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5 Cards in this Set
- Front
- Back
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What are the characteristics of agnathans? The class Agnatha includes what two extant forms?
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Agnathans have no jaws, they are jaw-less fish. The two extant forms of agnathans are hagfish and lampreys.
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Explain and provide an example of a vertebrate utilizing each of the following reproductive strategies: a)oviparous, b)ovoviviparous, and c)viviparous.
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a)Oviparous=lay eggs. Ex. birds
b)Ovoviviparous=retain eggs. Ex. some sharks c)Viviparous=embryo develops inside the mother. Ex. Humans |
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Using fully labeled diagrams, compare the placoid scales of sharks with the teeth of sharks and the teeth of mammals.
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See class notes from 5/14.
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Diagram the circulation of blood in a fish. Include the heart and it's chambers. Where does the system receive oxygenated blood? Where is the blood richest in co2?
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See class notes from Jason's 5/19.
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Distinguish between horns and antlers. Identify a mammal with horns and a mammal with antlers.
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HORNS:
1. Made of keratin 2. Attached to a bony knob 3. Not shed with one exception 4. Present in both sexes with one exception 5. Do not branch with one exception ANTLERS: 1. All bone 2. Only males have them 3. Shed annually, grow annually 4. Branched Cud chewers, or cow-like animals have horns, bison, cow, sheep, goats, etc. Antler animals are deer, elk, moose, and caribou. |
