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प्रश्न
Name a waste gas released by the plants only during the night time.
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उत्तर
Carbon dioxide is released only during the night because carbon dioxide produced during respiration in completely used up by the plant itself in photosynthesis.
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संबंधित प्रश्न
What are the methods used by plants to get rid of excretory products?
Why is it necessary to excrete waste products?
Name a waste gas released by the plants only during the daytime.
State whether the following statement is true or false:
Some organisms store wastes in body parts.
A dialysis machine contains long tubes coiled in a tank containing dialysing solution Of what substance are the tubes made?
What are the methods used by plants to get rid of their waste products?
Given below is a simplified diagram of the human kidney cut open longitudinally. Answer the questions that follow.
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- Define excretion.
- Why does the cortex of the kidney show a dotted appearance?
- Why does the medulla of the kidney show a striped appearance?
- Write two differences in the composition of the blood flowing through the blood vessels 'A' and 'B'.
Choose the correct answer:
Composition of extracellular fluid is regulated by ___________
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:
Why does the cortex of the kidney show a dotted appearance?
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?
Name the Following
The structural and functional units of kidney
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 ______.
Write the functional activity of the following structure: Nephron
Choose the Odd One Out:
Choose the correct option.
Which one of the following organisms excrete waste through nephridia?
Complete the diagram/chart with correct labels/ information. Write the conceptual details regarding it.
If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring? Justify your answer.
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.
