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NEET • BIOLOGY • PHOTOSYNTHESIS IN HIGHER PLANTS

Photosynthesis in higher plants practice · Easy

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31 Easy

31 of 55

Remembering +4 | -1

Photosynthetic pigments in chloroplast are embedded in the membrane of

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Correct option: C

Thylakoid

Option C (Thylakoid) is correct because photosynthetic pigments are embedded in the thylakoid membranes within the chloroplast.

32 Easy

32 of 55

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In higher plants, the shape of the chloroplast is

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Correct option: A

Discoid

Option A (Discoid) is correct because the typical shape of chloroplasts in higher plants is discoid or lens-shaped.

33 Easy

33 of 55

Understanding +4 | -1

In grana of chloroplast, the reaction

ADP + {P_i} = ATP

during day shows

View answer and explanation

Correct option: B

Photophosphorylation

Option B (Photophosphorylation) is correct because the reaction

ADP + {P_i} = ATP

in the presence of light is specifically called photophosphorylation.

34 Easy

34 of 55

Remembering +4 | -1

The enzyme responsible for primary carboxylation in

{C_3} -

plants is

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Correct option: D

RuBP carboxylase oxygenase

Option D (RuBP carboxylase oxygenase) is correct because RuBisCO is the enzyme responsible for the primary carboxylation in C3 plants.

35 Easy

35 of 55

Understanding +4 | -1

Which of the given processes is not common between

\mathrm{C}_3

and

\mathrm{C}_4

plants?

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Correct option: D

Photorespiration

Option D (Photorespiration) is correct because photorespiration is significantly reduced or absent in C4 plants compared to C3 plants.

36 Easy

36 of 55

Remembering +4 | -1

Phenomenon which converts light energy into chemical energy is

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Correct option: B

Photosynthesis

Option B (Photosynthesis) is correct because photosynthesis is the process that converts light energy into chemical energy in plants.

37 Easy

37 of 55

Understanding +4 | -1

In an experiment, a leaf was partially covered with black paper, and other one was exposed to light. On testing these leaves for starch, in the presence of sunlight, on may conclude that photosynthesis had occurred in

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Correct option: A

Green part of leaves

Option A (Green part of leaves) is correct because photosynthesis occurs in the presence of light and chlorophyll, which are found in the green parts of leaves.

38 Easy

38 of 55

Understanding +4 | -1

Stroma lamellae membrane lacks
I. PS-II
II. NADP reductase
III. non-cyclic photophosphorylation
Select the correct option

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Correct option: D

I, II and III

Option D (I, II and III) is correct because stroma lamellae lack PS-II, NADP reductase, and do not perform non-cyclic photophosphorylation.

39 Easy

39 of 55

Remembering +4 | -1

A wastage process is

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Correct option: C

Photorespiration

Option C (Photorespiration) is correct because photorespiration is a wasteful process that reduces photosynthetic efficiency.

40 Easy

40 of 55

Understanding +4 | -1

I. Initial

C{O_2}

acceptor
II. Extent of photorespiration
III. Enzyme catalysing reaction that fixes

C{O_2}

IV. Presence of Calvin cycle
V. Leaf anatomy
Which one does not differ in a

{C_3}

and

{C_4} -

plants?

View answer and explanation

Correct option: B

Only IV

Option B (Only IV) is correct because both C3 and C4 plants utilize the Calvin cycle for the final stage of carbohydrate synthesis.

41 Easy

41 of 55

Understanding +4 | -1

Absorption spectrum of chlorophyll-a and the action spectrum of photosynthesis is identical because chlorophyll-a

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Correct option: C

Absorbs the red and blue light

Option C (Absorbs the red and blue light) is correct because chlorophyll-a absorbs red and blue light, which are the primary wavelengths used in photosynthesis.

42 Easy

42 of 55

Remembering +4 | -1

Plastocyanin contains

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Correct option: A

Copper

Option A (Copper) is correct because plastocyanin is a copper-containing protein that functions as an electron carrier in the photosynthetic electron transport chain.

43 Easy

43 of 55

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Cyclic photophosphorylation results only in the

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Correct option: A

Formation of ATP

Option A (Formation of ATP) is correct because cyclic photophosphorylation involves only PS-I and results solely in the production of ATP.

