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प्रश्न
Complete the following paragraph by filling in the blank (1) to (5) with appropriate words:
To test a leaf for starch, the leaf is boiled in water to (1) _________. It is then boiled in Methylated spirit to (2) ________. The leaf is dipped in warm water to soften it. It is placed in a petri dish, and (3) _____ solution is added. The region of the leaf which contains starch, turns (4) ________and the region while does not contain starch, turns (5) __________.
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उत्तर
1) to kill the cells
2) remove the chlorophyll
3) Iodine solution
4) blue-black in colour
5) brown
APPEARS IN
संबंधित प्रश्न
Fill in the blank:
Xanthophyll is ______ coloured pigment.
Fill in the blank:
CO2 enters the leaf through ______.
Name the following:
The first form of food substance produced during photosynthesis.
Mention one difference between the following on the basis of what is given in bracket.
Producers and consumers (mode of nutrition)
Identify the false statement and rewrite it correctly by changing the first or last word only.
Green plants perform photosynthesis.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
What aspect of photosynthesis was being investigated?
Photosynthesis is considered as a process supporting all life on earth.
State whether true or false. If false, correct the statement.
Plants lose water when the stomata on leaves are closed.
Sunflowers open the petals in bright light during the daytime but close the petals in dark at night. This response of sunflowers is called ______.
Distinguish between the following pairs on the basis of the word indicated in the bracket ( ).
Producers and Consumers (organisms)
