Photosynthesis in Higher Plants
CBSE · Class 11 · Biology
Summary of Photosynthesis in Higher Plants for CBSE Class 11 Biology. Key concepts, important points, and chapter overview.
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Overview
Photosynthesis is the process by which green plants make food using light energy. It is important because it is the primary source of food on earth and it releases oxygen into the atmosphere. The process takes place in chloroplasts, mainly in the green parts of plants. It includes light reactions in
Key Concepts
Photosynthesis is the main process by
Photosynthesis is the main process by which green plants synthesize organic food from carbon dioxide and water using light. It also releases oxygen in
Priestley showed that plants restore air
Priestley showed that plants restore air that is used by animals and burning candles. Ingenhousz showed that sunlight is essential and that only green
The correct overall equation is 6CO2
The correct overall equation is 6CO2 + 12H2O --Light--> C6H12O6 + 6H2O + 6O2. The oxygen released comes from water.
Photosynthesis occurs in chloroplasts
Photosynthesis occurs in chloroplasts. Light reactions occur in the thylakoid membranes, while sugar formation occurs in the stroma.
The main pigments are chlorophyll
The main pigments are chlorophyll a, chlorophyll b, xanthophylls, and carotenoids. Chlorophyll a is the chief pigment. Most photosynthesis occurs in b
Learning Objectives
- Understand why photosynthesis is essential for life on earth
- Recall the early experiments that established key ideas about photosynthesis
- Identify the site of photosynthesis in plant cells and chloroplasts
- Describe the role of pigments in absorbing light
- Explain the light reaction, including Z scheme, water splitting, and ATP formation
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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