2020 source guide · Biology

NEET 2020 Biology Plant Physiology Questions

Use this page to connect the official 2020 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 300 verified questions →Check official NTA archive ↗

What to master

photosynthesis, respiration, growth and hormonal control.

Original practice preview

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

Example 1 · difficulty 4/5

Study the following statements about plant growth regulators: (i) Applying auxin to a plant accelerates the abscission of its leaves. (ii) Cytokinins promote outgrowth of lateral buds and thereby help overcome apical dominance. (iii) Ethylene can break seed dormancy and initiate germination in certain seeds. (iv) Abscisic acid increases a plant's tolerance to water stress largely by promoting stomatal closure. How many of these statements are correct?

A. Three
B. Two
C. Four
D. One

Example 2 · difficulty 1/5

In buttercup, the same plant produces broad, rounded leaves when its shoots are in air, but finely dissected leaves when shoots develop underwater. The capacity of a single genotype to give rise to different phenotypes under different environmental conditions is termed:

A. Differentiation
B. Dedifferentiation
C. Senescence
D. Plasticity

Example 3 · difficulty 1/5

In which part of the cell does glycolysis occur in all living organisms?

A. Mitochondrial matrix
B. Inner mitochondrial membrane
C. Cytoplasm
D. Peroxisome

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 →Respiration in Plants →Plant Growth and Development →

Frequently asked questions

Are these official NEET 2020 Biology Plant Physiology 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 2020 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.