Term
| What are the 3 benefits of the coelomates body design over? acoelomates and pseudocoelomates |
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Definition
1. Repositions the body fluids
2. Allows complex tissues and organs to develop
3. Allows for a larger body size |
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Term
| What are the two larval stages of the Phylum Mollusca? |
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Definition
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Term
| What group of animals is in the Class Polyplacophora? |
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Definition
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Term
| What groups of animals are in the Class Gastropoda? |
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Definition
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Term
| What groups of animals are in the Class Bivalvia? |
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Definition
| Bivalves, Includes clams, scallops, mussels, oysters and others |
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Term
| How many shells do Bivalvia have? |
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Definition
| Have two lateral (right and left) shells |
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Term
| What type of feeding do they do with incurrent and excurrent valves? |
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Definition
| Most are sessile filter-feeders |
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Term
| What groups of animals are in the Class Cephalopoda? |
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Definition
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Term
| Describe the function of arms? |
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Definition
| suction cups for feeding and locomotion |
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Term
| Describe the function of ink sac? |
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Definition
| capable of expelling ink to confuse predators. |
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Term
| Describe the function of tentacles? |
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Definition
| longer than arms, retractable, with suction cups only at flattened tips |
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Term
| What are nephridia and what are they used for? |
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Definition
Special excretory structures that remove nitrogenous wastes
-Consist of cilia-lined openings called nephrostomes |
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Term
| What groups of animals are in the Class Polychaeta? |
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Definition
| Polychaetes Mostly marine worms, such as tubeworms and bristleworms |
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Term
| Describe the function of parapodia? |
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Definition
| Used in swimming, burrowing, crawling |
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Term
| What groups of animals are in the Class Oligochaeta? |
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Definition
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Term
| Describe the function of the clitellum in earthworms? |
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Definition
| secretes mucus that holds the worms together during copulation |
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Term
| What groups of animals are in the Class Hirudinea? |
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Definition
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Term
| Describe the function of the anticoagulant? |
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Definition
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Term
| What are the 3 phyla of Lophophorates? |
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Definition
| Bryozoa, Brachiopoda, and Phoronida |
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Term
| What feature do the 3 phyla share and what is it used for? |
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Definition
lophophore
Functions in gas exchange and feeding |
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Term
| What is an exoskeleton and what is its function? |
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Definition
| made of secreted chitin (carbohydrate) and protein.Functions: protection & muscle attachment. |
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Term
| What is ecdysis and why is it necessary with an exoskeleton? |
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Definition
molting
Shedding the outer cuticular layer |
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Term
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Definition
| Respiratory system consists of tracheae and tracheoles |
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Term
| What are Malpighian tubules? |
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Definition
| a unique excretory system |
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Term
| What groups of animals are in the Class Arachnida? |
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Definition
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Term
| What are the 2 tagmata of Class Arachnida? |
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Definition
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Term
| What groups of animals are in the Class Chilopoda? |
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Definition
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Term
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Definition
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Term
| What are the 2 difference between the two classes?(diplopoda and chilopoda) |
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Definition
Centipedes are all carnivores (eat insects)
Millipedes are largely herbivores |
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Term
| What groups of animals are in the Class Crustacea? |
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Definition
| Crabs, shrimps, lobsters, barnacles, others |
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Term
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Definition
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Term
| What groups of animals are in the Class Hexapoda? |
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Definition
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Term
| What are the 3 body regions of insects and what parts do they contain? |
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Definition
1. Head = has pair of antennae and modified mouthparts
2. Thorax = has three segments, each with a pair of legs
3. Abdomen |
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Term
| How does the symmetry of animals in Phylum Echinodermata change through life? |
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Definition
-Larvae = bilateral symmetry
-Adults = pentaradial symmetry |
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Term
| What is the endoskeleton? |
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Definition
| -Found internal to a delicate epidermis which contains thousands of neurosensory cells |
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Term
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Definition
| Composed of either movable or fixed calcium-rich (calcite) plates |
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Term
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Definition
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Term
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Definition
| muscular sac for tube feet control |
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Term
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Definition
| external extensions perforating through pores in ossicles of adoral side, suction to surfaces for locomotion and feeding |
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Term
| What are the 5 classes of Phylum Echinodermata? |
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Definition
Class Asteroidea = sea stars
Class Crinoidea = sea lilies, feather stars
Class Echinoidea = sea urchins, sand dollars
Class Holothuroidea = sea cucumbers
Class Ophiuroidea = brittle stars including basket stars |
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