Question

Which type of respiration and reaction will take place in the germinating seeds in the experimental set-up to show CO₂ is evolved during respiration?

• A. Anaerobic respiration. Reaction is $C_6{H}_{12}{O}_6\to 6O_2+6H_{2}O+Energy$
• B. Aerobic respiration. Reaction is $C_6{H}_{12}{O}_6\to 2C_2{H}_{5}OH+2{CO}_2+Energy$
• C. Respiration in presence of oxygen
• D. Aerobic respiration. Reaction is$C_6{H}_{12}{O}_6+6O_2\to 6{CO}_2+6H_{2}O+Energy$

Answer 1

The correct option is D

Aerobic respiration. Reaction is

${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6+6{\mathrm{O}}_2\to 6{\mathrm{CO}}_2+6{\mathrm{H}}_2\mathrm{O}+\mathrm{Energy}$

The correct option is D.

Explanation for the correct answer:

1. Respiration is the process of oxidizing glucose to yield energy. It is of two types; aerobic and anaerobic respiration.
2. Aerobic respiration occurs in the presence of oxygen that breaks down glucose (${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6$) into carbon dioxide (${\mathrm{CO}}_2$) and water (${\mathrm{H}}_2\mathrm{O}$) to release energy.
3. The given reaction (${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6+6{\mathrm{O}}_2\to 6{\mathrm{CO}}_2+6{\mathrm{H}}_2\mathrm{O}+\mathrm{Energy}$) is taking place in the presence of oxygen and releasing carbon dioxide and water; thus, it is a reaction of aerobic respiration.

Explanation for the correct answer:

Option A

1. Anaerobic respiration occurs in the lack or absence of oxygen and leads to incomplete oxidation of glucose.
2. Oxygen is not released in the anaerobic respiration reaction.
3. Thus, the given reaction is not correct.

Option B

1. Ethanol (${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$) is the product of fermentation which occur in the absence of oxygen.
2. Thus, it is an anaerobic reaction.

Option C

1. Respiration occurs in the presence of oxygen is called aerobic respiration.
2. The option is incomplete as the reaction and its products are missing.

The germination of seeds shows aerobic respiration, and the reaction is ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6+6{\mathrm{O}}_2\to 6{\mathrm{CO}}_2+6{\mathrm{H}}_2\mathrm{O}+\mathrm{Energy}$