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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
How is the amount of urine produced regulated?
Bile, Urea, Uric acid, Ammonia
the Biological/technical term Pigment providing colour to urine.
The diagram given below is that of a structure present in a human kidney.
Study the same and answer the questions that follow:
1) Name the structure represented in the diagram
2) What is the liquid entering part ‘1’ called?
Name two substances present in this liquid that are reabsorbed in the tubule.
3) What is the fluid that comes to part ‘2’ called?
Name the main nitrogenous waste in it.
4) Mention the three main steps involved in the formation of the fluid mentioned in (iii) above
5) Name the substance which may be present in the fluid in part ‘2’ if a person suffers from Diabetes mellitus.
Name the various organs of the human excretory system.
In which of the following are the largest amounts of nitrogen excreted from a mammalian body?
(a) breath
(b) sweat
(c) urine
(d) faeces
Differentiate between
tannins and resins
Choose the odd one out in the following serie:
Column of Bertini, minora calyces, brain.
Name the following:
Functional unit of kidney.
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from renal artery
2. Efferent arteriole
3. Bowman's capsule
4. Glomerulus
5. Proximal convoluted tubule with blood capillaries
6. Distal convoluted tubule with blood capillaries
7. Collecting tubule
8. U-shaped loop of Henle
Study the diagram and answer the question that follow:
Which structure contains the highest concentration of urea?
Differentiate between:
Renal cortex and Renal medulla.
Give Technical Term:
The organ which filters out urea and uric acid from the bloodstream.
Complete the following sentence with appropriate word:
The U-shaped portion of a nephron located in the medulla region is called ______.
Complete the following sentence with appropriate word:
______ supplies blood to kidney.
Write the functional activity of the following structure: Renal vein
Choose the correct option.
The minor calyx _______.
Answer the following question.
Why do we get bad breath after eating garlic or raw onion?
Two green plants are kept separately in oxygen-free containers, one in the dark and the other in continuous light. Which one will live longer? Give reasons.
Name the following:
The main nitrogenous waste formed in the body.
