Wk9 prelab - Pre lab PDF

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Summary

Pre lab...

Description

Name

Chordates and Vertebrates Prelab 1A

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Across 3. A vertebrate organism whose egg has adaptations that allow for survival on land. Eggs from these animals will contain four specialized extraembryonic membranes. 6. Animals that possess a dorsal hollow nerve cord, notochord, pharyngeal slits, and a post-anal muscular tail at some time during their development or lifetime. 8. An organism that is active at night. 9. Embryological structure found in chordates that can be used for filtration feeding when retained in adults, becomes gills of fish or develops into the jaw and inner ear of terrestrial animals. 11. Outermost extraembryonic membrane that is involved in gas exchange; in mammals, it contributes to the formation of the placenta and is also involved in nutrient exchange 12. Extraembryonic membrane that collects metabolic waste produced by the developing embryo. 13. Animals that possess a backbone.

Down 1. 2. 4. 5. 7. 10.

A fluid-filled extraembryonic membrane that surrounds and protects the developing embryo. Extraembryonic membrane that serves as a nutritional resource for the developing embryo. A vertebrate organism with four limbs. A flexible rod-like structure that provides support for chordates during embryological development. A vertebrate organism that develops jaws. The process of bringing previously swallowed food back up and expelling it through the mouth....