Class 11 Biology — Chapter 11: Photosynthesis in Higher Plants
60 practice questions · 20 Easy · 20 Medium · 20 Hard
Practise Class 11 Biology Chapter 11, "Photosynthesis in Higher Plants", with 60 NCERT-aligned multiple-choice questions. The set is split into 20 Easy, 20 Medium and 20 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and NEET UG.
"Photosynthesis in Higher Plants" is one of the chapters where diagram-based recall, terminology and NCERT line-by-line accuracy really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Photosynthesis in Higher Plants, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 11 Biology mastery score. A few sample questions are shown below; sign in free to practise all 60.
Key concepts: Photosynthesis in Higher Plants (Class 11 Biology)
This chapter covers how green plants make food — the light and dark reactions of photosynthesis and the factors that affect them.
- Site & pigments
- Photosynthesis occurs in chloroplasts; chlorophyll and accessory pigments absorb light energy.
- Light reaction
- In the thylakoids, light splits water (photolysis), releasing O₂ and producing ATP and NADPH.
- Dark reaction (Calvin cycle)
- In the stroma, CO₂ is fixed using ATP and NADPH to form sugars; RuBisCO is the key enzyme.
- C3 vs C4 pathways
- C4 plants (e.g. maize) avoid photorespiration and are more efficient in hot, dry climates than C3 plants.
- Limiting factors
- Light, CO₂, temperature and water affect the rate (Blackman's law of limiting factors).
Key formulas — Photosynthesis in Higher Plants
💡 Exam tips for Photosynthesis in Higher Plants
- The O₂ released in photosynthesis comes from water (photolysis), not from CO₂.
- C4 plants minimise photorespiration, making them more efficient than C3 plants in hot conditions.
Sample questions
Site of photosynthesis in cell:
Thylakoids and stroma.
First stable product of C₃ pathway:
3-carbon compound (C₃) — hence the name.
First stable product of C₄ pathway:
Oxaloacetate, fixed by PEP carboxylase.
Photosynthesis in Higher Plants — FAQs
What are the key concepts in Class 11 Biology Photosynthesis in Higher Plants?+
This chapter covers how green plants make food — the light and dark reactions of photosynthesis and the factors that affect them. Key ideas include Site & pigments, Light reaction, Dark reaction (Calvin cycle), C3 vs C4 pathways, Limiting factors.
What does Class 11 Biology Chapter 11 (Photosynthesis in Higher Plants) cover on XamBaaz?+
It covers 60 NCERT-aligned MCQs on "Photosynthesis in Higher Plants" — 20 Easy, 20 Medium and 20 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and NEET UG.
Are these "Photosynthesis in Higher Plants" questions free to practise?+
Yes — sign in with Google to practise "Photosynthesis in Higher Plants" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Photosynthesis in Higher Plants" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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