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प्रश्न
What are the methods used by plants to get rid of excretory products?
उत्तर १
Plants can get rid of excess of water by transpiration. Waste materials may be stored in the cell vacuoles or as gum and resin, especially in old xylem. It is also stored in the leaves that later fall off.
उत्तर २
- Photosynthetic and respiratory wastes such as oxygen and carbon dioxide are used for respiration and photosynthesis. Any excess is expelled through the stomata.
- Excess water is removed through the process of transpiration.
- Waste products may be stored in leaves, bark, or other parts of the plant, which later fall off, removing the waste from metabolically active areas.
- In some plants, metabolic by-products are stored as crystals.
- Several substances, such as resins, tannins, and alkaloids, such as morphine and quinine, are also plant wastes, although they benefit humans.
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संबंधित प्रश्न
Draw a diagram of the human excretory system and label the various parts.
Mention the exact location of the Prostate gland.
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.
Draw the well-labelled diagram of the human excretory system
Write the functions of Kidney
Define excretion
Name the two waste products of the human body which are produced in the body cells.
What do kidneys excrete?
Why do some people need to use a dialysis machine? What does the machine do?
Draw a neat labelled diagram of the human excretory system.
Describe the mechanism of urine formation in human excretory system. Draw a labelled diagram to illustrate your answer.
What is meant by dialysis? What type of patients are put on dialysis?
The procedure of cleaning the blood of a person by using a kidney machine is known as:
(a) ketolysis
(b) hydrolysis
(c) dialysis
(d) photolysis
Fill in the blank :
Nitrogenous wastes in the urine are in the form of urea and .....................
Why is excretion necessary in living beings?
Answer the following in short.
List five waste products of plants.
Name the following:
The tuft of capillaries inside the Bowman's capsule.
Differentiate between the following pairs of term :
Renal pelvis and renal papilla
What is dialysis? Under what condition is it carried out?
Choose the correct answer:
A condition of failure of kidney to form urea is called ____________
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?
Study the diagram given alongside and then answer the question that follow:
Name the stages involved in the formation of urine.
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 duct which transports urine from the kidney to the urinary bladder.
Complete the following sentence with appropriate word:
______ supplies blood to kidney.
Complete the following sentence with appropriate word:
Besides excretion, the kidneys also carry out the important function of ______.
State the Location: Renal pyramids
Write the functional activity of the following structure: Nephron
Write the functional activity of the following structure: Renal artery
Choose the correct option.
Visceral layer : Podocytes :: PCT : ________.
Choose the correct option.
Specific gravity of urine would _______ if level of ADH increases.
Identify the INCORRECT match.
Bilirubin and Biliverdin are pigments which are ____________.
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.
Given below is a list of substances - select the ones that need to be eliminated from the body.
Glucose, excess water, amino acids, urea, carbon dioxide, excess common salt, glycogen, uric acid.
The main nitrogenous waste formed in the human body:
