Advertisements
Advertisements
प्रश्न
Where in the lungs does gas exchange take place?
Advertisements
उत्तर
Gas exchange takes place in the alveoli of the lungs.
APPEARS IN
संबंधित प्रश्न
Given below are the end products of different reactions involving glucose.
Write the reaction number in front of the following:
(i) Anaerobic reaction =
(ii) Reaction in the human muscles =
(iii) Aerobic respiration =
(iv) Reaction in the plant cells =
(v) Reaction in the liver
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
Mention any two components of blood.
Trace the movement of oxygenated blood in the body.
Which of the following is the correct statement regarding bile?
During respiration, the plants take CO2 and release O2.
Define breathing. State the differences between breathing and respiration.
Explain why, it is dangerous to inhale air containing carbon monoxide.
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
The photosynthesis in a plant is not taking place during the day time if the plant is releasing:
One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is:
With which human organ system (or human systems) is alveoli associated?
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:
Trachea, Ciliated epithelium, Mucous, Diffusion
Match the items in Column I with the ones most appropriate in Column II. Rewrite the matching pairs.
|
Column I |
Column II |
|
(a) Alveoli |
(i) where aerobic respiration takes place |
|
(b) Bronchioles |
(ii) lined with hair |
|
(c) Nasal Chamber |
(iii) diffusion of gases |
|
(d) Bronchi |
(iv) small air tubes |
|
(v) an inverted Y shaped tube |
|
|
(vi) a common passage for food and air |
Answer the following question.
A gas is released during photosynthesis. Name the gas and also state the way by which the gas is evolved.
What is the ppCO2 in alveolar air?
Name the substances whose build-up in the muscles during vigorous physical exercise may cause cramps?
During the process of exhalation, the ribs move ______.
Breathing is a process that
- provides O2 to the body.
- breaks down food to release energy.
- helps the body to get rid of CO2.
- produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