44 Easy

44 of 55

Remembering +4 | -1

The special structure present in

{C_4} -

plants in

View answer and explanation

Correct option: C

Kranz type body

Option C (Kranz type body) is correct because C4 plants possess a specialized leaf anatomy called Kranz anatomy, which is essential for their carbon fixation pathway.

45 Easy

45 of 55

Understanding +4 | -1

I. Temperature
II.

C{O_2}

concentration
III. Chlorophyll arrangement
IV. Water
Among the given factors, identify the external factors that affects the rate of photosynthesis and correct option accordingly

View answer and explanation

Correct option: A

I, II and IV

Option A (I, II and IV) is correct because temperature, carbon dioxide concentration, and water availability are all external environmental factors that directly influence the rate of photosynthesis.

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46 Easy

46 of 55

Remembering +4 | -1

Kranz Anatomy is one of the characteristics of the leaves of

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Correct option: A

Sugarcane

Option A (Sugarcane) is correct because Kranz anatomy is a characteristic feature of C4 plants like sugarcane.

47 Easy

47 of 55

Remembering +4 | -1

In which of the following form glucose is usually stored in plants?

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Correct option: D

Starch

Option D (Starch) is correct because plants store glucose in the form of starch, a polysaccharide.

48 Easy

48 of 55

Remembering +4 | -1

Who gave Law of

10 \%

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Correct option: B

Lindemann

Option B (Lindemann) is correct because Lindemann proposed the Law of 10% energy transfer in ecosystems.

49 Easy

49 of 55

Remembering +4 | -1

In PSII, the reaction centre chlorophyll a has an absorption peak at

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Correct option: A

680 nm

Option A (680 nm) is correct because the reaction center chlorophyll a in PSII, known as P680, has a maximum absorption peak at 680 nm.

50 Easy

50 of 55

Analyzing +4 | -1

Identify the wrong statements.

(A) Cytochrome C is a small protein attached to inner surface of the outer membrane.

(B) Electrons from complex I are transferred to ubiquinone located within the inner membrane.

(C) The temperature optimum for photosynthesis of different plants does not depend on the habitat that they are adapted to.

(D) There is no linear relationship between incident light and

\mathrm{CO}_2

fixation rates at low light intensities.

View answer and explanation

Correct option: D

A, C, D

Option A (A, B, C) is correct because statements A, B, and C contain inaccuracies regarding the location of cytochrome C, electron transfer, and temperature optima for photosynthesis.

51 Easy

51 of 55

Remembering +4 | -1

The main photosynthetic pigments in the plants are

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Correct option: C

Chlorophyll-b and chlorophyll-a

Option C (Chlorophyll-b and chlorophyll-a) is correct because chlorophyll-a and chlorophyll-b are the main photosynthetic pigments in plants.

52 Easy

52 of 55

Understanding +4 | -1

Which chemical compound/molecule supplies electrons continuously to PS-II?

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Correct option: C

{H_2}O

Option C (

{H_2}O

) is correct because water is the source of electrons for Photosystem II, which are released during photolysis.

53 Easy

53 of 55

Understanding +4 | -1

During

\mathrm{CO}_2

fixation of photosynthesis, Oxaloacetic acid is formed in which cells?

View answer and explanation

Correct option: C

Mesophyll cells of both CAM plants and

\mathrm{C}_4

plants

Option C (Mesophyll cells of both CAM plants and

\mathrm{C}_4

plants) is correct because oxaloacetic acid is initially formed in the mesophyll cells of both CAM and C4 plants during CO2 fixation.

54 Easy

54 of 55

Remembering +4 | -1

Maximum photosynthesis occurs in

View answer and explanation

Correct option: A

Red light

Option A (Red light) is correct because chlorophyll absorbs red and blue light most effectively, with red light generally leading to higher rates of photosynthesis.

55 Easy

55 of 55

Remembering +4 | -1

Which photosystem is involved in cyclic photophosphorylation?

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Correct option: B

PS-I

Option B (PS-I) is correct because cyclic photophosphorylation involves only Photosystem I.

Revision notes and key takeaways

Review PHOTOSYNTHESIS IN HIGHER PLANTS in your textbook or class notes, then use this set to check your understanding.

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Photosynthesis in higher plants practice · Easy

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