How do plants survive in severe winter?

Question

As temperature falls below 0 in canada and many places, water in the cells should also be frozen so how do plants again become green insummer.
2ndly some bacteria survive even in boiling water, how do they survive?

Answer 1

The freezing point of water is depressed, as the solute concentration increases in the solution.This property is judiciously exploited by plants, as generally the intracellular material and sap are thick and concetrated solutions.Membrane stabilization and accumulation of osmolytes and antifreeze have also known to play an important role in the survival of plants at low temperature.Dehydration of cells is also seen.

well now about bacteria.

micro-organisms, can grow n divide in a range of temperature.thus there are basically 3 categories -- psychrophiles, mesophiles and thermophiles. thermophiles and hyperthermophiles can generally tolerate temperatures above 60C.
Many adaptations are present which allow them to grow at these temperatures.
There is difference in the membrane proteins present (hydrophobic proteins generally present), membrane lipids n structure, heat stable enzymes and proteins, DNA binding proteins which stabilise it at high temperature and prevent it from melting.

consequently they are able to metabolise and grow at such high temperature also.

hope this helps.....

Answer 2

the root system of the plant doesnt die because of the warmth in the gound. Some plants have a sap system that is very thick and doesnt freeze as easy as water does and then some trees drop the sap back to the ground when it get cold so the tree is very dry at that time of year. They are green again mostly by regrowth and new growth on old stems.

I dont know any bacteria that will survive in bloiing water. That is how things are pasterized. If bacteria survive then the pasteration wouldnt work

Answer 3

Only certain species of Fir Tree, Spruces, and Pines can withstand a severe blizzard. Some Conifers have adapted to being blugend by frequent blizzards. There branches are adapted to holding snow without weighing down and crushing the tree. So basically some trees are well suited for severe winters.

Answer 4

Freezing injury occurs below 0oC, when ice forms in intercellular spaces, which can cause physical disruption of cells and severe cellular dehydratation. The ability of some plants to cope with freezing stress is based on:
- membrane stabilization
- accumulation of osmolytes and antifreeze proteins and
- induction of genes for fatty acid desaturases, chaperones, lipid transfer proteins, and dehydrins

Answer 5

try freezing water that is super saturated with sugar. plants pack each cell with so much solute (sugar etc) that they don't freeze. they basically dehydrate themselves until warmer conditions. some plants (subalpine conifers) can withstand liquid nitrogen temperatures (-196*C).

the bacteria have built proteins that don't unfold when in hot conditions (like an egg does). this is why to completely sterilize something, you must "autoclave" it. this is ultra hot steam.

Answer 6

yep,,, warm roots and sap.... winning cold combination.

and i believe you do not mean to say bacteria,,, bacteria will not survive in boiling water,,,, but there are viruses that will....
and they each will have there own means to do this. from curling into a ball and drying themselves up, to just plain tough.

Answer 7

The plants have adopted to their environment. Dont know the second ?

Answer 8

Good Question

Answer 9

They just are able to be asleep in a sense! Some plants won't live! If it gets so cold they die!

Answer 10

I pamper them secretly