EASY
Earn 100
What is external respiration?
Important Questions on Breathing and Exchange of Gases
EASY
Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external intercostal muscles
(c) Pulmonary volume decreases
(d) Intrapulmonary pressure increases
MEDIUM
Give two differences between respiration and burning?
EASY
Where does indirect respiration occur?
EASY
Oblique fissure in human is present in:
MEDIUM
Make a comparison between photosynthesis and respiration.
MEDIUM
Which one of the following statements is incorrect?
EASY
Name the organisms in which direct respiration occurs?
HARD
How energy is formed from oxidation of carbohydrates, fats and proteins? Correct the diagram given below.
EASY
What is the major similarity between respiration and combustion?
MEDIUM
What is meant by cellular respiration? Write what happens in cells in the presence or in the absence of oxygen.
MEDIUM
Why don't plants have a consolidated respiratory system?
MEDIUM
Give three reasons to justify that energy is required during sleep.
MEDIUM
In the experimental set-up shown below, water is found to arise in the delivery tube because
MEDIUM
How is breathing different from respiration?
EASY
Skin is an accessory organ of respiration in
MEDIUM
Give scientific reasons.
Oxygen is necessary for complete oxidation of glucose.
MEDIUM
Given below are four matchings of an animal and its kind of respiratory organ
(i). Silverfish — Tracheal tubes
(ii). Scorpion — Book lung
(iii). Sea squirt — Pharyngeal gills
(iv). Dolphin — Skin
The correct matchings are
MEDIUM
Why do fish continuously gulp water?
