How are young plants supported ?
a) the pressure of water inside the cells pressing outwards on the cell membrane
b) the pressure of water inside the cells pressing outwards on the cell walls
c) the pressure of water passing from the roots through the phloem
d) the pressure of water passing from the roots through the xylem

Pressure of water passing from thw roots.

Explanation:

B) The pressure of water inside the cells pressing outwards on the cell walls.

Water potential is crucial for the plants as it is involved in the movement of water and other solutes throughout the plant. The pressure generated by water is also responsible for providing support to the plants.

The water present inside the cells puts pressure outwards on the cell membrane. This pressure from the inside of the cell to the cell membrane provides support to the young plants.

The water potential in the roots and stems allows for solutes to pass through the xylem and pholem, but is not responsible for the support to the plant.

Hence, the correct answer is option a.

feral cats are estimated to eat tens of millions of native animals each night in australia

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.