Example 1 · difficulty 1/5
The principal route for exchange of oxygen and carbon dioxide between a leaf and the atmosphere is through
- A. stomata
- B. xylem vessels
- C. companion cells
- D. root hairs
2020 source guide · Biology
NEET 2020 Biology Respiration in Plants 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.
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 2 · difficulty 2/5
What is the main respiratory significance of the interconnected intercellular spaces in plant tissues?
- A. They actively pump oxygen into every cell using ATP
- B. They provide internal pathways along which gases can diffuse
- C. They convert carbon dioxide into oxygen in darkness
- D. They prevent gases from reaching living cells
Example 3 · difficulty 2/5
How do young roots obtain most of the oxygen required for respiration under well-aerated soil conditions?
- A. By producing oxygen from carbon dioxide in root hairs
- B. By receiving oxygen exclusively through phloem from leaves
- C. By diffusion from air present in soil spaces through the root surface
- D. By breaking down mineral salts absorbed from the soil
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
Frequently asked questions
Are these official NEET 2020 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 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.