2021 source guide · Biology

NEET 2021 Biology Respiration in Plants Questions

Use this page to connect the official 2021 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

glycolysis, fermentation, aerobic respiration, respiratory balance and amphibolic pathways.

Original practice preview

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

Example 1 · difficulty 3/5

Which statement correctly compares gas exchange in different parts of a plant?

A. All oxygen entering the leaves must be transported to roots before respiration can occur
B. Only green organs exchange gases because non-green organs do not respire
C. A single central opening supplies respiratory gases to the entire plant
D. Leaves, woody stems and roots commonly exchange gases through stomata, lenticels and their surfaces, respectively

Example 2 · difficulty 1/5

In a plant cell, glycolysis takes place in the

A. cytoplasm
B. mitochondrial matrix
C. chloroplast stroma
D. nucleus

Example 3 · difficulty 1/5

Complete glycolysis of one glucose molecule produces how many molecules of pyruvic acid?

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

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

Respiration in Plants →

Frequently asked questions

Are these official NEET 2021 Biology Respiration in Plants 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 2021 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.