Why does auxin hormone move to shady region ?
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☛ Under normal light conditions auxins are spread out in the plant. But when sunlight varies, auxin is broken down on the sunnier side of the stem. The higher concentration of auxin on the shady side causes the plant cells on that side to grow more so it bends toward the light.
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ᴜɴᴅᴇʀ ɴᴏʀᴍᴀʟ ʟɪɢʜᴛ ᴄᴏɴᴅɪᴛɪᴏɴs ᴀᴜxɪɴs ᴀʀᴇ sᴘʀᴇᴀᴅ ᴏᴜᴛ ɪɴ ᴛʜᴇ ᴘʟᴀɴᴛ. ʙᴜᴛ ᴡʜᴇɴ sᴜɴʟɪɢʜᴛ ᴠᴀʀɪᴇs, ᴀᴜxɪɴ ɪs ʙʀᴏᴋᴇɴ ᴅᴏᴡɴ ᴏɴ ᴛʜᴇ sᴜɴɴɪᴇʀ sɪᴅᴇ ᴏғ ᴛʜᴇ sᴛᴇᴍ. ᴛʜᴇ ʜɪɢʜᴇʀ ᴄᴏɴᴄᴇɴᴛʀᴀᴛɪᴏɴ ᴏғ ᴀᴜxɪɴ ᴏɴ ᴛʜᴇ sʜᴀᴅʏ sɪᴅᴇ ᴄᴀᴜsᴇs ᴛʜᴇ ᴘʟᴀɴᴛ ᴄᴇʟʟs ᴏɴ ᴛʜᴀᴛ sɪᴅᴇ ᴛᴏ ɢʀᴏᴡ ᴍᴏʀᴇ sᴏ ɪᴛ ʙᴇɴᴅs ᴛᴏᴡᴀʀᴅ ᴛʜᴇ ʟɪɢʜᴛ.
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