NATURE: March 2005 >

NATURE

Sunday, March 27, 2005

How are seedless grapes grown?
Since seedless grapes cannot reproduce in the conventional way that grapes usually do (i.e., dropping seeds), growers have to take cuttings from other seedless grape plants and root them. Although the exact origin of seedless grapes is unknown, they might have been first cultivated in present-day Iran or Afghanistan thousands of years ago. Initially the first seedless grape was a genetic mutation in which the hard seed casing failed to develop—the mutation is called stenospermoscarpy. One modern seedless grape commonly bought today is the green Thompson seedless grape, from which 90% of all raisins are made.


Tranquil Posted by Hello

What is a five-in-one-tree?
These very curious trees consist of a rootstock with five different varieties of the same fruit—usually apples—grafted to it. The blooming period is usually magnificent with various colors of blooms appearing on the same tree.

Tuesday, March 22, 2005


Hehe,this is fallen leaves Posted by Hello


Red leaves Posted by Hello


Yellow leaves Posted by Hello


Orange leaves Posted by Hello

Why do tree leaves turn color in the fall?
The carotenoids, which are responsible for the fall colors, are present in the leaves during the growing season. However, the colors are eclipsed by the green chlorophyll. Toward the end of summer, when the chlorophyll production ceases, the other colors of the carotenoids (such as yellow, orange, red, or purple ) become visible. Listed below are the autumn leaf colors of some common trees.

Monday, March 14, 2005

What is the tallest tree?
The tallest tree ever measured was the Australian eucalyptus (Eucalyptus regnans) at Watt River, Victoria, Australia. In 1872 it was reported to measure 435 feet (132 meters) tall and it was most likely over 500 feet (152 meters) originally. The tallest living tree is coast redwood (Sequoia sempervirens) in Redwood national Park, California, named the National Geographic Society. In October 1991 it was measured at 365 feet (111 meters).
What flowers are designated as symbolic of each month of the year?
January ----Carnation
February ----Violet
March ----Jonquil
April ----Sweet Pea
May ----Lily of the Valley
June ----Rose
July---- Larkspur
August ----Gladiola
September ----Aster
October ----Calendula
November ----Chrysanthemum
December ----Narcissus

Friday, March 04, 2005


Winter Posted by Hello

Thursday, March 03, 2005


Autumn Posted by Hello


Summer Posted by Hello


Spring Posted by Hello

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Location: Montreal, Q.C, Canada

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