What are phytohormones? List some plant hormones and give their role
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Plant hormones (also known as phytohormones) are organic substances that regulate plant growth and development. Plants produce a wide variety of hormones, including auxins, gibberellins (GA), abscisic acid (ABA), cytokinins (CK), salicylic acid (SA), ethylene (ET), jasmonates (JA), brassinosteroids (BR), and peptides.
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ᴘʟᴀɴᴛ ʜᴏʀᴍᴏɴᴇs (ᴀʟsᴏ ᴋɴᴏᴡɴ ᴀs ᴘʜʏᴛᴏʜᴏʀᴍᴏɴᴇs) ᴀʀᴇ ᴏʀɢᴀɴɪᴄ sᴜʙsᴛᴀɴᴄᴇs ᴛʜᴀᴛ ʀᴇɢᴜʟᴀᴛᴇ ᴘʟᴀɴᴛ ɢʀᴏᴡᴛʜ ᴀɴᴅ ᴅᴇᴠᴇʟᴏᴘᴍᴇɴᴛ. ᴘʟᴀɴᴛs ᴘʀᴏᴅᴜᴄᴇ ᴀ ᴡɪᴅᴇ ᴠᴀʀɪᴇᴛʏ ᴏғ ʜᴏʀᴍᴏɴᴇs, ɪɴᴄʟᴜᴅɪɴɢ ᴀᴜxɪɴs, ɢɪʙʙᴇʀᴇʟʟɪɴs (ɢᴀ), ᴀʙsᴄɪsɪᴄ ᴀᴄɪᴅ (ᴀʙᴀ), ᴄʏᴛᴏᴋɪɴɪɴs (ᴄᴋ), sᴀʟɪᴄʏʟɪᴄ ᴀᴄɪᴅ (sᴀ), ᴇᴛʜʏʟᴇɴᴇ (ᴇᴛ), ᴊᴀsᴍᴏɴᴀᴛᴇs (ᴊᴀ), ʙʀᴀssɪɴᴏsᴛᴇʀᴏɪᴅs (ʙʀ), ᴀɴᴅ ᴘᴇᴘᴛɪᴅᴇs.
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