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Plant Biology: Pollination and Fertilization

Related Article: Learn more about plants.

Insects usually assist in the fertilization of flowering plants. Fertilization occurs when one sperm nucleus fuses with the egg nucleus. Other sperms form the endosperm by fusing with egg cells.
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Plants: Plants in the Tropical Rain Forest

Plants: Plants in the Tropical Rain Forest (3:11)

Over half of the plant species on earth are located in tropical rain forests, where conditions are ideal for photosynthesis and growth.

Discovery Earth: Disney Gardens Ditch Dirt

Discovery Earth: Disney Gardens Ditch Dirt (1:25)

The Epcot Land Pavilion has nothing to do with Mickey Mouse, unless you count the pumpkin. Check out this video to see Disney's thriving hydroponic gardens.

Hawaii's Plants and Animals

Hawaii's Plants and Animals (3:05)

Watch this episode of Eco Geeks about Hawaii's plants and animals on HowStuffWorks. Over 90% of the plants and animals that live in Hawaii exist no where else in the world. Learn about Hawaii's plant and animal life in this episode of Eco Geeks.

Plants Can Make Phone Calls

Plants Can Make Phone Calls (1:50)

Watch this video showing how plants can make phone calls on HowStuffWorks. Four NYU grad students have developed a system that interfaces with plants so that they can call their owners on the phone when they need water. Learn about plants making... More »

Vampire Weed Attacks Other Plants

Vampire Weed Attacks Other Plants (1:34)

Watch this video about an aggressive vampire weed on HowStuffWorks. This weed sniffs out prey, wraps itself around the victim plant and sucks the nutrients out of it. Learn how the vampire weed works in this video from ScienCentral.

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What the Ancients Knew: Golden Ratio

What the Ancients Knew: Golden Ratio (1:02)

Watch how the Greeks achieved beautiful architecture using the golden ratio. Learn more with host Jack Turner from The Science Channel's series, "What the Ancients Knew."

What the Ancients Knew: Cotton Domestication

What the Ancients Knew: Cotton Domestication (1:07)

See how the ancient Indians made cotton into a worldwide sensation. They had a special technique to mine the difficult cotton seeds. Learn more about the mechanism used with The Science Channel's "What the Ancients Knew."

100 Greatest Discoveries: Evolution and Extinction

100 Greatest Discoveries: Evolution and Extinction (1:25)

On The Science Channel's "100 Greatest Discoveries," host Bill Nye discusses the relationship of evolution and catastrophic extinction with geologist, Dr. Samuel Bowring.

The Cycle Series: The Oxygen Cycle

The Cycle Series: The Oxygen Cycle (1:17)

The two parts of the oxygen cycle are photosynthesis, during which green plants take in water and carbon dioxide and give off oxygen, and respiration, during which organisms use oxygen and give off carbon dioxide and water.

The Cycle Series: The Process of Photosynthesis

The Cycle Series: The Process of Photosynthesis (4:08)

All green plants produce oxygen as a by-product of photosynthesis. During photosynthesis, plants use light energy from the sun to split water molecules into hydrogen and oxygen atoms. Rainforests produce about 30% of earth's oxygen.

The Cycle Series: Legumes

The Cycle Series: Legumes (2:53)

Nitrogen-fixing bacteria in legumes and in the soil change the nitrogen in the soil into a form plants can use.

The Cycle Series: The Importance of Nitrogen to Life

The Cycle Series: The Importance of Nitrogen to Life (1:46)

All living things must have nitrogen to live. Plants cannot use the nitrogen as it exists in the atmosphere.

The Cycle Series: Recycling and the Carbon Cycle

The Cycle Series: Recycling and the Carbon Cycle (3:15)

Green plants (producers) take in carbon atoms from the air and make them part of their tissue. The animals that eat these plants (consumers) return the carbon atoms to the atmosphere when they exhale.

Trees: Appreciating Trees

Trees: Appreciating Trees (0:41)

Trees provide us with food, shelter, cleaner air, and knowledge of the past.

Trees: Learning About the Past

Trees: Learning About the Past (0:49)

Trees tell us about the lives of earlier people, about previous forest fires, and about historical weather patterns.