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Question
Name a waste gas released by the plants only during the day time.
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Solution
The waste gas released by plants only during the day time is oxygen (O2).
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The organs A of a person have been damaged completely due to which too much of a poisonous waste material B has started accumulating in his blood, making it dirty. In order to save this person’s life, the blood from an artery in the person’s arm is made to flow into long tubes made of substance E which are kept in coiled form in a tank containing solution F. This solution contains three materials G, H and I in similar proportions to those in normal blood. As the person’s blood passes through long tubes of substance E, most of the wastes present in it go into solution. The clean blood is then put back into a vein in the arm of the person for circulation. |
- What are organs A?
- Name the waste substance B.
- What are (i) E, and (ii) F?
- Name G, H and I.
- What is the process described above known as?
Name the following:
The outer region of kidney containing the Bowman's capsule.
If you donate one kidney to a needy patient, would it cause any harm to you? Give reason.
Name the following:
Functional unit of kidney.
Look at the figure given below. It is a section of human kidney as seen from the front.
Which area/part (give its name and number given on the diagram) which contains the following:
(i) Malpighian capsule
(ii) The pyramids
(iii) Freshly collected urine
Complete the following sentence with appropriate word:
______ supplies blood to kidney.
Complete the following sentence with appropriate word:
Besides excretion, the kidneys also carry out the important function of ______.
Complete the following sentence with appropriate words:
The outer surface of the kidney is ______ while the inner surface is ______.
Choose the correct option.
Specific gravity of urine would _______ if level of ADH increases.
“All plants give out oxygen during the day and carbon dioxide during the night”. Do you agree with this statement? Give a reason.
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
Explain the importance of soil for plant growth.
