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प्रश्न
Observe Figure 10.2 carefully and answer the following questions.
- Which process is being tested in the activity?
- What is the result of the activity? Give reasons.
उत्तर
- The release of carbon dioxide during exhalation is being tested in the given activity.
- The lime water in test tube ‘B’ turns milky but the water in test tube A’ remains unchanged. It is because CO2 is present in the exhaled air, and when it mixes with lime water in test tube ‘B’, the lime water turns milky.
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संबंधित प्रश्न
How are oxygen and carbon dioxide transported in human beings?
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
Mention any two components of blood.
Explain why, it is dangerous to inhale air containing carbon monoxide.
State the three common features of all the respiratory organs like skin, gills and lungs.
Describe the process of respiration in the following part of a plant:
Root
Name the energy currency in the living organisms. When and where is it produced?
Give the main points of difference between respiration in plants and respiration in animals.
Describe the exchange of gases which takes place in the leaves of a plant
(a) during daytime, and (b) at night.
During respiration, the exchange of gases takes place in:
Which of the following statements are correct?
(i) pyruvate can be converted into ethanol and carbon dioxide by yeast
(ii) fermentation takes place in the case of aerobic bacteria
(iii) fermentation takes place in mitochondria
(iv) fermentation is a form of anaerobic respiration
Which of the following statements are true about respiration?
(i) during inhalation, ribs move inward and diaphragm is raised.
(ii) the gaseous exchange takes place in the alveoli.
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) alveoli increase surface area of the exchange of gases
Answer the following in detail.
How is the process of cellular respiration different from breathing?
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Mitochondria and _____________.
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
Cartilaginous |
Epiglottis |
|
Large surface area |
Diaphragm |
|
Breathing movements |
Bronchi |
|
Voice |
Alveoli |
|
Complemental air |
Larynx |
|
Swallowing |
Extra inhalation |
Draw a diagram of the human respiratory system and label - pharynx, trachea, lungs, diaphragm and alveolar sac on it.
Lack of oxygen in muscles often leads to cramps among cricketers. This results due to:
During respiration exchange of gases take place in
Explain the three pathways of breakdown in living organisms.
List the similarities between aerobic and anaerobic respiration.
