Plant Physiology (Botany) (Part-II)

Total Questions: 33

21. Xylem helps in the transport of which of the following? [S.S.C. Online Graduate Level (T-I) 8.08.2017 (Shift-I)]

Correct Answer: (e) Both b & C
Solution:Both b & C -
Xylem is primarily responsible for the transport of water and dissolved nutrients (minerals) from the roots to the rest of the plant.

22. Which of the following is associated with the transport of water in plants? [S.S.C. Online MTS (T-I) 18.09.2017 (Shift-III)]

Correct Answer: (b) Xylem
Solution:Plants have tissues to transport water, nutrients, and minerals. For example, the xylem carries water and minerals from the roots to other parts of the plant, while the phloem transports the food substances (sucrose and amino acids) made in the leaves by the tissue to other parts of the plant.

23. _____ performs the function of water transport in plants. [S.S.C. Online Constable GD 12.02.2019 (Shift-II)]

Correct Answer: (c) xylem
Solution:Plants have tissues to transport water, nutrients, and minerals. For example, the xylem carries water and minerals from the roots to other parts of the plant, while the phloem transports the food substances (sucrose and amino acids) made in the leaves by the tissue to other parts of the plant.

24. Plants get their energy to produce food from which of the following? [S.S.C. Online CHSL (T-I) 22.01.2017 (Shift-I)]

Correct Answer: (d) Sun
Solution:Plants use sunlight energy to make food. Then, plants convert this energy into chemical energy (A.T.P.) and, with the help of it, reduce CO₂ to glucose.

25. During photosynthesis, light energy is converted into? [S.S.C. Online Stenographer 14.09.2017 (Shift-II)]

Correct Answer: (b) chemical energy
Solution:Chemical energy -
During photosynthesis, light energy is captured by chlorophyll and converted into chemical energy, which is stored in the bonds of glucose molecules.

26. The _____ is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules. [S.S.C. Online MTS (T-I) 14.10.2021 (Shift-II)]

Correct Answer: (d) Calvin cycle
Solution:Calvin cycle -
The Calvin cycle (also known as the light-independent reactions or dark reactions) uses the ATP and NADPH produced in the light-dependent reactions to fix carbon dioxide and form glucose and other carbohydrate molecules.

27. Where do plants synthesize protein from? [S.S.C. Online CHSL (T-I) 21.01.2017 (Shift-III)]

Correct Answer: (c) Amino Acids
Solution:Amino Acids -
Plants synthesize proteins from amino acids. They can produce some amino acids themselves and absorb others from the soil in the form of nitrates, which are then converted into amino acids.

28. What is the movement of a plant due to the stimulus of light known as? [S.S.C. Online Constable GD 19.02.2019 (Shift-I)]

Correct Answer: (d) Phototropism
Solution:Phototropism -
Phototropism is the growth of a plant towards or away from a light stimulus. The "photo-" prefix refers to light, and "-tropism" refers to a directional growth response.

29. Magnesium is a constituent metal of ______ . [S.S.C. Online Graduate Level (T-I) 1.09.2016 (Shift-I)]

Correct Answer: (a) Chlorophyll molecule
Solution: Chlorophyll molecule -
Magnesium is a central atom in the chlorophyll molecule and is essential for its function in capturing light energy during photosynthesis.

30. The balance of CO₂ and O₂ in the atmosphere is due to ______ . [S.S.C. Online MTS (T-I) 4.10.2017 (Shift-I)]

Correct Answer: (b) Photosynthesis
Solution:Photosynthesis -
Photosynthesis removes carbon dioxide from the atmosphere and releases oxygen, while respiration does the opposite. The balance of these two processes is crucial for maintaining the levels of CO₂ and O₂ in the atmosphere.