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प्रश्न
Explain in your own words with suitable examples.
How is excretion in plants useful to human beings?
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उत्तर
Excretion in plants results in the production of various kinds of excreta which are waste for the plant but are equally important for human use.
The following examples are helpful in proving the above fact:
- Oxygen which is an excretory product of photosynthesis is an absolute requirement for human beings to survive on Earth.
- Tannin is a waste plant product which is stored in leaves and bark. it is used in making tea all over the world.
- Plants store waste products in their leaves and bark which are shed off regularly. These shed-offs are used to make manure.
- Gum and resin are waste materials for plants but they have various uses for man.
- Essential oils are also waste products of plants which are stored in their leaves. These essential oils are used for various purposes by us.
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संबंधित प्रश्न
Explain the term haemodialysis.
State whether the following statement is true or false:
Some organisms store wastes in body parts.
What does the bladder in our body do?
What is meant by dialysis?
If a patient is out on dialysis, he is most likely suffering from a severe ailment of the ______.
Why is excretion necessary in living beings?
Why is it necessary to maintain a normal osmotic concentration of the blood?
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1 to 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:
Where does ultrafiltration take place?
Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:
Mention two functions of the kidney.
Differentiate between:
Ureter and Urethra.
Name the Following
The Inner concave margin of kidney.
Name the Following
The substance found in excess in the urine of a diabetic patient.
Complete the following sentence with appropriate word:
The sum total of all the chemical reactions taking place in the cell is known as ______.
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:
Besides excretion, the kidneys also carry out the important function of ______.
Choose the correct option.
Which one of the following organisms excrete waste through nephridia?
Osmoregulation maintains the osmolarity of blood at about ______.
The product of the process of deamination is ______.
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
