He continued his studies of the zoospores and male cells of Algae and other similar plants, and contributed to the understanding of such motile stages in vegetable life.

Thus far, only the motile stage of Gymnodinium catenatum has been shown to produce the highly aliphatic biopolymer algaenan.

Unless-but of course there must be a motile stage.

These organelles, like micronemes, are characteristic of the motile stages of Apicomplexa protozoans.

The motile stages of both genera have a pair of anterior orthogonal flagella, vesicular mitochondrial cristae, inner alveolar membranes and micropores.

Locomotion of other gametes and any other motile stages is by gliding or body flexion.

Sponges have a motile larval stage, which becomes sessile at maturity.

Unless - but of course there must be a motile stage.

This motile stage then attempts to find a suitable substratum for settlement.

By contrast, descriptions of extant species are primarily based on the motile stages(namely on the thecae, which are less diverse ).