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प्रश्न
Explain the difference between the excretory system of humans and plants.
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उत्तर
| Excretory system in humans | Excretory system in plants |
| Humans have a well-developed excretory system for the elimination of nitrogenous wastes. | Plants do not have a well-developed excretory system for the elimination of nitrogenous wastes. |
| The human excretory system comprises the kidneys, blood vessels that join them, ureters, urinary bladder, and urethra. | Plants use different strategies for excretion. |
| Excretion is in the form of urine produced to filter out the waste products, like urea and uric acid, from the blood. | Excretion is by means of tannins, gums, essential oils, etc stored in special cells. |
APPEARS IN
संबंधित प्रश्न
The kidneys in human beings are a part of the system for ______.
State the exact location of the Loop of Henle.
Draw the well-labelled diagram of the human excretory system
Name the basic filtration unit present in the kidney.
Name a waste gas released by the plants only during the day time.
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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 vein in which urea concentration is maximum
Why is it necessary to maintain a normal osmotic concentration of the blood?
Differentiate between the following pairs of term :
Renal pelvis and renal papilla
What is dialysis? Under what condition is it carried out?
Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:
Name the functional units of the kidneys.
Complete the following sentence with appropriate word:
______ is the functional unit of kidney.
Choose the correct option.
In human beings, uric acid is formed due to metabolism of ______.
Hypotonic filtrate is formed in _______.
Answer the following question.
Birds are uricotelic in nature. Give reason.
The mode of excretion of nitrogenous wastes like ammonia which takes place by simple diffusion is called ______.
Bilirubin and Biliverdin are pigments which are ____________.
What is the purpose of making urine in the human body?
Name the following;
Three nitrogenous wastes of our body.
