Advertisements
Advertisements
प्रश्न
Where does the blood absorb oxygen in the human body?
Advertisements
उत्तर
Blood absorbs oxygen in the lungs. The exchange of gases takes place in the alveoli of lungs and the blood present in the blood capillaries surrounding the alveoli.
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
Which part of roots is involved in the exchange of respiratory gases?
Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.
Out of photosynthesis and respiration in plants, which process occurs:
(a) all the time?
(b) only at daytime?
The trachea divides into tow tubes at its lower end. What is the name of these tubes?
In the lungs what substance is taken into the body?
State whether the following statement is true or false:
Fish and earthworm exchange gases during respiration in the same way.
Explain why, a land plant may die if its roots remain waterlogged for a long time.
Which of the following is not produced during anaerobic respiration in unicellular fungus?
During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
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
Which of the following is most likely to have a much higher breathing rate?
There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X.
(a) What is (i) organ P, and (ii) waste substance Q?
(b) Name (i) artery R, and (ii) vein T.
(c) What are tiny filters S known as?
(d) Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Alveoli and _____________.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Mitochondria and _____________.
State one function of the following:
Diaphragm
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
List the organs of Human respiratory system.
How much percent of C02 is transported in a dissolved form as carbonic acid?
Mark the following statement as True or False. Correct the false statement.
Insects have spiracles on the lower surface of the body
