Question

Quantasome is a unit related to
A. Respiration
B. Ascent of sap
C. Growth
D. Photosynthesis

Answer 1

Hint: Quantasomes are particles found in the thylakoid membrane of chloroplasts. They are composed of lipids and proteins that include various pigments and redox carriers.

Complete Answer:
Let us analyse the options and find the correct answer.

Option A: Respiration is a biochemical process that occurs inside living cells. The process involves various enzymes. Respiration takes place at normal temperature. Quantasomes are not involved in respiration. Therefore, this is the incorrect option.

Option B: The upward movement of water from roots to the aerial parts of a plant is known as an ascent of sap. Plants absorb water through the roots and transpiration takes place through leaves. Hence water moves from the root to the tip portion of the plant against gravity. Xylem is involved in the ascent of sap. In the ascent of sap Quantasomes do not play a part. Therefore, this is the incorrect option.

Option C: Growth is an irreversible process. It refers to a positive change in size, often over a long period of time. It can occur as a stage of maturation or a process toward fullness. Quantasomes are involved in photosynthesis. They do not directly contribute to growth. Therefore, this is the incorrect option.

Option D: On the inner thylakoid membrane of chloroplasts Quantasomes are particles found in which photosynthesis takes place. Therefore, this is the correct option. Photosynthesis is the process by which plants make food using water, carbon dioxide and sunlight.

Therefore, the correct option is D) Photosynthesis.

Note: Quantasomes are considered to be photosynthetic units. They occur in 2 sizes. Photosystem I is represented by the smaller quantasome and the larger to represent the site of photosystem II.