zoospore
A motile asexual spore that uses a flagellum for locomotion, found in certain algae, fungi, and protozoa. Technical term used in biology.
The zoospores of algae move through water using flagella.
Zoospores are released from the zoosporangium.
遊走子のう is the zoosporangium, the structure that produces and contains zoospores.
Formed from 遊走 “motile movement” and 子 “cell or reproductive body,” describing a spore capable of swimming by means of flagella.