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Chapter Analysis
Beginner12 pages • EnglishQuick Summary
The chapter 'Respiration in Organisms' discusses the process of respiration in various living beings. It explains cellular respiration, highlighting aerobic and anaerobic processes and their importance in energy release. The chapter also explores different respiratory mechanisms in animals and plants, and how respiration varies under different conditions like exercise or rest.
Key Topics
- •Cellular respiration
- •Aerobic respiration
- •Anaerobic respiration
- •Breathing mechanisms
- •Respiratory organs
- •Gaseous exchange in plants
- •Effects of exercise on respiration
- •Respiration under different conditions
Learning Objectives
- ✓Understand the process and importance of respiration in organisms.
- ✓Differentiate between aerobic and anaerobic respiration.
- ✓Identify the various respiratory systems in animals.
- ✓Explain how respiration in plants is carried out.
- ✓Describe how physical activity affects breathing and respiration.
- ✓Understand how environmental factors influence respiratory processes.
Questions in Chapter
Why does an athlete breathe faster and deeper than usual after finishing the race?
Answer: Athletes breathe faster and deeper after finishing the race to increase the oxygen supply to their body cells, which aids in more efficient energy production.
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List the similarities and differences between aerobic and anaerobic respiration.
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Why do we often sneeze when we inhale a lot of dust-laden air?
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Which test-tube would have the highest concentration of CO2 in the experiment?
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In cockroaches, air enters the body through what?
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During heavy exercise, we get cramps in the legs due to the accumulation of what?
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Normal range of breathing rate per minute in an average adult person at rest is?
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During exhalation, how do the ribs move?
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Yeast, diaphragm, skin, leaves, fish, frog - Match them with their counterparts.
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True or False questions about breathing and respiration.
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Find the words related to the respiratory system.
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Why do mountaineers carry oxygen with them?
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Additional Practice Questions
Explain the importance of cellular respiration in organisms.
mediumAnswer: Cellular respiration is crucial for organisms as it allows the conversion of glucose into energy. This energy is vital for all cellular activities and functions such as growth, repair, and maintenance of cell structures.
What adaptations do aquatic animals have for respiration?
mediumAnswer: Aquatic animals like fish have gills that allow them to extract oxygen dissolved in water. These adaptations help them survive in their underwater habitats by efficiently managing gaseous exchange.
Describe the role of the diaphragm in respiration.
easyAnswer: The diaphragm plays a vital role in respiration by contracting and relaxing to change the pressure in the chest cavity, which facilitates the inhalation and exhalation of air.
How does respiration in plants differ from that in animals?
mediumAnswer: In plants, respiration occurs through stomata and lenticels, and involves the exchange of gases directly with the environment, whereas animals typically use respiratory organs such as lungs or gills.
What are the effects of high altitude on respiration?
hardAnswer: High altitudes can lead to lower oxygen availability, causing increased breathing rates to compensate. This can result in altitude sickness if the body acclimates too slowly.
NCERT Exemplar
AvailablePractice with NCERT Exemplar problems and solutions for this chapter. Exemplar problems are designed to help you master the concepts with advanced-level questions.
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