Question

how can a floating ponds plant, such as duckweed, survive without having its roots in soil?

Answer 1

ʜᴇʀᴇ'ꜱ yᴏᴜʀ ᴀɴꜱᴡᴇʀ

Unsurprisingly, floating pond plants float atop the open water and do not require soil for their roots. As all or most of the plant is beneath the surface, oxygen is released directly into the water through photosynthesis during the day.

ʜᴏᴩᴇ ɪᴛ'ꜱ ʜᴇʟᴩ ᴜʜʜ :)

ᴍᴀʀᴋ ᴍy ᴀɴꜱᴡᴇʀ ᴀꜱ ʙʀᴀɪɴʟɪꜱᴛ