Bunchberry - World's fastest plant explodes with pollen
|Cornus canadensis (bunchberry or Canadian dogwood) grow in dense carpets in the tiaga or boreal forests of the northern hemisphere. Flowers bloom in late spring and produce small, edible, red berries during the summer.|
Like a medieval catapult, the bunchberry dogwood shoots pollen grains into the air faster than the Venus flytrap can snap its jaws shut, giving this launcher the speed record for plants. "Most people think of plants as stationary and sedentary," said Joan Edwards of Williams College. "We were even surprised how fast this flower opens." Using high-speed video observations, Edwards and her colleagues timed the tiny explosions of Cornus Canadensis, a species of dogwood that covers the ground of spruce-fir forests from Virginia to Canada. The flower opens its petals and fires its pollen in less than 0.5 milliseconds. This discharge is quicker than other speedy organisms: the Venus flytrap closes in 100 milliseconds; the froghopper (an insect) leaps in 0.5 to 1.0 milliseconds; the mantis shrimp (a tiny crustacean) kicks in 2.7 milliseconds.
|This shows a flower first closed and then open. The bar is 0.04 inches (1mm)|
|Bunchberry flower opening, recorded on video at 10,000 frames per second. Time elapsed is indicated. First frame shows a closed flower with four petals fused at the tip, restraining the stamens. Scale bar is 1mm|
Venus Flytrap's Speed Secret Revealed
|Closed cilia around the prey|
Unlike animals, plants have no muscles or brains. And plants are not known for their ability to move quickly, as a team of scientists and engineers point out in the Jan. 27 issue of the journal Nature. The secret has been revealed: The flytrap's leaves snap from convex to concave the same way that a contact lens can flip inside out, the scientists say. The team cut up leaves to study their natural curls, and also painted fluorescent dots on intact leaves to track their insect-devouring action with high-speed cameras. Like most lenses, Venus flytrap leaves are doubly curved, that is, curved in two directions, which allows the leaves to store elastic energy. With a contact lens, the two directions are perpendicular to one another. With a Venus flytrap leaf, they are not. That property creates an especially rapid elasticity that causes the leaf to snap even more quickly from convex to concave.
Bamboo - The Fastest Growing Woody Plants in the World
Source : wikipedia.org
Source : http://www.worldsbiggests.com