Advertisements
Advertisements
Question
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
Advertisements
Solution
(c)
Carbon dioxide enters the leaves through tiny pores present on the surface of the leaf called stomata.
APPEARS IN
RELATED QUESTIONS
Which part of roots is involved in the exchange of respiratory gases?
Name two animals which breathe through gills.
What organs are attached to the two bronchi?
Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
Explain how, it would benefit deep sea divers if humans also had gills.
What are the major organs of respiratory system in man (or humans)?
How are oxygen and carbon dioxide exchanged in our body during respiration?
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of ______.
In cockroaches, air enters the body through ______.
What is the name of tissues which transport water and minerals in a plant?
Out of xylem and phloem, which one carries materials upwards as well as downwards?
In the lungs, what substance is removed from the body?
Name the body structure concerned with the given functional activity:
Combines with the oxygen in the lungs.
Name the body structure concerned with the given functional activity:
Protects the lungs from mechanical injury
What is the normal percentage composition of gases in inspired and expired air respectively?
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 |
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 |
Answer the following question.
How is O2 and CO2 transported in human beings?
______ refers to the physical process by which gaseous exchange takes place between the atmosphere and the lungs.
Visit a doctor. Find out about artificial respiration. Ask the doctor:
- When does a person need artificial respiration?
- Does the person need to be kept on artificial respiration temporarily or permanently?
- From where can the person get supply of oxygen for artificial respiration?
