write an activity to explain chlorophyll is necessary for photosynthesis
Answers
Answer:
Dip the leaf in boiling water for a few minute. Now boil the leaf in 70% alcohol till it decolorizes. ... This shows that starch formation takes place only in green (chlorophyll containing) parts of the leaf. Thus, the chlorophyll is essential for photosynthesis
Answer:
To show that chlorophyll is necessary for photosynthesis :
Procedure :
(i) Take a plant with variegated leaves which has chlorophyll only in patches. Such leaves can be found in plants like Coleus, Tradescantia and Croton.
(ii) Destarch its leaves by placing the plant in dark for 2-3 days.
(iii) Place the plant again in day light for 4-6 hours. Test a leaf for the presence of starch.
Observation :
Only the parts which were green previously, turn blue-black with iodine.
Conclusion :
This shows that chlorophyll is necessary for photosynthesis.
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