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प्रश्न
Leaves of a healthy potted plant were coated with vaseline. Will this plant remain healthy for long? Give reasons for your answer.
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उत्तर
Coating vaseline to the leaves of a healthy plant will close its stomata pores and stop the respiration of plants and the plants die.
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संबंधित प्रश्न
The kidneys in human beings are a part of the system for ______.
Match structures given in Column I with functions given in Column II.
| Column I | Column II | ||
| (i) | Stomata | (a) | Absorption of water |
| (ii) | Xylem | (b) | Transpiration |
| (iii) | Root hairs | (c) | Transport of food |
| (iv) | Phloem | (d) | Transport of water |
| (e) | Synthesis of carbohydrates |
Name the Following
The organ which produces urea.
Blood in the renal artery or renal vein (Which one has more urea ?)
Where is the dirty blood in our body filtered?
State if the following statement is true or false. Correct the statement if it is false.
Liver produces bile pigments from the hemoglobin of broken RBCs.
Differentiate between
excretion and transpiration
Why is it necessary to maintain a normal osmotic concentration of the blood?
What is dialysis? Under what condition is it carried out?
Choose the correct answer:
A condition of failure of kidney to form urea is called ____________
Study the diagram given alongside and then answer the question that follow:
What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.
Explain the functioning of kidney.
Choose the Odd One Out:
Choose the correct option.
Which one of the following organisms would spend maximum energy in the production of nitrogenous waste?
Choose the correct option.
Specific gravity of urine would _______ if level of ADH increases.
The tadpole of frog lives in water, hence its mode of excretion is ______.
In order to maintain homeostasis or constant internal environment . ______' is essential.
Give two examples of the following:
Nitrogenous waste
