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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
_____________ secreted by the (ii) _____________ lobe of the pituitary gland. If this hormone secretion is reduced, there is an increased production of urine. This disorder is called (iii) ____________. Sometimes excess glucose is passed with urine due to hyposecretion of another hormone called (iv) _____________ leading to the cause of a disease called (v) ______________.
Identify the odd one.
Why do some people need to use a dialysis machine? What does the machine do?
Name the main nitrogenous waste in the human blood. How is it removed from the blood?
Differentiate between
excretion and transpiration
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?
Answer the following question:
Explain the human excretory system with the help of a suitable diagram.
Differentiate between:
The Renal artery and the Renal vein.
Explain the Term: Glomerulus
Name the Following
The division of the kidney which is light in colour and subdivided into conical renal pyramids.
Give Technical Term:
The organ which filters out urea and uric acid from the bloodstream.
Write the functional activity of the following structure: Nephron
Choose the Odd One Out:
Choose the Odd One Out:
Answer the following question.
Name any one guanotelic organism.
Complete the diagram/chart with correct labels/ information. Write the conceptual details regarding it.
The mode of excretion of nitrogenous wastes like ammonia which takes place by simple diffusion is called ______.
In order to maintain homeostasis or constant internal environment . ______' is essential.
If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring? Justify your answer.
Give reason:
Excretion is a necessary process of our body.
