describe an experiment to show that plant need sunlight
Answers
Answer:
To prove the necessity of sunlight in photosynthesis following steps need to do
Take a plant with destarched leaf.
Leaf is partially covered with black paper on which a design is cut.
Expose this plant to sunlight for few hours and perform a starch test with iodine solution.
Observation-
Covered leaf part shows brown colouration.
Exposed leaf shows blue-black colour.
Result- Starch is present in the exposed leaf.
Conclusion- Leaf exposed to sunlight give iodine test, proving that sunlight is necessary for photosynthesis.
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Answer:
keep a plant in a dark room where no sunlight reaches for a week and keep another plant in sunlight treat both the plants properly and equally as done .
Explanation:
You will see the plant in the darker room dies and the one in the sunlight gets a growth though both the plants were treated equally .This shows plants need sunlight .Hope it helps