Question

ACTIVITY NO. 1
Alm :To show the presence of starch in the leaves by the process of
photosynthesis
Matorial Required Test tube .bunsen burner given ethanol, red beaker, petri
dish iodine solution.
Theory:Green plants prepare their food by the process of photosynthesis. This food
is stored in the form of starch. Starch turns blue-black in colour in the presence of
lodine solution.
Procedure:
1. Dip a leaf into boiling water for about a minute (to soften it).
2. Tum off the burner
3. Put the leaf into the test tube filled with ethanol(to remove chlorophyll).
4. Stand the test tube in a beaker of hot water for about ten minutes.
5. Wash the leaf in the cold water.
6. Spread the leat out flat on a petri dish and cover it with lodine solution test for
starch).
Ethanol
Dolding
wa
DU
14
Turn bunson
Starch rest with
Iodine non
Observation: The leat goes blue-black.
Conclusion: Starch present in the leaf
please make a project and tell me fast​

Answer 1

TIVITY NO. 1

Alm :To show the presence of starch in the leaves by the process of

photosynthesis

Matorial Required Test tube .bunsen burner given ethanol, red beaker, petri

dish iodine solution.

Theory:Green plants prepare their food by the process of photosynthesis. This food

is stored in the form of starch. Starch turns blue-black in colour in the presence of

lodine solution.

Procedure:

1. Dip a leaf into boiling water for about a minute (to soften it).

2. Tum off the burner

3. Put the leaf into the test tube filled with ethanol(to remove chlorophyll).

4. Stand the test tube in a beaker of hot water for about ten minutes.

5. Wash the leaf in the cold water.

6. Spread the leat out flat on a petri dish and cover it with lodine solution test for

starch).

Ethanol

Dolding

wa