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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
The given diagram represents a nephron and its blood supply. Study the diagram and answer the following questions:
(i) Label parts 1, 2, 3 and 4.
(ii) State the reason for the high hydrostatic pressure in the glomerulus.
(iii) Name the blood vessel which contains the least amount of urea in this diagram.
(iv) Name the two main stages of urine formation.
(v) Name the part of the nephron which lies in the renal medulla.
What job is done by the kidneys?
What does the bladder in our body do?
What are the methods used by plants to get rid of their waste products?
Tick the most appropriate answer.
The process of removing waste from the body is called
Tick the most appropriate answer.
Quinine is used in the treatment of
Fill in the blank.
Malpighian body consists of Bowman’s capsule and .....................
Study the diagram given alongside and then answer the question that follow:
Name the region in the kidney where the above structure is present?
Given below is a diagram of a human kidney, cut open longitudinally. Answer the following:
(i) Give definition of excretion.
(ii) Name the unit of kidney.
(iii) Why does the cortex of kidney show dotted appearance?
(iv) List the functions of the kidney.
Draw a labeled diagram of the human kidney as seen in a longitudinal section.
Complete the following sentence with appropriate word:
Human kidney is made up of ______.
Answer the following question.
Why do we get bad breath after eating garlic or raw onion?
Answer the following question.
Amphibian tadpole can afford to be ammonotelic. Justify.
The product of the process of deamination is ______.
Among the following animals, the best conserver of water is ______.
Give two examples of the following:
Nitrogenous waste
Give two examples of the following:
Bile pigments
Give reason:
Excretion is a necessary process of our body.
