2006-11-13 02:05:38 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Botany
The basic problem for trees surviving the winter in colder climates is that the water they need for transporting nurishment freezes. There are two ways that trees survive through the winter:
1)Deciduous trees: They basically go into hibernation for the winter. They loose there leaves and have buds ready to go the next year. So they to not need the excess nurishment durning the colder months.
2) Evergreen Trees have leaves that are adapted to retainng water during the cold months either a waxy film or by shape.
Both types keep the truncks of the tree from cracking because of freezing sap by creating more sugars in the sap which causes the freezing point of the sap to drop.
2006-11-13 02:53:39 · answer #1 · answered by iamme 2 · 1⤊ 0⤋
Some of them do, if they're planted in the wrong zone or location. Ideally, a tree senses cool weather coming, often just by the hours of daylight. Sap flow slows way down and the tree goes into dormancy. If the tree gets too warm on a sunny winter day, the sap could start flowing again, then it'll freeze and burst that part of the tree as soon as the temperature drops again.
2006-11-13 10:15:09 · answer #2 · answered by Kacky 7 · 1⤊ 0⤋
The ones that don't the saps recedes into the roots in cold weather so it won't free. There are trees in the tropical and semi tropical zone that will freeze because the sap doesn't come down.
Isn't natrual selection great?
2006-11-13 14:26:51 · answer #3 · answered by Everyman 3 · 0⤊ 0⤋
the bark on them is like a shell that protects the inner core
2006-11-13 10:07:26 · answer #4 · answered by chexmix 4 · 0⤊ 1⤋
they do.. that's why they loose their leaves and some branches during winter...But they are also like phoenix, they rise from their ashes...
2006-11-13 10:13:31 · answer #5 · answered by Dahlia O 4 · 0⤊ 0⤋