Class 11 Biology — Chapter 12: RESPIRATION IN PLANTS

What you'll learn

• ▸Introduction to Cellular Respiration
• ▸Glycolysis (EMP Pathway)
• ▸Fermentation
• ▸Aerobic Respiration
• ▸The Respiratory Balance Sheet
• ▸Amphibolic Pathway
• ▸Respiratory Quotient (RQ)
• ▸Gaseous Exchange in Plants

Chapter Summary

--- PAGE 1 --- 11080CH14 CHAPTER 12 RESPIRATION IN PLANTS 12.1 Do Plants Breathe? 12.2 Glycolysis 12.3 Fermentation 12.4 Aerobic Respiration 12.5 The Respiratory Balance Sheet 12.6 Amphibolic Pathway 12.7 Respiratory Quotient All of us breathe to live, but why is breathing so essential to life? What happens when we breathe? Also, do all living organisms, including plants and microbes, breathe? If so, how? All living organisms need energy for carrying out daily life activities, be it absorption, transport, movement, reproduction or even breathing. Where does all this energy come from? We know we eat food for energy – but how is this energy taken from food? How is this energy utilised? Do all foods give the same amount of energy? Do plants ‘eat’? Where do plants get their energy from? And micro-organisms – for their energy requirements, do they eat ‘food’? You may wonder at the several questions raised above – they may seem to be very …

Practice Questions from this Chapter

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1. Compare plant and animal respiration. Get Solution →
2. Explain how plants get energy. Get Solution →
3. Describe ATP's role in cells. Get Solution →
4. What is the process of breaking C-C bonds of complex compounds within a cell to release energy called? Get Solution →
5. According to the text, where in a eukaryotic cell does glycolysis occur? Get Solution →
6. What is the common term for the compounds that are oxidised during the process of respiration? Get Solution →
7. Which molecule acts as the 'energy currency of the cell'? Get Solution →
8. Besides stomata, what other structures do plants use for gaseous exchange? Get Solution →

Did you know?

• 💡 Some desert plants breathe mostly at night to conserve precious water during the day.
• 💡 Your body cycles through its entire weight in ATP energy every single day.
• 💡 Early Earth had no oxygen, so the first living things respired completely without it.
• 💡 A single sugar molecule can fuel a human's strenuous activity for a few seconds.
• 💡 Yeast 'breathes' out carbon dioxide, making bread rise and creating bubbles in drinks.

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