Zoospore

A zoospore is an asexual spore that uses a flagellum for moving around. It is also called a swarm spore. These spores are created by some algae and fungi to multiply themselves.

Flagella
There are two types of flagellated zoospores, whiplash and tinsel or "decorated".
 Whiplash flagella are straight, to power the zoospore through its medium. There is also the 'default' zoospore, which only has the propelling, 'whiplash' flagellum.
 Tinsellated flagella have lateral filaments perpendicular to the main axis, which allow for more surface area, and disturbance of the medium, giving it the property of a rudder, which it uses for steering.

Both tinsel and whiplash flagella beat in a sinusoidal wave pattern, but when both are present, the tinsel will beat in the opposite direction of the whiplash, to give 2 axes of control of motility.
 There can be many combinations for location of the flagella, such as posterior whiplash; posterior whiplash, anterior tinsel; and anterior whiplash.

Zoosporangium
A zoosporangium is the sexual structure in which the zoospores develop in a plant, fungi, or protists.

Related pages
 Flagellum
 Fern
 Angiosperm
 Chytridiomycota

References
 C.J. Alexopolous, Charles W. Mims, M. Blackwell et al., Introductory Mycology, 4th ed. (John Wiley and Sons, Hoboken NJ, 2004) 

Category:Fungi