Respiration in Plants
CBSE · Class 11 · Biology
Summary of Respiration in Plants for CBSE Class 11 Biology. Key concepts, important points, and chapter overview.
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Overview
Respiration in plants is the cellular process by which food is oxidised to release energy and store it in ATP. Plants do not use energy from food directly; instead, the released energy is trapped step by step in the form of ATP, which serves as the energy currency of the cell. In green plants, the f
Key Concepts
Cellular respiration is the oxidation
Cellular respiration is the oxidation of organic food inside cells to release energy. This energy is not used directly; it is captured in ATP. The pro
Glycolysis is a chain of ten
Glycolysis is a chain of ten enzyme-controlled reactions in the cytoplasm that converts one molecule of glucose into two molecules of pyruvic acid. AT
Fermentation is the incomplete breakdown
Fermentation is the incomplete breakdown of glucose under anaerobic conditions. In yeast, pyruvic acid is converted to carbon dioxide and ethanol by p
Aerobic respiration is the complete oxidation
Aerobic respiration is the complete oxidation of organic substances in the presence of oxygen. Pyruvate is transported into mitochondria, converted to
Pyruvic acid is oxidatively decarboxylated
Pyruvic acid is oxidatively decarboxylated in the mitochondrial matrix by pyruvic dehydrogenase to form acetyl CoA, carbon dioxide, NADH, and hydrogen
Learning Objectives
- Understand the meaning of cellular respiration and its relation to energy release
- Describe glycolysis as the first stage of respiration and identify its key products
- Explain fermentation and compare alcoholic and lactic acid fermentation
- Describe aerobic respiration, including pyruvate oxidation, the Krebs' cycle, and the electron transport system
- Understand how ATP is formed by substrate level phosphorylation and oxidative phosphorylation
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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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