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प्रश्न
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.
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उत्तर
If a plant is releasing carbon dioxide and taking in oxygen during the day means the plant is respiring; it does not mean that there is no photosynthesis occurring in the plant. This is because Photosynthesis and respiration are two independent processes.
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संबंधित प्रश्न
Write the functions of the Urinary bladder
Define excretion. Name the excretory unit of a kidney.
The organs A of a person have been damaged completely due to which too much of a poisonous waste material B has started accumulating in his blood, making it dirty. In order to save this person's life, the blood from an artery in the person's arm is made to flow into long tubes made of substance E which are kept in coiled form in a tank containing solution F. This solution contains three materials G, H and I in similar proportions to those in normal blood. As the person's blood passes through long tubes of substance E, most of the wastes present in it go into solution. The clean blood is then put back into a vein in the arm of the person for circulation.
(a) What are organs A?
(b) Name the waste substance B.
(c) What are (i) E, and (ii) F?
(d) Name G, H and I.
(e) What is the process described above known as?
Why is excretion necessary in living beings?
Differentiate between
tannins and resins
Name the following:
The outer region of kidney containing the Bowman's capsule.
Look at the figure given below. It is a section of human kidney as seen from the front.
Which area/part (give its name and number given on the diagram) which contains the following:
(i) Malpighian capsule
(ii) The pyramids
(iii) Freshly collected urine
Explain the functioning of 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 words:
The outer surface of the kidney is ______ while the inner surface is ______.
Choose the correct option.
In human beings, uric acid is formed due to metabolism of ______.
Choose the correct option.
Specific gravity of urine would _______ if level of ADH increases.
Choose the correct option.
What is micturition?
The number of ATP molecules required to produce one molecule of urea from the omithine cycle.
Among the following animals, the best conserver of water is ______.
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
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.
