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प्रश्न
Name a waste gas released by the plants only during the daytime.
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उत्तर
Oxygen is released only during the daytime. This is because oxygen is produced by photosynthesis only in the presence of sunlight.
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संबंधित प्रश्न
Why is it necessary to excrete waste products?
Give biological reasons for the following statements: There is frequent urination in winter than in summer
Draw the well-labelled diagram of the human excretory system
What gaseous waste products are excreted by plants?
Where is the dirty blood in our body filtered?
Fill in the following blank with suitable word:
Bowman's capsule and tubule taken together make a..........
A dialysis machine contains long tubes coiled in a tank containing dialysing solution
What does the dialysing solution contain?
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
Given below is a set of five terms. Rewrite the terms in their correct order so as to be in logical sequence.
Afferent arteriole, renal vein, secondary capillary network, glomerulus, efferent arteriole.
If you donate one kidney to a needy patient, would it cause any harm to you? Give reason.
In summer the urine is slightly thicker than in winter explain the reason.
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.
Label the diagram given below :
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 (normally) contains the lowest concentration of glucose?
Given below is a highly simplified diagram of the human kidney cut open longitudinally. Answer the question that follow:
Mention two functions of the kidney.
Study the diagram given below and then answer the questions that follow:
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- Name the region in the kidney where the above structure is present?
- Name the parts labelled 1, 2, 3 and 4.
- Name the stages involved in the formation of urine.
- What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.
Complete the following sentence with appropriate word:
Human kidney is made up of ______.
In a person the tubule part of the nephron is not functioning at all. What will its effect be on urine formation?
