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: C4 photosynthetic pathway is more efficient than the C3 pathway.

Reason: Photorespiration is suppressed in 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

2 / 10

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

Assertion: CAM plants lack structural compartmentation of leaf, as found in C4 plants.

Reason: Stomata of CAM plants are open during the night.

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: Oxidative phosphorylation requires oxygen.

Reason: Oxidative photophosphorylation occurs in chloroplast.

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: There is a decrease in photosynthesis, if the photosynthetic cells are illuminated by light of P680 nm or more wavelength.

Reason: In red drop phenomenon the rate of photosynthesis decreases.

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: Accessory pigment helps to make photosynthesis more efficient.

Reason: Accessory pigment helps to absorb different wavelengths of light.

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: 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

7 / 10

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

Assertion: The stromal thylakoids are rich in both PS I and PS II.

Reason: The granal membranes are rich in ATP synthetase.

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: 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

9 / 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

10 / 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

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