what is double fertilisation in plants
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the pollen grain consists of two male gamates and one vegetative cell.when the pollen grain reaches the stigma, the vegetative cell grows into a tube to reach the ovule in ovary.the two male gamates passes fr this tube to reach the ovule one male gamate fuses with the egg to form embryo and the other male gate fuses with the polar nuclei to.form endosperm.due to the fusion of two male gamates with different things in ovule it is known as double fertilisation.
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Dᴏᴜʙʟᴇ ғᴇʀᴛɪʟɪsᴀᴛɪᴏɴ :
Pᴏʟʟᴇɴ ᴛᴜʙᴇ ʀᴇʟᴇᴀsᴇs 2 ᴍᴀʟᴇ ɢᴀᴍᴀᴛᴇ ɪɴ ᴄʏᴛᴏᴘʟᴀsᴍ ᴏғ sʏɴᴇʀɪᴅs.
❇️ Oɴᴇ ᴍᴀʟᴇ ɢᴀᴍᴀᴛᴇ ғᴜsᴇs ᴡɪᴛʜ ᴇɢɢ ᴄᴇʟʟ ᴛᴏ ғᴏʀᴍ ᴢʏɢᴏᴛᴇ ➡️ sʏɴᴀɢᴀᴍʏ
❇️ ᴀɴᴏᴛʜᴇʀ ᴍᴀʟᴇ ɢᴀᴍᴀᴛᴇ ᴍᴏᴠᴇ ᴛᴏᴡᴀʀᴅs 2 ᴘᴏʟᴀʀ ɴᴜᴄʟᴇɪ ʟᴏᴄᴀᴛᴇᴅ ɪɴ ᴛʜᴇ ᴄᴇɴᴛʀᴀʟ ᴄᴇʟʟ ᴀɴᴅ ғᴜsᴇs ᴡɪᴛʜ ᴛʜᴇᴍ ᴛᴏ ᴘʀᴏᴅᴜᴄᴇ ᴛʀɪᴘʟᴏɪᴅ ᴘʀɪᴍᴀʀʏ ᴇɴᴅᴏsᴘᴇʀᴍ ɴᴜᴄʟᴇᴜs.
As ᴛʜɪs ɪɴᴠᴏʟᴠᴇs ғᴜsɪᴏɴ ᴏғ ᴛʜʀᴇᴇ ʜᴀᴘʟᴏɪᴅ ɴᴜᴄʟᴇɪ ɪᴛ ɪs ᴛᴇʀᴍᴇᴅ ᴛʀɪᴘʟᴇ ғᴜsɪᴏɴ.
Sɪɴᴄᴇ 2 ᴛʏᴘᴇ ᴏғ ғᴜsɪᴏɴ, sʏɴᴀɢᴀᴍʏ ᴀɴᴅ ᴛʀɪᴘʟᴇ ғᴜsɪᴏɴ ᴛᴀᴋᴇ ᴘʟᴀᴄᴇ ɪɴ ᴀɴ Eᴍʙʀʏᴏ sᴀᴄ ᴛʜɪs ɪs ᴛᴇʀᴍᴇᴅ ᴀs ᴅᴏᴜʙʟᴇ ғᴇʀᴛɪʟɪsᴀᴛɪᴏɴ.
ᗷᗴ ᗷᖇᗩIᑎᒪY !
TᕼᗩᑎK ᑌ :-)
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