Respiration in Plants — Chapter Summary
ICSE · Class 9 · Biology
Summary of Respiration in Plants for ICSE Class 9 Biology. Part of the ICSE Class 9 Biology syllabus. Respiration is a catabolic process of releasing.
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Overview
Respiration is a catabolic process of releasing energy from simple sugar glucose for carrying out life processes. In plants, respiration happens in every living cell and energy is released through the breakdown of glucose in a series of steps. The process uses ATP as the immediate energy source, so
Key Concepts
Respiration is the breakdown of glucose
Respiration is the breakdown of glucose in living cells to release energy. It occurs in a series of enzyme-controlled steps and produces carbon dioxid
Glycolysis is the first major phase
Glycolysis is the first major phase of respiration. It converts glucose into pyruvate and occurs in the cytoplasm.
Krebs cycle is the second major
Krebs cycle is the second major phase of respiration. It occurs in mitochondria and helps convert pyruvate into carbon dioxide, water, and ATP.
ATP is the energy
ATP is the energy-storing product of respiration and is called the energy currency of the cell. When energy is used, ATP changes into ADP, and ADP cha
Aerobic respiration occurs in the presence
Aerobic respiration occurs in the presence of oxygen and involves complete breakdown of glucose to carbon dioxide and water. It yields 38 ATP per mole
Learning Objectives
- Understand the meaning of respiration and its role in releasing energy
- Identify the main steps of respiration: glycolysis and Krebs cycle
- Distinguish between aerobic and anaerobic respiration in plants
- Explain how plants obtain oxygen and remove carbon dioxide
- Describe experiments that prove oxygen use, carbon dioxide release, heat production, and anaerobic respiration
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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