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
Connect the official 2020 paper with current Biology practice without labelling original previews as PYQs.
150 original questions · explicit provenance labels
BiologyPlate 68
NeetVellum atlas · fig. biology
68
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.