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Fast Plant Movement
The leaves of the Mimosa plant in the video close when touched. Even wind triggers leaf closing. This fast plant movement is not a growth movement, instead it is due to changes in cell turgor pressure. Turgor pressure in plant cells is due to the amount of water inside water storage areas called vacuoles. The […]
The Fastest Moving Plant
To date, the fastest moving plant is the White Mulberry (Morus alba). The flower of this mulberry tree shoots pollen at speeds around 200 meters per second. The flower is able to shoot pollen so quickly because its stamens work like medieval catapults. How a Catapult Works A catapult is known as a trebuchet, which […]
Why Sunflowers Follow the Sun!
Sun-tracking or heliotropic flowers face the Sun as it moves across the sky each day. Sunflowers are heliotropic. How do these flowers turn so they face the Sun during the day? Discover for Yourself! Do the stems of twist so that the flowers continue to face the Sun? You can check this out for yourself. […]
Benefits of Solar Tracking Flowers
Solar-tracking, or heliotropic, flowers are common where the air is often cool and the growing season is short. The snow buttercup, arctic poppy and other bowl-shaped heliotropic flowers collect energy from sunlight and heat up. The temperature inside the bowl of these flowers can become as much as fourteen degrees Fahrenheit warmer than the air […]
Chlelate: Chlorophyll
Chlorophyll is an organic molecule. The basic organic molecule is composed of carbon and hydrogen. More complex organic compounds contain carbon, hydrogen, and other elements such as oxygen and nitrogen. A chelate is an organic compound with a central metal ion. Chlorophyll is one of the most important chelates in nature. In the diagram, the […]
Cloning: Dolly
Why was the cloned sheep called Dolly named after the Country Western Singer, Dolly Parton? The cells used to clone Dolly came from the breasts of Dolly’s mother. Dolly Parton is known for her large breast, so the scientists named the cloned sheep Dolly. More Information about Dolly Dolly was born July 5, 1996 at […]
Complete Flowers
A complete flower has these four basic parts: The carpel is the bottle -shaped structure in the center of the flower. Its top opening is called a stigma, followed by its neck (style) and rounded bottom (ovule). Stamen Petals surround and protect the carpel and stamen. Sepals are leaf-like structures that surround and protect the […]
Root Systems
Dandelion and grass represent the two main kinds of root systems, taproot system and fibrous root systems. The dandelion has a tap root system, which consists of a taproot that grows straight down and rootlets branching from the taproot. The grass has a fibrous root system, which consists of a main root that is not […]
Frog Tongue: Model and Game
Frogs have a long tongue that can extended far out of their mouths. A frog’s tongue is about one-third the length of its body. In the photo, the child’s tongue barely extends past her lips. If were one-third the length of her body, the child’s tongue would touch her belly button. Yikes! How would she […]
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