About the SA Blog Network

Posts Tagged "seeds"

The Artful Amoeba

Are Cycads Social Plants?


Botanists have long puzzled over a peculiarity of ancient plants called cycads: they have huge, bright, fleshy seeds displayed in enormous cones. Yet there’s nothing correspondingly ginormous to eat and — I’ll use the polite term here — disperse them. And if their presumed former big dispersers (perhaps super-sized ice age mammals, marsupials, birds — [...]

Keep reading »
The Artful Amoeba

The Surprising Lives of Cycads


If you had to guess which organism possesses sperm with 40,000 tails, what would you guess? Elephant? Whale? Chuck Norris? Would you have guessed that it belongs to a plant? This is the sperm of Zamia roezlii. It has a flapper dress-like fringe of tens of thousands of flagella to turbo-charge its way to eggs.* [...]

Keep reading »
Extinction Countdown

Giant Tortoises and Baobab Trees: Imperfect Apart

Aldabra giant tortoise sq

Remove a species from an ecosystem and other species tend to suffer. Take the giant Madagascar tortoise, for example. The two species of giant tortoises on Madagascar went extinct centuries ago, but their loss is still being felt today. According to new research, the extinction of these tortoises robbed one of the island’s iconic baobab [...]

Keep reading »

More from Scientific American

Scientific American Holiday Sale

Scientific American Mind Digital

Get 6 bi-monthly digital issues
+ 1yr of archive access for just $9.99

Hurry this offer ends soon! >


Email this Article