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24 Cards in this Set
- Front
- Back
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what is the function of the green glands in the cray fish?
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-excretion
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what is the walter garstang hypothesis?
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evolution from echinoderms to chordates
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what are the end products of fat digestion?
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fatty acids and glycerides
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which phylums of animals has hte haeomcoel?
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phylum mollusca,arthropod
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what system of excretion and respiration is utilised by phylum mollusc?
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kidney
and gills in mantle cavity (lungs in mantle cavity for snail) |
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which class in the phylum mollusca has a closed circulatory system?
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cl cephlapoda
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what does eutely mean and what phylum of animal does it apply to
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-has a fixed number of cells it's entire life/ applies to phylum nematoda
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what types of muscles do the phylum nematoda have?
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only longitudinal. move via alternate contractions
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how is food transported through the pseudocoel of phylum nematoda?
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using pressure. has no stomach muscles
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what phylum does the species wucheria bancrofti belong to?
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belongs to phylum nematoda
causes elephantitis |
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what is metamerism and what phylum does it first occur?
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repeated body segments. occurs first in phylum annelid
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what is a clitellum and what phylum does it belong to?
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clitellum is the egg sac in the phylum annelids
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does phy annelid have a dorsal or ventral nerve cord?
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ventral nerve cord
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what are the benefits of metemerisation in annelids?
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-greater complexity in structure and function
-greater burrowing efficiency -independent movement by various segments |
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what are the feeding structures called in a polychaeta?
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palps
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how many segments are there in the class hiriudina?
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always 34
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what phylum is the phylum arthropds thought to have evolved from? and what where its charateristics?
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-phylum onycophora
annelid characteristics : -segmented body -unjointed appendages -nephridia arthropod features: -antennae -cuticle -claws on appendages tracheal system for respiration -open circulatory system |
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do arthropods have an open or closed circulatory system?
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they have an open circulatory system
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what is tagmatisation and what phylum is it seen in?
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fusion of body segments seen in phylum arthropods
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what are the excretory systems of cl chelicerate?
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malphigian tubules, coxal glands
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do arthropods have a coelem?
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no they have a haemocoel. annelids have a coelom and echinodermata have coeloms
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what system of excretion is utelised by the crustaceans?
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the maxillary gland behind the eyes
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what are the 2 types of metamorphisis (in hexapoda)?
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hemimetabulous (nymph -> adult)(small version of adult)
holometabulous (larva ->adult) |
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what are the names of the mouthparts in insects and what are their functions?
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-labrum (upper lip)
-mandibles -maxillae -hypopharynx (tongue) -labium (lower lip) NOTE modifications (absences) for varied diets |
