In phycology, a pneumatocyst is a floating structure that contains gas found on brown seaweed. A seaweed`s thallus may have more than one. They provide buoyancy to lift the blades toward the surface, allowing them to receive more sunlight for photosynthesis. The proportion of gases in the pneumatocysts varies depending on the physiological status....
Found on
http://en.wikipedia.org/wiki/Pneumatocyst
• (n.) A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia.
Found on
http://thinkexist.com/dictionary/meaning/pneumatocyst/
Pneu·mat'o·cyst noun [
Pneumato- +
cyst .]
(Zoology) A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia.
Found on
http://www.encyclo.co.uk/webster/P/112
No exact match found.
