What Is Nonflagellated Sperm?

Non-motile sperm is characteristic of advanced plants like angiosperms. In lower plants like Algae, Bryophytes and Pteridophytes, sperm is motile and has cilia or flagella. In animals, the sperm is generally motile. In Ascaris, however, the sperm is amoeba like and non-flagellated.

What is flagellated plant sperm?

In bryophytes and pteridophytes, flagellated sperm must swim through a film of water to reach eggs cells in archegonia. The evolution of pollen in seed plants led to even greater success and diversity of plants on land.

What kind of plants have flagellated sperm?

The only extant seed plants that have flagellated sperm are Ginkgo and Cycadales (Table 1, Figs.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.