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प्रश्न
Name two animals which breathe through gills.
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उत्तर
Aquatic animals like fishes, prawns and mussels breath through gills.
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संबंधित प्रश्न
Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.
Fill in the Following Blank with Suitable Word.
_________ In the Lungs Provide a Very Large Surface Area for Gaseous Exchange.
Explain why, a land plant may die if its roots remain waterlogged for a long time.
Define breathing. State the differences between breathing and respiration.
State the three common features of all the respiratory organs like skin, gills and lungs.
Explain how, it would benefit deep sea divers if humans also had gills.
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of:
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
An organism X having breathing organs A lives on land. When organism X goes underwater, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of the water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes, and rivers can survive on land as well as in water equally well.
(a) What could organism X be? Name the breathing organs A.
(b) What could organism Y be? Name the breathing organs B.
(c) What could organism Z be? Name the breathing organs C and D.
(d) Out of X, Y, and Z, which organism is (i) amphibian, (ii) aquatic, and (iii)
terrestrial?
With which human organ system (or human systems) is alveoli associated?
Differentiate between
External respiration and Internal respiration
Choose the odd one out in the following groups of four items each:
Ethyl alcohol, Carbon dioxide, Starch, Oxygen
Choose the odd one out in the following groups of four items each:
Diffusion, Respiratory gases, Alveoli, Capillary network
Choose the odd one out in the following groups of four items each:
Trachea, Ciliated epithelium, Mucous, Diffusion
Choose the odd one out in each of the following groups of four items each:
Oxyhaemoglobin, Carbaminohaemoglobin, Hypoxia, Carboxyhaemoglobin
Name the body structure concerned with the given functional activity:
Protects the lungs from mechanical injury
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Diaphragm and _____________.
Lack of oxygen in muscles often leads to cramps among cricketers. This results due to:
The oxygen dissociation curve is a sigmoid curve and it shifts towards the right due to ______.
