8. What activity do you follow in your laboratory to study the presence of starch in leaves ?
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ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ sᴛᴀʀᴄʜ ɪɴ ʟᴇᴀᴠᴇs ᴄᴀɴ ʙᴇ ᴛᴇsᴛᴇᴅ ʙʏ ᴛʜᴇ ɪᴏᴅɪɴᴇ ᴛᴇsᴛ. ᴡʜᴇɴ ᴡᴇ ʀᴇᴍᴏᴠᴇ ᴄʜʟᴏʀᴏᴘʜʏʟʟ ғʀᴏᴍ ᴛʜᴇ ʟᴇᴀғ ʙʏ ʙᴏɪʟɪɴɢ ɪᴛ ɪɴ ᴀʟᴄᴏʜᴏʟ ᴀɴᴅ ᴛʜᴇɴ ᴘᴜᴛ ᴛᴡᴏ ᴅʀᴏᴘs ᴏғ ɪᴏᴅɪɴᴇ sᴏʟᴜᴛɪᴏɴ, ɪᴛs ᴄᴏʟᴏᴜʀ ᴄʜᴀɴɢᴇ ᴛᴏ ʙʟᴜᴇ ɪɴᴅɪᴄᴀᴛᴇs ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ sᴛᴀʀᴄʜ.
★ ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ʏᴏᴜ ᴅᴇᴀʀ ★
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The presence of starch in leaves can be tested by the Iodine test. When we remove chlorophyll from the leaf by boiling it in alcohol and then put two drops of iodine solution, it is colour change to blue indicates the presence of starch
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