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NCERT Solutions › Biology › Chapter 14

Chapter 14: Respiration in Plants

NCERT Solutions for CBSE Class 10 Biology — 18 solved questions with detailed explanations.

18
Questions
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Solved Questions

Q1. Glycolysis occurs in the:

Difficulty: Easy · Topic: Glycolysis

Solution

Glycolysis (EMP pathway) occurs in the cytoplasm. It does not require oxygen.

Q2. The Krebs cycle takes place in the:

Difficulty: Easy · Topic: Krebs Cycle

Solution

Krebs cycle (TCA cycle) occurs in the mitochondrial matrix.

Q3. Anaerobic respiration in muscles produces:

Difficulty: Easy · Topic: Respiration in Plants

Solution

lactic acid.

Q4. Each FADH₂ yields approximately:

Difficulty: Easy · Topic: Respiration in Plants

Solution

1.5 ATP in ETC.

Q5. The net gain of ATP from one molecule of glucose in aerobic respiration is:

Difficulty: Easy-Medium · Topic: ATP Yield

Solution

Modern count: 30-32 ATP per glucose (glycolysis: 2, pyruvate oxidation: 2, Krebs: 2, ETC: 26-28 via chemiosmosis).

Q6. Anaerobic respiration in yeast produces:

Difficulty: Easy-Medium · Topic: Respiration in Plants

Solution

ethanol + CO₂.

Q7. Pyruvate is the end product of:

Difficulty: Easy-Medium · Topic: Respiration in Plants

Solution

glycolysis.

Q8. Each NADH yields approximately:

Difficulty: Easy-Medium · Topic: Respiration in Plants

Solution

2.5 ATP in ETC.

Q9. RQ for carbohydrates is:

Difficulty: Easy-Medium · Topic: Respiration in Plants

Solution

1.0.

Q10. RQ for fats is approximately:

Difficulty: Easy-Medium · Topic: Respiration in Plants

Solution

0.7.

Q11. Glycolysis produces (net):

Difficulty: Easy-Medium · Topic: Respiration

Solution

2 ATP + 2 NADH + 2 pyruvate.

Q12. Pyruvate decarboxylation produces:

Difficulty: Easy-Medium · Topic: Respiration

Solution

Acetyl CoA + CO₂ + NADH.

Q13. Krebs cycle occurs:

Difficulty: Easy-Medium · Topic: Respiration

Solution

once per acetyl CoA (twice per glucose).

Q14. ETC is located in:

Difficulty: Easy-Medium · Topic: Respiration

Solution

inner mitochondrial membrane.

Q15. Final electron acceptor in aerobic ETC is:

Difficulty: Easy-Medium · Topic: Respiration

Solution

O₂ (oxygen).

Q16. ATP synthase uses:

Difficulty: Easy-Medium · Topic: Respiration

Solution

proton gradient (chemiosmosis).

Q17. Fermentation occurs in:

Difficulty: Easy-Medium · Topic: Respiration

Solution

absence of O₂ (anaerobic).

Q18. RQ for proteins is approximately:

Difficulty: Easy-Medium · Topic: Respiration

Solution

0.8.

Other Chapters in Biology

Ch 1: The Living WorldCh 2: Biological ClassificationCh 3: Plant KingdomCh 4: Animal KingdomCh 5: Morphology of PlantsCh 6: Anatomy of PlantsCh 7: Structural Organisation in AnimalsCh 8: Cell Unit of LifeCh 9: BiomoleculesCh 10: Cell CycleCh 11: Transport in PlantsCh 12: Mineral NutritionCh 13: PhotosynthesisCh 15: Plant GrowthCh 16: Digestion & AbsorptionCh 17: Breathing & Gas ExchangeCh 18: Body Fluids & CirculationCh 19: Excretory ProductsCh 20: Locomotion & MovementCh 21: Neural ControlCh 22: Chemical Coordination

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