News tagged with seeds
Researchers build flying robotic 'tree helicopter' (w/ Video)
(PhysOrg.com) -- Many trees disperse their seeds by releasing "helicopters," those single-winged seeds that are also called "samaras." As these seeds fall to the ground, their wing causes them to swirl and ...
Jan 25, 2011 |
4.5 / 5 (36) |
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This beetle uses eggs as shields against wasps
(PhysOrg.com) -- New University of Arizona research has discovered that seed beetles from the desert Southwest shelter their broods from attacking parasitic wasps under a stack of dummy eggs.
Sep 14, 2011 |
5 / 5 (5) |
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How did flowering plants evolve to dominate Earth?
To Charles Darwin it was an 'abominable mystery' and it is a question which has continued to vex evolutionists to this day: when did flowering plants evolve and how did they come to dominate plant life on earth? Today a study ...
Dec 01, 2009 |
4.4 / 5 (10) |
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Aerosols May Drive a Significant Portion of Arctic Warming
(PhysOrg.com) -- Though greenhouse gases are invariably at the center of discussions about global climate change, new NASA research suggests that much of the atmospheric warming observed in the Arctic since ...
Space & Earth / Earth Sciences
Apr 08, 2009 |
4.3 / 5 (19) |
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Scientists Discover Pentagonal Ice
(PhysOrg.com) -- Scientists at the University of Liverpool have discovered a five-sided ice chain structure that could be used to modify future weather patterns.
Apr 07, 2009 |
3.9 / 5 (15) |
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It's raining pentagons
This week's Nature Materials (09 March 2009) reveals how an international team of scientists led by researchers at the London Centre for Nanotechnology (LCN) at UCL have discovered a novel one dimensional ice ch ...
Nanotechnology / Nanomaterials
Mar 08, 2009 |
4.2 / 5 (9) |
2
Is it ripe? Carbon nanotube-based ethylene sensor establishes fruit ripeness
(Phys.org) -- The term ethylene (ethene) generally brings to mind polyethylene plastics, not fruit. However, ethylene is more than just a feedstock for chemical industry, it is also the smallest plant hormone, ...
Chemistry / Analytical Chemistry
May 19, 2012 |
4.8 / 5 (5) |
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Tiny plants could cut costs, shrink environmental footprint
Tall, waving corn fields that line Midwestern roads may one day be replaced by dwarfed versions that require less water, fertilizer and other inputs, thanks to a fungicide commonly used on golf courses.
May 15, 2012 |
4.5 / 5 (6) |
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Ocean acidification linked to larval oyster failure
Researchers at Oregon State University have definitively linked an increase in ocean acidification to the collapse of oyster seed production at a commercial oyster hatchery in Oregon, where larval growth had ...
Apr 11, 2012 |
4 / 5 (12) |
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Seed size is controlled by maternally produced small RNAs: research
Seed size is controlled by small RNA molecules inherited from a plant's mother, a discovery from scientists at The University of Texas at Austin that has implications for agriculture and understanding plant ...
Apr 11, 2012 |
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Not just for the birds: Man-made noise has ripple effects on plants, too
A growing body of research shows that birds and other animals change their behavior in response to manmade noise, such as the din of traffic or the hum of machinery. But human clamor doesn't just affect animals. ...
Mar 20, 2012 |
5 / 5 (4) |
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Genetic tests show Central Australian palm trees diverged from Northern trees more recently than thought
(PhysOrg.com) -- For years, tourists visiting central Australia’s famous Alice Springs have been told that the palm trees in the area are relics left over from the days millions of years ago when Australia’s ...
Mar 08, 2012 |
4 / 5 (2) |
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Research team shows people are carrying invasive seeds to Antarctica
(PhysOrg.com) -- When thinking of invasive plants taking hold in a new environment, not many people would think of Antarctica; it’s cold and hostile and there aren’t many types of plants that could ...
Space & Earth / Earth Sciences
Mar 06, 2012 |
5 / 5 (3) |
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Research shows promise in converting camelina oil into jet fuel
(PhysOrg.com) -- Researchers at Montana State University-Northern have developed a process to convert camelina oil to jet fuel and other high-value chemicals. MSU has applied for a U.S. patent and research is ongoing.
Technology / Energy & Green Tech
Feb 13, 2012 |
5 / 5 (2) |
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Steroids control gas exchange in plants
Plants leaves are sealed with a gas-tight wax layer to prevent water loss. Plants breathe through microscopic pores called stomata (Greek for mouths) on the surfaces of leaves. Over 40% of the carbon dioxide, CO2, in the ...
Feb 05, 2012 |
3.7 / 5 (3) |
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Seed
A seed ( /ˈsiːd/ (help·info)), referred to as a kernel in some plants, is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth within the mother plant. The formation of the seed completes the process of reproduction in seed plants (started with the development of flowers and pollination), with the embryo developed from the zygote and the seed coat from the integuments of the ovule.
Seeds have been an important development in the reproduction and spread of flowering plants, relative to more primitive plants like mosses, ferns and liverworts, which do not have seeds and use other means to propagate themselves. This can be seen by the success of seed plants (both gymnosperms and angiosperms) in dominating biological niches on land, from forests to grasslands both in hot and cold climates.
The term seed also has a general meaning that predates the above — anything that can be sown i.e. "seed" potatoes, "seeds" of corn or sunflower "seeds". In the case of sunflower and corn "seeds", what is sown is the seed enclosed in a shell or hull, and the potato is a tuber.
For more information about Seed, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
