Chordate

Chordate

Assessment

Interactive Video

Science, Biology

6th - 12th Grade

Hard

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The video explains the development of a stiff rod-like structure called a notochord, found in all vertebrates and some invertebrates. In vertebrates, the notochord evolves into the spinal column. The video also covers invertebrates like lancelets, sea squirts, and hagfish that possess a notochord.

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2 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

How many vertebrates are included in the category that has a notochord?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What are some examples of simple fish mentioned in the text?

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