Biology : XI-CH13 – Photosynthesis in Higher Plants – Assertion and Reason

Read the assertion and reason carefully to mark the correct option.

10 Random question from this chapter are displayed, you can take the quiz multiple times to cover all questions

1 / 10

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

Assertion: Plants utilizing the first RuBP in CO2 fixations are called C3 plants.

Reason: Plants utilizing the first PEP in CO2 fixations are called C2 plants.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

2 / 10

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

Assertion: Cyclic pathway of photosynthesis first appeared in some eubacterial species.

Reason: Oxygen started accumulating in the atmosphere after the non-cyclic pathway of photosynthesis evolved.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

3 / 10

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

Assertion: Proton produced by the splitting of water accumulate with in the lumen of thylakoid.

Reason: Spitting of water molecule takes place on inner side of the membrane of thylakoid.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

4 / 10

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

Assertion: The first CO2 fixation product was a C–organic compound.

Reason: The use of radioactive C14 in algal photosynthesis studied led to this discovery.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

5 / 10

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

Assertion: Six molecules of CO2 and twelve molecules of NADPH+ + H+ and 18 ATP are used to form one hexose molecule.

Reason: Light reaction results in the formation of ATP and NADPH2 and oxygen.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

6 / 10

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

Assertion: To make one molecule of glucose 6 turns of the Calvin cycle required

Reason: One turn of Calvin cycle fix one molecule of CO2

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

7 / 10

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

Assertion: Photorespiration is a wasteful process.

Reason: It results in CO2 release with the utilization of ATP and there is no synthesis of ATP or NADPH

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

8 / 10

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

Assertion: Current availability of CO2 in atmosphere is limiting to C4 plant.

Reason: C3 plants more efficiently fix CO2 than C4 plants.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

9 / 10

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

Assertion: Calvin cycle is referred as C3 pathway

Reason: In Calvin cycle the first product of CO2 fixation is a C3 acid (PGA).

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

10 / 10

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

Assertion: Photolysis of water occur on inner side of the membrane of thylakoid.

Reason: Water splitting complex is associated with PSII which is physically located on inner side of thylakoid Membrane.

Both (A) and (R) are true and (R) is correct explanation of the assertion

Both (A) and (R) are true and (R) is not correct explanation of the assertion

(A) is true but (R) is false

Both (A) and (R) are false

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