Question

Carbohydrates in the plant are stored in the form of-

• A. Glycogen
• B. Starch
• C. Glucose
• D. Maltose

Answer 1

The correct option is B

Starch

The explanation for the correct answer:

(B) Plants are autotrophs which means they can prepare their own food with the help of some raw material.

The raw material used by plants are sunlight, carbon dioxide, water, and chlorophyll, and after processing, they produce glucose(${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6$), and oxygen.

The chemical reaction is as follows:

$$\begin{gathered} 6{\mathrm{CO}}_2\left(\mathrm{g}\right)+6{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\stackrel{\mathrm{Sunlight}}{\rightleftharpoons }{\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6\left(\mathrm{aq}\right)+6{\mathrm{O}}_2\left(\mathrm{g}\right) \\ \mathrm{Chlorophyll} \end{gathered}$$

After the photosynthesis, the food is formed in the form of glucose and used by the plant body in glucose form only but when the plant wants to store this glucose for a later time firstly it would convert glucose into starch and then store it in the roots, leaves, stem and other parts of the body.

In the autumn season when the leaves fall down this starch will again be converted into glucose and then used by plants.

So, the plants formed their food in the form of glucose and use this food in the form of glucose only but store in the form of starch.

The explanation for the incorrect options:

(A) Food is formed in the form of Glucose but used stored in the form of starch.

(C) Glycogen is the stored food material of animals.

(D) Maltose is another form of monosaccharide found in plants.

Therefore, option (B) is the correct answer.