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प्रश्न
Differentiate protonephridia from metanephridia.
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उत्तर
| Sr. No. | Protonephridia | Metanephridia |
| 1. | Primitive kidneys are protonephridia | Tubular excretory structures are |
| 2. | These are found in flatworms. | These are found in annelids and molluscs |
संबंधित प्रश्न
Name the following:
A loop of capillary running parallel to the Henle’s loop
A healthy adult human excretes (on an average) _______ gm of urea/day.
Fill in the blank.
Urine contains .................... and ................. as nitrogenous waste.
The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow :
Label the parts marked 2 and 4. Mention the function of part 5.
Draw and label the diagram.
Nephron
Choose the correct answer:
Uric acid is excreted by _______________
Choose the correct answer:
Presence of RBCs in urine is called _____________
Given below is the figure of certain organs and associated parts in the human body. Study the same and answer the question that follow:
Name the two main organic constituents of the fluid that flows down the part labeled '3'.
The given diagram represents a nephron and its blood supply. Study the diagram and answer the following question :
State the reason for the high hydrostatic pressure in the glomerulus.
Give Reasons for the Following:
It is necessary to maintain a normal osmotic concentration of blood
Complete the following sentence with appropriate word:
Automatic self-regulation of salt and water within the body is known of ______.
Choose the correct option.
Volume of the urine is regulated by ______.
Complete the diagram/chart with correct labels/ information. Write the conceptual details regarding it.
What is the CORRECT sequence of the different parts of the nephron from Malpighian corpuscle?
Arrange the following statements in the correct order in which they occur during the formation and removal of urine in human beings.
- Ureters carry urine to the urinary bladder.
- Wastes dissolved in water are filtered out as urine in the kidneys.
- Urine stored in the urinary bladder is passed out through the urinary opening at the end of the urethra.
- Blood containing useful and harmful substances reaches the kidneys for filtration.
- Useful substances are absorbed back into the blood.
Organs that are concerned with the formation, storage, and elimination of urine constitute the ______.
Give two examples of the following:
Accessory excretory organs
The organ that does not belong to the excretory system:
Name the following:
The organ through which urea is released outside the body of a human being.
