Because they are constantly under water. This is just how nature is. The plants probably have some special coating or something.
im sorry, wiki answers is not very smart at the moment. you can try Yahoo answers though. thank you :)
A person can not drown in one table spoon of water.
It depends on the plant if it is heavy it will sink but not drown if it is light it will float
not drown
a teaspoon of water
radish is a vegetable. Vascular plant have pipes to transport water and food. Non Vascular plants dont
Of course it can, water can drown a plant just like it can drown a human
you can drown it if you put too much water
dont put a fish in water
no because you could drown them
you can drown it if you put too much water
the hole traps the water and the plants wont drown
You wont drown unless you drink it wrong
Yes you can water your garden to much so be careful, you don't want to drown your plants.
I would advice you to put them in mild sunlight and don't water to feriously that will drown the plant, (and yes plants can drown)
good soil with a good water supply that will not drown them. They also need light
Yes, you can drown in any water.
No. Rice is grown in water, not barley. Barley plants will easily drown if grown in water, though with hydroponic agriculture, that could be a different story.