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प्रश्न
What would happen if all the green plants disappear from the earth?
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उत्तर
Green plants provide food and oxygen to all other living organisms. If they disappear from the Earth, all other organisms will die due to starvation and lack of oxygen for respiration.
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संबंधित प्रश्न
How are oxygen and carbon dioxide transported in human beings?
Name two animals which breathe through gills.
In the lungs what substance is taken into the body?
Give the main points of difference between respiration in plants and respiration in animals.
Which of the following is most likely to have a much higher breathing rate?
In the lungs what substance is removed from the body?
Out of xylem and phloem, which one carries materials only upwards?
Tick the most appropriate answer.
The products of respiration are :
Choose the odd one out in the following groups of four items each:
Diffusion, Respiratory gases, Alveoli, Capillary network
Name the body structure concerned with the given functional activity:
Combines with the oxygen in the lungs.
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 _____________.
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
Given below is an overall chemical reaction of a certain process:
C6H12O6→LacticAcid+2ATP+Heat energy
Is this reaction applicable to animals or to plants or to both animals and plants?
Answer the following question.
In the experimental set up to show that "CO2 is given out during respiration", name the substance taken in the small test tube kept in the conical flask. State its function and the consequence of its use.
Answer the following question.
How is O2 and CO2 transported in human beings?
Define respiration.
What percent of oxygen is transported in a dissolved state by the plasma?
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
The function of KOH is to absorb ______.
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.
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?
