As anyone with seasonal allergies knows, unseen airborne particles can really wreck a person's day. Like the tree pollen that might be plaguing you this spring, small concentrations of trace elements in the air can have significant ...
Environment
Apr 17, 2024
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23
Most mammals and humans have a double set of chromosomes—and as a rule, plants do, too: One set comes from the father, the other from the mother. Such organisms are called diploids. However, sometimes the number of chromosome ...
Plants & Animals
Apr 16, 2024
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1
A new study has shown pollen grains can be used as green templates for producing biomaterials, showcasing their potential to support drug delivery and bone regeneration.
Biotechnology
Apr 3, 2024
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119
Thick clouds of dust blown in from the Sahara once again covered Greek skies Monday, especially Athens and Thessalonika, with temperatures rising as high as 31°C (88°F).
Environment
Apr 1, 2024
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15
Australia's Indigenous populations have played an important role in modifying the continent's landscape over millennia, particularly by using fire to create open spaces for daily activities. This continued until they left ...
In the quest to decipher the evolutionary relationships of extinct organisms from fossils, researchers often face challenges in discerning key features from weathered fossils, or with prioritizing characteristics of organisms ...
Molecular & Computational biology
Mar 20, 2024
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54
It is well known that animal-pollinated plants usually offer nectar or pollen to reward vectors for pollen transfer. While nectar is a kind of sugar water, pollen is protein-rich, a must-need nutrient for bee babies. The ...
Plants & Animals
Mar 7, 2024
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5
Crowds lined up in San Francisco on Wednesday to see—and smell—the blooming of an endangered tropical flower that releases a pungent odor when it opens once every several years.
Plants & Animals
Feb 29, 2024
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20
Pollen can help scientists track changes in vegetation through time, as they respond to moderations of the climate, be that glaciation or deglaciation with transitions into and out of ice ages. Furthermore, it can help elucidate ...
Most garden enthusiasts know that certain flowers can attract pollinators. New research helps explain why and also provides more details about how the nutrition found in plant pollen may determine which specific bee communities ...
Plants & Animals
Jan 8, 2024
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133
Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm cells). Pollen grains have a hard coat that protects the sperm cells during the process of their movement from the stamens to the pistil of flowering plants or from the male cone to the female cone of coniferous plants. When pollen lands on a compatible pistil or female cone (i.e., when pollination has occurred), it germinates and produces a pollen tube that transfers the sperm to the ovule (or female gametophyte). Individual pollen grains are small enough to require magnification to see detail.
This text uses material from Wikipedia, licensed under CC BY-SA
