No not a plant.
Image is somewhat magnified but not significantly.

So let see It again and think ....

A worm type sea creature?

Or part of a plastic or glass container for pouring water to flower pots ?!

No Arthur. Not a living being.

Mo: You are on a very right tract but not a pot and yes, it is made up of plastic.

Some thing for lubricating , containing low viscosity oil ! ?

Not to lubricate or not an oily fluid container but surely viscose.
Continue and you are almost there.
Clue: It is an item from Kitchen!

Honey container ?

Not Honey. Color of liquid is Green.

is it a spout for a fancy teapot?