2017 source guide · Biology

NEET 2017 Biology Photosynthesis Questions

Use this page to connect the official 2017 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 4/5

In rice, a C3 plant grown under hot, dry conditions with stomata partly closed, RuBisCO increasingly acts as an oxygenase rather than a carboxylase. What is the immediate consequence of this shift?

A. Two molecules of 3-phosphoglycerate are formed and proceed normally through the Calvin cycle
B. One molecule each of 3-phosphoglycerate and phosphoglycolate is formed, with no net synthesis of sugar or ATP
C. Oxaloacetic acid is formed and decarboxylated in bundle sheath cells, releasing CO2
D. Glucose is still produced, but the pathway simply consumes additional ATP

Example 2 · difficulty 2/5

For every molecule of CO2 fixed through the Calvin cycle, 3 ATP and 2 NADPH are consumed. Accordingly, the total requirement of ATP and NADPH for the synthesis of one molecule of glucose is:

A. 18 ATP and 12 NADPH
B. 12 ATP and 12 NADPH
C. 18 ATP and 18 NADPH
D. 12 ATP and 6 NADPH

Example 3 · difficulty 2/5

An aquatic plant kept under optimal light and temperature shows a low rate of photosynthesis because the dissolved CO2 concentration is very low. When CO2 is gradually increased, the rate rises steadily and then levels off even though light and temperature remain unchanged. This observation best illustrates:

A. Emerson's enhancement effect
B. The law of mass action governing enzymatic reactions
C. Blackman's law of limiting factors
D. Liebig's law of the minimum for mineral nutrition

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 2017 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 2017 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.