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प्रश्न
How do guard cells regulate opening and closing of stomatel pores?
उत्तर
When water flows into the guard cells, they swell and become curved. This causes the stomatal pore to open. On the other hand, when the guard cells lose water, they shrink and this cause the pore to close.
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संबंधित प्रश्न
What are the necessary conditions for autotrophic nutrition?
In addition to carbon dioxide and water, state two other conditions necessary for the process of photosynthesis to take place.
The leaves of a plant first prepare food A by photosynthesis. Food A then gets converted into food B. What are A and B?
Which substance is used to remove chlorophyll from a green leaf during photosynthesis experiments?
What are autotrophs? Give one example of autotrophs.
Photosynthesis converts energy X into energy Y. What are X and Y?
State the various steps involved in the process of photosynthesis.
When carrying out the starch test on a leaf, why is it important to boil the leaf in alcohol?
(a) to dissolve the waxy cuticle
(b) to make the cells more permeable to iodine solution
(c) to remove the chlorophyll
(d) to stop chemical reactions in the cells.
The oxygen liberated during photosynthesis by green plants comes from:
(a) glucose
(b) water
(c) carbon dioxide
(d) chlorophyll
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
Which of the following statements shows the correct results of Iodine Test performed on the leaf from plant X and Y respectively?
