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प्रश्न
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
'C' shaped cartilage rings and ____________.
उत्तर
'C' shaped cartilage rings and support.
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संबंधित प्रश्न
If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring? Justify your answer.
Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.
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.
Describe the process of respiration in the following part of a plant:
Leaves
From where do the aquatic animals and terrestrial animals obtain oxygen for breathing and respiration?
Why do fishes die when taken out of water?
Explain how, it would benefit deep sea divers if humans also had gills.
How are oxygen and carbon dioxide exchanged in our body during respiration?
Which of the following is not produced during anaerobic respiration in unicellular fungus?
Which of the following is known as the energy currency of the cells in biology?
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
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?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
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.
Answer the following in one word.
What is the muscular sheet below the lungs called?
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
Name the body structure concerned with the given functional activity:
Combines with the oxygen in the lungs.
State one function of the following:
Mitochondria
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
Answer the following question.
A gas is released during photosynthesis. Name the gas and also state the way by which the gas is evolved.
Answer the following question.
How is O2 and CO2 transported in human beings?
Which is the correct sequence of air passage during inhalation?
Name the energy currency in the living organisms. When and where is it produced?
The exchange of gases in the leaves takes place with the help of __________.
Visit a local doctor. Learn about the harmful effects of smoking. You can also collect material on this topic from other sources. You can seek help of your teacher or parents. Find out the percentage of people of your area who smoke. If you have a smoker in your family, confront him with the material that you have collected.
