The source of oxygen in photosynthesis is...? Mcqs

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The source of oxygen in photosynthesis is...?

(A) water
(B) salts

(C) minerals
(D) glucose

✅ Correct Answer: water

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Source: This question is taken from the Everyday Science

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Which one of the following wavelengths of light is most effective in photosynthesis...?

(A) Blue
(B) Green

(C) Orange
(D) Yellow

✅ Correct Answer: Blue

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Source: This question is taken from the Everyday Science

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In which part of the Plant does photosynthesis take place...?

(A) Flowers
(B) Roots

(C) Stem
(D) Leaves

✅ Correct Answer: Leaves

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Source: This question is taken from the Everyday Science

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During the daytime for the photosynthesis, plants require ______...?

(A) O2
(B) N2

(C) CO2
(D) H2

✅ Correct Answer: CO2

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Source: This question is taken from the Everyday Science

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The process of photosynthesis produces glucose and ______...?

(A) Carbon dioxide
(B) Oxygen

(C) Water
(D) Carbo monoxide

✅ Correct Answer: Carbon dioxide

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Source: This question is taken from the Everyday Science

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Fundamental molecule produced during photosynthesis is ______...?

(A) Glucose
(B) Amino acid

(C) Fatty acid
(D) Nucleotide

✅ Correct Answer: Glucose

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Source: This question is taken from the Everyday Science

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In night, when photosynthesis is stopped, plants__________...?

(A) take in Carbon Dioxide
(B) give off Oxygen

(C) give off Carbon Dioxide
(D) None of these

✅ Correct Answer: give off Carbon Dioxide

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Source: This question is taken from the Everyday Science

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Recognize the factor which does not affect the process of photosynthesis...?

(A) O2
(B) CO2

(C) H20
(D) Light

✅ Correct Answer: O2

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Source: This question is taken from the Everyday Science

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Which of the following gases do plants and trees give out during photosynthesis...?

(A) Hydrogen
(B) Nitrogen

(C) Oxygen
(D) Carbon dioxide

✅ Correct Answer: Oxygen

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Source: This question is taken from the Everyday Science

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The materials required for photosynthesis are _______...?

(A) Water (H2O) and Oxygen (O2)
(B) Water (H2O) and Carbon Dioxide (CO2)

(C) Carbon Dioxide (CO2) and Light Energy
(D) Glucose (C6H12O6) and Oxygen (O2)

✅ Correct Answer: Carbon Dioxide (CO2) and Light Energy

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Source: This question is taken from the Everyday Science

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Which gas is used to extract energy from food in photosynthesis...?

(A) O2 (Oxygen)
(B) CO2 (Carbon Dioxide)

(C) H2O (Water)
(D) N2 (Nitrogen)

✅ Correct Answer: CO2 (Carbon Dioxide)

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Source: This question is taken from the Everyday Science

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During a total solar eclipse the rate of Photosynthesis___________...?

(A) Increase
(B) Decrease

(C) Remain Constant
(D) None of them

✅ Correct Answer: Decrease

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Source: This question is taken from the Everyday Science

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