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BIO LAB Inverts IV
| Question | Answer |
|---|---|
| What does the word Antrhopoda translate to? | "Jointed appendages" |
| What are 3 adaptations that have helped Arthropods become the most successful group of animals? | -Exoskeleton - Segmentation - Jointed appendages |
| What are 3 functions of the exoskeleton? | - Waterproof - structure - protection |
| What is one disadvantage of having an exoskeleton? | - vulnerbale in between molt and breathing issues |
| What appendages on the crayfish have been specialized and what is their function? | - chelipeds (large claws) for defense and grasping - maxillipeds for food handiling - swimmerets modifided for reproduction |
| What is the difference between incomplete and complete metamorphosis? | -Incomplete have nymphs resemble adults but smaller, molts until maturity while complete its larval stage and the pupal stage |
| Complete metamorphosis is energetically expensive, what is the advantage of using so much energy to transform the body? | - it eliminates the competition of resources between young and old |
| Name 3 insects that undergo complete metamorphosis. | - Beetles, Butterfly, Bees/Wasp |
| Name 3 insects that undergo incomplete metamorphosis. | -Grasshoppers, Crickets, Katydids |
| Are insects seperate male and female? | - yes |
| Do insects reproduce sexually? | - yes |
| Do insects have internal or external fertilization? | - internal fertilization |
| What does Echinodermata directly translate to? | - "spikey skin" |
| Sea stars are members of Echinodermata, what are 3 other animals that are members of this Phylum? | - Sea urchins - sand dollars - sea cucumbers |
| What makes Echinodermata the most closely realted Phylum to vertebrates? | - Deutrostome present in both |
| What is the body symmetry of Echinoderms? | - Bilateral as larvae, radial as adults |
| How do sea stars feed? | - they invert their stomach secret digestive enzymes; external |
| What is the path of water through a sea star? | 1. Madeporite 2. Ring Canal 3. Radial Canal 4. Tube feet |
| What are 5 functions of the water vascular system? | 1. Circulatory respiration 2. Gamtes expelled 3. Controls feed 4. Feed on bivalves |
| Are sea stars separate male and female? (dioecious) | - Yes |
| Do sea stars reproduce sexually? | - No |
| Do sea stars have internal or external respiration? | - External |
| Where would you look for the madreporite? | - on Aboral side (dorsal view) |
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