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प्रश्न
Explain the importance of soil for plant growth.
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उत्तर
Soil is very important for the growth of the plant for the following reasons -
- Soil provides the base for the growth of the plants and provides a platform for the penetration of roots.
- It acts as a reservoir of the water.
- Soil has different minerals essential for the growth of the plant. Soil is the only medium from which soil obtains nutrients.
- Soil has organic materials essential for the growth of the plants.
- Soil has microorganisms that have a symbiotic relationship with the plant and these microbes assist the plant in their growth and life processes.
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संबंधित प्रश्न
the Biological/technical term Pigment providing colour to urine.
Why do some people need to use a dialysis machine? What does the machine do?
Fill in the blank :
Nitrogenous wastes in the urine are in the form of urea and .....................
Fill in the blank.
.................. produces bile pigments from the heamoglobin of broken RBCs.
Differentiate between
tannins and resins
Name the following:
The tuft of capillaries inside the Bowman's capsule.
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.
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?
Study the diagram given alongside and then answer the question that follow:
Name the stages involved in the formation of urine.
The diagram below represents a mammalian kidney tubule (nephron) and its blood supply. Parts indicated by the guidelines 1 to 8 are as follows:
1. U-shaped loop of Henle
2. Proximal convoluted tubule with blood capillaries
3. Bowman’s capsule
4. Afferent arteriole from the renal artery
5. Glomerulus
6. Venule to the renal vein
7. Collecting tubule
8. Distal convoluted tubule with blood capillaries Study the diagram and answer the following questions in each case:
(i) Where does ultrafiltration take place?
(ii) Which structure contains the lowest concentration of urea?
(iii) Which structure contains the highest concentration of urea?
(iv) Which structure contains the lowest concentration of glucose?
(v) Where is the most water reabsorbed?
Give Technical Term:
The tube joining the kidney to the urinary bladder.
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:
The knot of blood vessel inside the Bowman’s capsule is ______.
Write the functional activity of the following structure: Nephron
Answer the following question.
Birds are uricotelic in nature. Give reason.
Identify the INCORRECT match.
When uric acid is produced in excess, it gets deposited in joints, resulting in ____________.
What is the purpose of making urine in the human body?
Give two examples of the following:
Nitrogenous waste
