Question

xylem transports water and minerals in upwards direction only while phloem transports food in both directions. why?​

Answer 1

Answer:

xʏʟᴇᴍ ᴛʀᴀɴsᴘᴏʀᴛs sᴀᴘ ᴜᴘᴡᴀʀᴅs ᴏɴʟʏ ᴡʜᴇʀᴇᴀs ᴘʜʟᴏᴇᴍ ᴛʀᴀɴsᴘᴏʀᴛs ғᴏᴏᴅ ɪɴ ʙᴏᴛʜ ᴅɪʀᴇᴄᴛɪᴏɴs. ... xʏʟᴇᴍ ᴀɴᴅ ᴘʜʟᴏᴇᴍ ᴀʀᴇ ɪᴍᴘᴏʀᴛᴀɴᴛ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇʏ ᴛʀᴀɴsᴘᴏʀᴛ sᴜʙsᴛᴀɴᴄᴇs ᴛᴏ ᴘʟᴀɴᴛs. xʏʟᴇᴍ ᴛʀᴀɴsᴘᴏʀᴛs ᴡᴀᴛᴇʀ ᴀɴᴅ ɴᴜᴛʀɪᴇɴᴛs ғʀᴏᴍ ᴛʜᴇ ʀᴏᴏᴛs ᴛᴏ ᴀʟʟ ᴛʜᴇ ᴘᴀʀᴛs ᴀɴᴅ ᴘʜʟᴏᴇᴍ ᴛʀᴀɴsᴘᴏʀᴛs ғᴏᴏᴅ ғʀᴏᴍ ᴛʜᴇ ʟᴇᴀᴠᴇs ᴛᴏ ᴀʟʟ ᴘᴀʀᴛs ᴏғ ᴛʜᴇ ᴘʟᴀɴᴛ.

Answer 2

xylem only transports sap upwards where as phloem transfers food in both directions.