Question

What is the function of exine and intine ?

Answer 1

…ʟᴀʏᴇʀs ᴛʜᴇ ɪɴᴛɪɴᴇ ᴀɴᴅ ᴛʜᴇ ᴇxɪɴᴇ. ᴛʜᴇ ɪɴᴛɪɴᴇ, ᴏʀ ɪɴɴᴇʀ ʟᴀʏᴇʀ ᴄᴏɴsɪsᴛs ᴘʀɪᴍᴀʀɪʟʏ ᴏғ ᴄᴇʟʟᴜʟᴏsᴇ ᴀɴᴅ ᴘᴇᴄᴛɪɴs.

ᴛʜᴇ ᴇxɪɴᴇ, ᴏʀ ᴏᴜᴛᴇʀ ʟᴀʏᴇʀ, ɪs ᴄᴏᴍᴘᴏsᴇᴅ ᴏғ ᴀ ʜɪɢʜʟʏ ᴅᴇᴄᴀʏ-ʀᴇsɪsᴛᴀɴᴛ ᴄʜᴇᴍɪᴄᴀʟ ᴄᴀʟʟᴇᴅ sᴘᴏʀᴏᴘᴏʟʟᴇɴɪɴ.

ᴛʜᴇ ᴇxɪɴᴇ ᴜsᴜᴀʟʟʏ ʜᴀs ᴏɴᴇ ᴏʀ ᴍᴏʀᴇ ᴛʜɪɴ ᴀʀᴇᴀs, ᴏʀ ᴘᴏʀᴇs, ᴛʜʀᴏᴜɢʜ ᴡʜɪᴄʜ ᴛʜᴇ ᴘᴏʟʟᴇɴ ᴛᴜʙᴇs ɢᴇʀᴍɪɴᴀᴛᴇ, ᴀɴᴅ ᴛʜᴇ…

Answer 2

1. EXINE is the hard outer layer of pollen grain.
2. It is made up of sporopollenin which is one of the most resistant organic material known.

1.INTINE is the inner wall of the pollen grain.
2. It is thin and continous layer made up of cellulose and pectin