BrahMos WORLD INDIA MADHYA PRADESH BHOPAL SPORTS BUSINESS FUN FACTS ENTERTAINMENT LIFESTYLE TRAVEL ART & LITERATURE SCIENCE & TECHNOLOGY HEALTH EDUCATION DIASPORA WTN SPECIAL OPINION & INTERVIEW GOSSIP CORNER RECIPES DRINKS BIG MEMSAAB 2017 BUDGET 2017 FUNNY VIDEOS VIRAL ON WEB PICTURE STORIES Mahakal Ke Darshan
ABOUT US PRIVACY POLICY SITEMAP CONTACT US
logo

Breaking News

Why do leaves change colour

Monday - March 27, 2017 11:04 am , Category : Fun Facts
Leaves change colour
Leaves change colour

As days grow shorter and temperatures reduces, deciduous trees prepare for winter dormancy .Lacking sufficient light and water, photosynthesis shuts down, and trees must live off food stored during the season.
In spring, leaves lay the ground-work for their demise .A special layer of cells forms at the base of each other leaf, called the abscission or separation layer. Its work is to transport water to the leaf and take food, created by photosynthesis, back to the tree.
In autumn, the cells of this layer begin to swell and the bottom of this layer forms a corklike substance that eventually cuts off all transfer between leaf and tree. Meanwhile, the top of the layer begins to disintegrate, making it easy for the leaf to detach.
As photosynthesis ceases, the leaves lose their chlorophyll, which gives them their green color. Without chlorophyll, other color emerges. Yellow and orange, for example, are normally present in the leaved but are overshadowed by chlorophyll.  
Maple-leaf red occurs because glucose remains when photosynthesis shuts down. Drab oak-leaf brown represent wastes left in the leaves.

Window To News 

www.windowtonews.com
Leave a Comment
* Name
* Email (will not be published)
*
* - Required fields
 

RELATED NEWS