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प्रश्न
What are the methods used by plants to get rid of their waste products?
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उत्तर
Following are the various methods used by plants to get rid of their waste products.
- The gaseous wastes are removed through stomata in leaves and lenticels in stems.
- Some wastes are removed in the form of gums and resins.
- Some of the waste products are excreted into the soil around them.
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संबंधित प्रश्न
Explain the term haemodialysis.
_____________ 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) ______________.
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.
Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form.
Urine is devoid of blood cells.
Tick the most appropriate answer.
The process of removing waste from the body is called
Differentiate between
tannins and resins
Differentiate between the following pairs of term :
Renal cortex and renal medulla
Differentiate between the following pairs of term :
Renal pelvis and renal papilla
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 lowest concentration of urea?
Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:
Name the functional units of the kidneys.
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: Vasopressin
Choose the Odd One Out:
Choose the correct option.
Visceral layer : Podocytes :: PCT : ________.
Certain organisms that are aquatic in habitat, tolerate only a narrow range of salinity. What term is given to such animals?
Give two examples of the following:
Water-soluble vitamins
An organ that produces urea:
The statement given below is false. Rewrite the correct form of the statement by changing the underlined word.
The pigment urochrome is the breakdown product of the haemoglobin of dead RBCs.
