a. First Characteristic: b. Second Characteristic: c. What structures developed from the dorsal hollow nerve cord that led to the formation of the above characteristics? d. First structure: e. Second structure: 2. Corrected_texts: a. Ammocoetes larva (what is it): b. How does it demonstrate a link to ancestral chordates like the lancelet? c. What advances are evident to link it to the vertebrates?
Added by William N.
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Step 1: Ammocoetes larva is a larval form of primitive jawless vertebrates that bury themselves in the mud and feed on microorganisms. Show more…
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