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30 Cards in this Set
- Front
- Back
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Animals are _ and gain nutrition as _
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Multicellular
Heterotrophs |
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During early devlopment, embryos with ectoderm and endoderm are called
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Dipoblastic
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During early development, embryos with ectoderm mesoderm and endoderm are called
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triploblastic
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if the blastopore of the gastrula becomes the mouth the anmimal is called
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protostome
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if the blastopore of the gastrula becomes the anus the animal is called a
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deuterostome
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_symetry describes a body plan in which any plane along the main body axis divides the animal into similar halves, no front or back
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radial
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if the obdy can be divided into left and right havles by a single plane,can only cut down the middle
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bilateral
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the concentration of sensory and nervous tissue at the anterios end of an animal is?
(recognizable head) |
caphalization
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an animla with NO body cavity is?
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acoelomate
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_ describes a body cavity in which muscle( mesoderm) lines only on the periphery and NOT surrounding body organs
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psendocoelomate
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_ describes a body cavity completely enclosed on both sides by mesoderm
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ceolomate
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Of what value is body segmentation?
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specialization and alter shape for controlled movement
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Contrast motile and sessile
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-move
-don't move |
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_ feeders strain small food items from water
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filter
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_ eat plants or plant parts
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herbivores
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_ live in or on hosts from which they obtain nutrients and energy
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parasites
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_ capture and eat living thing , small animals
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predators
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_ feed on dead organic material
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detrivores
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what cells do sponges use to bring water in and strain food from it?
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choanocytes
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what devices located on their tenticles do jellyfish use to inject toxins into their prey?
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nematcysts
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why would humans be designated omnivores?
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they eat meat and plants
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why would it be DISadvantageous for a parasite to kill its host?
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they would not have a food source
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how can having varying body forms increase an organism's survival?
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allows them to utilise different foods
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list some ways that animals can disperse as immatures and as adults
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-eggs, larva
-fly |
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what would be the value to a parasite of having multiple hosts?
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increase survival
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spinges lack cell layers( tissues) and have no?
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true organs
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sponges have a "skeleton" made of a spinelike?
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spicules
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the group name for jellyfish, sea anemomes, corals, erc is?
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cnidarians
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food digestion in cnidarians is done in _the cavity with has only one opening, which serves as _ and _
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gastrovascular
mouth. anus |
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cnidarians have a sessile _ life stage and a free swimming _ stage
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polyp
medusa |
