Test: Nutrition In Plants

5 Questions MCQ Test Science Class 10 | Test: Nutrition In Plants

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The opening and closing of stomata is controlled by:


Stomata closed by guard cell and it regulate opening and closing of stomata. When stomata swell up when water is full and guard cell open that's why opening of stomata. When water release from stomata then guard cell shrink that's why closing of stomata.


The stomatal pore opens when:


The swelling of guard cells due to absorption of water causes opening of stomatal pores while shrinking of guard cells closes the pores. Opening and closing of stomata occurs due to turgor changes in guard cells. When guard cells are turgid, stomatal pore is open while in flaccid conditions, the stomatal aperture.


During photosynthesis, light energy from the sun is absorbed by:


Chlorophyll is a green coloured photosynthesis pigment occurs in chloroplast. It is site where photosynthesis take place. It traps solar energy and changes it into chemical energy.


A minute pore which helps in exchange of gases is:


The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma).
The pores through which leaves exchange gases are STOMATA


Chlorophyll is found in oval-shaped structures called as


The 'chlorophyll' is found in the oval shaped structures known as Chloroplast.

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