Class 11 · Photosynthesis in Higher Plants

Plant Pigments and Light Absorption — NEET Biology

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📖 NCERT Source

Pigments are substances that have an ability to absorb light, at specific wavelengths. Can you guess which is the most abundant plant pigment in the world? Let us study the graph showing the ability of chlorophyll a pigment to absorb lights of different wavelengths. Of course, you are familiar with the wavelength of the visible spectrum of light as well as the VIBGYOR.

NCERT Biology · Class 11 · Chapter 11 · Paragraph 25
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Match the column: Column I A. Absorption spectrum B. Action spectrum C. Engelmann’s experiment D. Carotenoids Column II 1. Range of light absorbed by pigment 2. Wavelength effectiveness for photosynthesis 3. Demonstrated O₂ release at red and blue light 4. Accessory pigments absorbing blue-green light

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Correct answer: A A–1, B–2, C–3, D–4

Absorption spectrum shows pigment capacity, action spectrum shows photosynthetic output, Engelmann linked O₂ release to red/blue, carotenoids absorb blue-green.

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Pigments are substances that have an ability to absorb light, at specific wavelengths. Can you guess which is the most abundant plant pigment in the world?
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Photosynthesis in Higher Plants, Class 11 NCERT Biology.

Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.

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