In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In light reaction of photosynthesis, light is required for the functioning of PS I and PS II, and production of NADPH and ATP.
Reason: Dark reaction does not occur in light.

If both assertion and reason are true and reason is the correct explanation of assertion.

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If both assertion and reason are true but reason is not the correct explanation of assertion.

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If assertion is true but reason is false.

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If both assertion and reason are false.

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Solution

The correct option is C If assertion is true but reason is false.

Light reactions of photosynthesis take place in the presence of light. These involve photolysis of water and production of assimilatory power (NADPH + ATP) through PS l and PS II.
Dark reactions of photosynthesis catalyse assimilation of $C O_{2}$ to carbohydrates. Dark reactions are light independent reactions, hence can take place both in the light as well as in the dark.

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Similar questions

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: The efficiency of $C_{4}$ plant is more than those of $C_{3}$ plant.
Reason : $C_{4}$ plants are more efficient in picking $C O_{2}$

Q. In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In light reaction of photosynthesis, light is required for the functioning of PS I and PS II, and production of NADPH and ATP.
Reason: Dark reaction does not occur in light.

In the following question, a statement of assertion is following by a statement of reason. Mark the correct choice as:
Assertion: CAM plants lack structural compartmentation of a leaf as found in $C_{4}$ plants.
Reason: Stomata of CAM plants are open during the day.

Q. Directions: In the following questions, a statement of assertion is followed by a statement of reason.
Mark the correct choice as:
Assertion: For acidic impurities like

S i O_{2}

present in an ore, basic fluxes are used.
Reason: Lime is a basic flux.

Read the assertion and reason carefully to mark the correct option out of the options given below :

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

Assertion: Acetic acid does not undergo haloform reaction.

Reason: Acetic acid has no alpha hydrogens.

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