaction is six molecules of carbon dioxide, six molecules of water along with some energy produced as ATP (Adenosine triphosphate).

This type of respiration takes place inside the mitochondria. For the process of breaking the glucose molecule approximately 2900 kilojoules of energy gets released that forms the ATP. Aerobic respiration occurs in almost all the plants, animals and other living organisms. The oxygen gas enters the plant via stomata present on the epidermis in the leaves and stem.

Therefore, the aforesaid equation indicates respiration in plants.
Hence, the correct answer is option (B).

Note: The different steps occurring in the process of aerobic respiration are glycolysis, formation of Acetyl coenzyme A, Citric acid cycle, and the electron transport chain. After the breakdown of glucose ATP is produced in the mitochondrial matrix, the pyruvate gets converted to acetyl CoA. For each glucose molecule, the Krebs cycle occurs twice. In the inner mitochondrial matrix the electron transport chain occurs.