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प्रश्न
State the main function of the Guard cells
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उत्तर
Help to regulate the rate of transpiration by opening and closing of stomata
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संबंधित प्रश्न
The Biological/technical term for The process of uptake of mineral ions against the concentration gradient using energy from the cell
Fill in the blank with the suitable term given below:
The upward movement of sap that contains water and minerals is called _______ of sap.
Fill in the blank with the suitable term given below:
The leaves have more__________ on their lower surface.
is the following statement true (T) or false (F)? Mark T or F
‘Girdling experiment’ demonstrates food synthesis in plants.
Active transport is one in which the ions outside the roots are ___________.
Name the following:
Movement of ions from the region of lower concentration to higher concentration by using energy (ATP).
Identify the INCORRECT statement from the following.
In a passive transport across a membrane, when two different molecules move in opposite direction and independent of each other, it is called as ______.
Define the following term:
Active transport
Three cylinders of potato were carefully dried on blotting paper and weighed. Each piece weighed 3 grams. Each one was placed in the beaker as shown below:
Answer the following questions:
- After 48 hours, which potato cylinder would be the heaviest?
- The movement of which substance is mainly responsible for the weight change in the potato cylinders?
- Name and define the process which is responsible for the movement of the substance mentioned in answer (b).
- Write specific names of the processes which occur in beakers B and C. [kinds of processes defined in answer (c)].
- Would there be any difference in the weight of the potato cylinder in beaker A after 48 hours? Give reason.
