NEET 2025 Level Photosynthesis in Higher Plants Botany NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Identify the option where the name of the scientist is not correctly matched with discovery related to understanding of the process of photosynthesis:

1.	Cornelius van Neil	Oxygen evolved comes from water
2.	T W Engelmann	First absorption spectrum of chlorophyll a
3.	Joseph Priestley	Plants restore to the air whatever breathing animals remove
4.	Jan Ingenhousz	Sunlight is essential for photosynthesis

Subtopic: Historical View: Experiments |

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Who discovered that plants in the presence of light produce a gas that supports combustion, which is part of the process of photosynthesis?
1. Jan Ingenhousz
2. Joseph Priestley
3. Melvin Calvin
4. Robin Hill

Subtopic: Historical View: Experiments |

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In the experiment conducted by T.W. Engelmann aerobic bacteria were used.

1.	To determine the action spectrum
2.	To determine the absorption spectrum of chlorophyll.
3.	To detect the sites of oxygen (O₂) evolution.
4.	To detect the oxidizing species in the photosynthetic reactants.

Subtopic: Historical View: Experiments |

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Identify the correct statements:

I:	Only green plants can prepare their own food.
II:	In green plants, all cells, tissues and organs photosynthesise.

1.	Only I
2.	Only II
3.	Both I and II
4.	Neither I nor II

Subtopic: Introduction | Historical View: Experiments | Pigments |

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Accessory pigments of photosynthesis in higher plants:

I:	include chlorophyll b, xanthophylls and carotenoids.
II:	absorb light and transfer electrons to chlorophyll a.
III:	protect chlorophyll a from photo-oxidation.

1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct

Subtopic: Pigments |

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In photosynthesis, what occurs in PS-II?

1.	It absorbs longer wavelength of light and e^- from H₂O
2.	It absorbs shorter wavelength of light and e^- from H₂O
3.	It absorbs longer wavelength of light and e^- from NADP
4.	It absorbs shorter wavelength of light and e^- from NADP

Subtopic: Photosynthetic Pigments |

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The colour/s of visible light that work/s least well for photosynthesis is/are:
1. Red and Blue
2. Violet and Yellow
3. Green
4. Yellow

Subtopic: Pigments |

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Consider the given two statements;

Statement I:	The action spectrum of photosynthesis overlaps completely with the absorption spectrum of chlorophyll a.
Statement II:	Accessory pigments like chlorophyll b, xanthophylls, and carotenoids widen the range of light wavelengths that can be utilized for photosynthesis.

1.	Statement I is correct; Statement II is correct
2.	Statement I is correct; Statement II is incorrect
3.	Statement I is incorrect; Statement II is correct
4.	Statement I is incorrect; Statement II is incorrect

Subtopic: Pigments |

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Which of the following replaces the electrons removed from the reaction center chlorophyll-A molecule of the photosystem I in non-cyclic photophosphorylation?
1. The light harvesting complex of PS-I
2. Water
3. PS-II
4. NADPH

Subtopic: Light Reaction: Photophosphorylation |

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Consider the given two statements:

Assertion (A):	Water molecules appear on both sides of the equation of photosynthesis.
Reason (R):	The molecules that enter the reaction are not the same molecules that emerge from the reaction.

1.	Both (A) and (R) are True and (R) correctly explains (A).
2.	Both (A) and (R) are True but (R) does not correctly explain (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False

Subtopic: Light Reaction: Photophosphorylation | Light Reactions :1 | Light Reactions :2 | Light Reactions :3 |

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Select Chapter Topics:

Introduction

Historical View: Experiments

Chloroplast Structure

Photosynthetic Pigments

Redtrop Experiment

Emerson's Enhancement Experiment

Photosystems

Light Reaction: Electron Transport

Light Reaction: Photophosphorylation

Dark Reaction: Biosynthetic Phase

Dark Reaction : Calvin Cycle

C4 Cycle (Hatch & Slack Pathway)

C4 Plants Examples

CAM Pathway

Photorespiration

Factors Affecting Photosynthesis

Pigments

Light Reactions

Nitrogen Metabolism

Chemiosmotic hypothesis

WHERE ARE THE ATP AND NADPH USED

Summary

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Select Chapter Topics:

Introduction

Historical View: Experiments

Chloroplast Structure

Photosynthetic Pigments

Redtrop Experiment

Emerson's Enhancement Experiment

Photosystems

Light Reaction: Electron Transport

Light Reaction: Photophosphorylation

Dark Reaction: Biosynthetic Phase

Dark Reaction : Calvin Cycle

C4 Cycle (Hatch & Slack Pathway)

C4 Plants Examples

CAM Pathway

Photorespiration

Factors Affecting Photosynthesis

Pigments

Light Reactions

Nitrogen Metabolism

Chemiosmotic hypothesis

WHERE ARE THE ATP AND NADPH USED

Summary

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