Agriculture
Chicken Eggs as Drug Factories
Fast-flying fungal spores
Middle school science adventures
Amphibians
Bullfrogs
Salamanders
Salamanders and Newts
Animals
Who's Knocking?
Insects Take a Breather
Bee Disease
Behavior
Honeybees do the wave
Sugar-pill medicine
The Science Fair Circuit
Birds
Parrots
Pigeons
Eagles
Chemistry and Materials
The Incredible Shrunken Kids
Pencil Thin
These gems make their own way
Computers
Toxic Dirt + Avian Flu = Science Fair Success
Middle school science adventures
The solar system's biggest junkyard
Dinosaurs and Fossils
Mammals in the Shadow of Dinosaurs
The bug that may have killed a dinosaur
Have shell, will travel
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Earth
Polar Ice Feels the Heat
Science loses out when ice caps melt
Meteorites may have sparked life on Earth
Environment
An Ocean View's Downside
Forests as a Tsunami Shield
A Change in Climate
Finding the Past
Ancient Art on the Rocks
The Taming of the Cat
Words of the Distant Past
Fish
Nurse Sharks
Electric Eel
A Jellyfish's Blurry View
Food and Nutrition
Eat Out, Eat Smart
Chocolate Rules
The Color of Health
GSAT English Rules
Whoever vs. Whomever
Capitalization Rules
Pronouns
GSAT Exam Preparation Jamaica
42,000 students will sit for the GSAT Exam in two weeks
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
GSAT stars reap scholarship glory
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
GSAT stars reap scholarship glory
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Prime Time for Cicadas
Losing with Heads or Tails
GSAT Practice Papers | GSAT Mathematics | Maths
Human Body
Cell Phone Tattlers
Electricity's Spark of Life
Prime Time for Broken Bones
Invertebrates
Dragonflies
Leeches
Tarantula
Mammals
Donkeys
Sperm Whale
Tasmanian Devil
Parents
Expert report highlights the importance to parents of reading to children!
How children learn
Raise a Lifelong Reader by Reading Aloud
Physics
The Mirror Universe of Antimatter
Gaining a Swift Lift
Echoes of a Stretched Egg
Plants
White fuzzy mold not as friendly as it looks
When Fungi and Algae Marry
Assembling the Tree of Life
Reptiles
Sea Turtles
Gila Monsters
Chameleons
Space and Astronomy
A Whole Lot of Nothing
Mercury's magnetic twisters
Saturn's Spongy Moon
Technology and Engineering
Space Umbrellas to Shield Earth
Riding Sunlight
Machine Copy
The Parts of Speech
What is a Noun
Adjectives and Adverbs
Pronouns
Transportation
How to Fly Like a Bat
Robots on the Road, Again
Are Propellers Fin-ished?
Weather
The Best Defense Is a Good Snow Fence
A Dire Shortage of Water
Where rivers run uphill
Add your Article

Stalking Plants by Scent

Dodder is a wiry, orange vine that steals water and nutrients from other plants. Scientists have now found that this vine chooses its victim by smell, growing its shoots in the direction of a plant's natural perfume. When a dodder seed sprouts, it doesn't grow roots to seek its own food. Instead, it grows a shoot that reaches out to other plants, tapping them for food. The baby vine needs to find a host within a week to survive. It then grows into a spaghetti tangle that can even ensnare more than one plant. Also known as strangleweed and witches' shoelaces, dodders are listed among the 10 worst weeds in the United States. They can cost farmers millions of dollars by stunting their crops. To figure out how a type of dodder vine known to prefer tomato plants finds a victim, scientists placed dodder sprouts near several possible targets. These targets included pots of moist soil, little jars of dyed water that created colored lights, young tomato plants, and even a cup of perfume made from chemicals that tomato plants give off. Seedlings grew toward the tomato plant. They also reached out toward the cup of tomato perfume. They tended not to grow toward the moist soil or colored water. The scientists then used a different setup, hiding the targets in chambers connected to dodder sprouts only by curving pipes, so the vine could find them only by smell. Dodder sprouts still grew toward their favored targets. By placing dodder sprouts near different plants, the scientists found that the type of dodder that they were studying prefers tomatoes and a flower called impatiens. And when given a choice between tomato and wheat, vine seedlings grow toward tomato. The researchers then tested seven of the ingredients that make up tomato perfume separately. Dodder sprouts were attracted to three of them. One of these ingredients turns up in wheat perfume, but the wheat perfume also contains a substance that repels dodder sprouts. This chemical could offer farmers one way to fight the vine and save their crops.óC. Gramling

Stalking Plants by Scent
Stalking Plants by Scent








Designed and Powered by HBJamaica.com™