Skip to content
LoginStart free

Class XI · Biology

Respiration in Plants: NEET MCQ practice

262 practice questions on Respiration in Plants, including 16 from past NEET papers, each with an explanation. Practise them chapter by chapter in the GyaanLoop app.

262

Practice questions

160

Easy

99

Medium

3

Hard

Get it on Google PlayPractise on the web →

What Respiration in Plants covers

Topics in the NEET (UG) 2026–27 syllabus for this chapter.

  • Exchange of gases
  • Cellular respiration- glycolysis, fermentation (anaerobic), TCA cycle, electron transport system (aerobic)
  • Energy relations- number of ATP molecules generated
  • Amphibolic pathways; respiratory quotient

Past NEET questions on Respiration in Plants

Try each one, then open the answer and explanation.

Question 1 · NEET 2024

Match List-I with List-II: List-I List-II A. ETS Complex I I. NADH Dehydrogenase B. ETS Complex II II. Cytochrome bC1 C. ETS Complex III III. Cytochrome C oxidase D. ETS Complex IV IV. Succinate Dehydrogenase Choose the correct answer from the options given below:

  1. A.A-IV, B-I, C-III, D-II
  2. B.A-I, B-IV, C-II, D-III
  3. C.A-III, B-I, C-IV, D-II
  4. D.A-I, B-II, C-IV, D-III
Show answer

Answer: B. A-I, B-IV, C-II, D-III

ETS complexes in oxidative phosphorylation: Complex I = NADH dehydrogenase; Complex II = succinate dehydrogenase; Complex III = cytochrome bc1; Complex IV = cytochrome c oxidase.

Question 2 · NEET 2022

Match List - I with List - II List – I List - II (a) ETS complex-l (i) Cyt bc1 (b) ETS complex-II (ii) Cyt a, a3 and 2 copper centres (c) ETS complex-Ill (iii) NADU dehydrogenase (d) ETS complex-IV (iv) Ubiquinone and FADH dehydrogenase Choose the correct answer from the options given below:

  1. A.(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
  2. B.(a)-(iii), (b)-(ii), (c).(i), (d)-(iv)
  3. C.(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
  4. D.(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii) Ans.
Show answer

Answer: C. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

ETS Complex I is NADH dehydrogenase (iii). Complex II contains FADH2, succinate dehydrogenase, not listed, but likely ubiquinone and FADH dehydrogenase (iv). Complex III is Cyt bc1 (i). Complex IV is Cyt a,a3 with copper centers (ii). Match: a-iii, b-iv, c-i, d-ii.

Question 3 · NEET 2022

Identify the cytochrome which acts as a mobile carrier for the transfer of electrons between complex III and IV?

  1. A.Cytochrome a3
  2. B.Cytochrome b c1
  3. C.Cytochrome c
  4. D.Cytochrome a Ans.
Show answer

Answer: C. Cytochrome c

In the mitochondrial electron transport chain, cytochrome c is a soluble protein that shuttles electrons from Complex III (cytochrome bc1 complex) to Complex IV (cytochrome c oxidase).

Question 4 · NEET 2022

What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?

  1. A.Four
  2. B.Six
  3. C.Two
  4. D.Eight
Show answer

Answer: C. Two

During glycolysis converting glucose to pyruvate, net ATP production is 2 ATP per glucose molecule.

Question 5 · NEET 2022

What amount of energy is released from glucose during lactic acid fermentation?

  1. A.Approximately 15%
  2. B.More than 18%
  3. C.About 10%
  4. D.Less than 7%
Show answer

Answer: D. Less than 7%

Complete oxidation of glucose yields ~2900 kJ/mol, but fermentation yields just ~150 kJ/mol. That's about 5–6% of total energy, which is less than 7%.

More Class XI Biology chapters

All Biology chapters →