2026 source guide · Biology

NEET 2026 Biology Photosynthesis Questions

Use this page to connect the official 2026 paper with current Biology practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 100 verified questions →Check official NTA archive ↗

What to master

pigments, light reactions, carbon fixation, photorespiration and limiting factors.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 3/5

Why does the action spectrum of photosynthesis resemble, but not exactly duplicate, the absorption spectrum of chlorophyll a alone?

A. The action spectrum records only reflected light, whereas chlorophyll a records transmitted light.
B. Chlorophyll a absorbs every wavelength equally after entering a reaction centre.
C. Photosynthesis is independent of pigments at wavelengths not absorbed by chlorophyll a.
D. Accessory pigments absorb additional wavelengths and transfer excitation energy, contributing to photosynthesis measured in the action spectrum.

Example 2 · difficulty 1/5

Which statement correctly describes the functional relationship between the antenna pigments and the reaction centre of a photosystem?

A. Antenna pigments absorb light and transfer excitation energy to the reaction-centre chlorophyll a.
B. Antenna pigments donate electrons directly to the final electron acceptor NADP⁺.
C. The reaction centre is made only of carotenoids that protect the antenna chlorophylls.
D. Every pigment molecule in the photosystem independently splits water.

Example 3 · difficulty 1/5

Which pairing of photosystem and reaction-centre chlorophyll is correct?

A. Photosystem I — P680; Photosystem II — P700
B. Photosystem I — P700; Photosystem II — P680
C. Photosystem I — P700; Photosystem II — P700
D. Photosystem I — P680; Photosystem II — P680

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

Photosynthesis in Higher Plants →

Frequently asked questions

Are these official NEET 2026 Biology Photosynthesis PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2026 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.