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प्रश्न
Choose the odd one out in the following groups of four items each:
Trachea, Bronchus, Alveolus, Diaphragm
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उत्तर
Diaphragm
APPEARS IN
संबंधित प्रश्न
Carbon dioxide enters into the leaves through tiny pores present on the surface of the leaf called _________.
(a) chlorophyll
(b) chloroplast
(c) stomata
(d) epidermis
Name an animal which depends on simple diffusion of gases for breathing.
What is the name of tiny air-sacs at the end of smallest bronchioles in the lungs?
During respiration, the plants take CO2 and release O2.
Fill in the following blank with suitable word:
Gills are the breathing organs in ___________.
What type of respiration takes place in human muscles during vigorous physical exercise? Give reason for your answer
Explain why, it is dangerous to inhale air containing carbon monoxide.
Which contains more carbon dixoide : exhaled air or inhaled air? Why?
Which of the following is correct for the process of anaerobic respiration?
| Carbon dioxide always produced | A lot of energy released | |
| (a) | No | Yes |
| (b) | No | No |
| (c) | Yes | No |
| (d) | Yes | Yes |
In cockroaches, air enters the body through:
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
A student has set up "CO2 is released during respiration”. After about 1 hour he observes no change in the water level in the delivery tube. Write two possible resons for the failure of the experiment.
The major fraction of CO2 released during cellular respiration is transported by the blood to the lung capillaries ______
____________ is the maximum amount of air that the lungs can hold after a maximum forceful inspiration.
____________ is necessary for the respiration in plant.
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?
Yeast is used in wine and beer industries because it respires ______.
Visit a local doctor. Learn about the harmful effects of smoking. You can also collect material on this topic from other sources. You can seek help of your teacher or parents. Find out the percentage of people of your area who smoke. If you have a smoker in your family, confront him with the material that you have collected.
