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Science (X) - Branches on the Tree of Life (X) - BioMedia Associates (X) - Chordates (X) - Streaming (X)

The Biology of Echinoderms (2005)

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Echinoderms are one branch of the deuterostome line of animal evolution, the branch to which Chordates also belong. Modules cover phylum characteristics and key biological details for five classes: sea stars; brittle stars and basket stars; sea urchins and sand dollars (including developmental stages); sea cucumbers; and crinoids (feather stars).

Grade Level: 
Middle
High
Length: 
00:23
The Biology of Echinoderms

The Biology of Chordates (2001)

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The Phylum Chordata includes tunicates, sea lancelets, hagfish, and all familiar vertebrate animals. This program explores how these seemingly diverse animals evolved and how the group is unified by four characteristic structures: a hollow dorsal nerve chord, a supportive notochord, gill slits, and a post-anal tail.

Grade Level: 
Middle
High
Length: 
00:21
The Biology of Chordates