How mant types of pigments are involved in photosynthesis?? — Photosynthesis in higher plants NEET Questions 2026

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MCQ

What is the role of accessory pigments in photosynthesis?

A. Fix carbon for photosynthesis
B. Absorb only red light
C. Broaden the absorption spectrum
D. Provide ADP to convert to ATP

✅ Correct Answer: C

Accessory pigments help capture light from additional wavelengths and pass it to chlorophyll a.

MCQ

How do accessory pigments enhance photosynthetic efficiency?

A. They fix atmospheric CO₂
B. They provide energy and nutrients to the main photosynthetic pigment
C. They absorb additional light wavelengths and pass energy to chlorophyll a
D. They convert glucose into starch

✅ Correct Answer: C

Accessory pigments expand the range of light absorption and funnel energy to the reaction center.

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MCQ

Match the following pigments with their characteristics: A. Chlorophyll a B. Chlorophyll b C. Xanthophyll D. Carotene 1. Orange 2. Yellow-green 3. Primary pigment 4. Yellow

A. A–2, B–4, C–3, D–1
B. A–1, B–3, C–2, D–4
C. A–4, B–1, C–2, D–3
D. A–3, B–2, C–4, D–1

✅ Correct Answer: D

The chromatogram reveals the characteristic colors and roles of these pigments.

MCQ

Which pigment’s function would be most critical under high-light stress?

A. Chlorophyll a
B. Chlorophyll b
C. Xanthophyll
D. Carotenoids

✅ Correct Answer: D

Carotenoids prevent oxidative damage caused by excess light.

MCQ

How does the combined presence of chlorophylls and carotenoids optimize energy capture?

A. They fix different carbon molecules
B. They work under different temperatures
C. They produce more oxygen
D. They absorb distinct wavelengths of light

✅ Correct Answer: D

Each pigment absorbs specific light bands, enhancing total light absorption.

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How mant types of pigments are involved in photosynthesis?? — NEET Biology Questions

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