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43 Cards in this Set
- Front
- Back
What are the subphyla of phylum arthropoda?
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subphylum cheliceriformes
subphylum myriapoda subphylum hexapoda subphylum crustacea |
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centipedes and millipedes are in subphylum
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myriapoda
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arachnids are in subphylum....
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cheliceriformes
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insects are in subphylum
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hexapoda
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sea spiders are in subphylum
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cheliceriformes
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crabs and lobsters are in subphylum...
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crustacea
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horseshoe crabs are in subphylum...
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cheliceriformes
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shrimp are in subphylum
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crustacea
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how many living species of horseshoe crabs are there?
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4
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sea spiders are what type of eaters?
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carnivores, suck tissues directly with probiscus
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true or false: sea spiders have no specialized respiratory or excretory systems
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true
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how do horseshoe crabs mate?
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Atlantic Horseshoe Crabs mate in early spring, at high-tide lines (especially on a full moon tide). The larger female releases a pheromone to attract the male. The male grabs onto the female via his specialized pinchers. The female moves to the highest point of the tide and digs a hole half a foot deep. Into this hole she releases 200 blue-gray tiny eggs. Along with the eggs she releases another pheromone that causes the male to release sperm. The eggs are then covered by the incoming tide and the two organisms "unlatch" and go their separate ways.
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how are horseshoe crabs "living fossils"?
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little has changed in hundreds of millions of years
surviving members of a rich diversity of cheliceriforms that once filled the seas |
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what are the pedipalps (appendages) on arachnids used for?
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feeding or reproduction
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where is the poison in arachnids?
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on the movable fang of the chelicerae
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how does respiration work in arachnids?
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tracheae or book lungs (stacked platelike structures contained in an internal chamber)
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which organs of the spider secrete silk?
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spinnerets
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what type of eaters are arachnids?
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carnivores, liquefy food before ingesting
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how do cheliceriformes differ from the three other subphyla with regards to antennae?
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cheliceriformes have no antennae
other three subphyla have one pair antennae |
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how do cheliceriformes differ from the three other subphyla with regards to chelicera
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cheliceriformes have chelicera
other three subphyla don't |
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how do cheliceriformes differ from the three other subphyla with regards to eyes
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chliceriformes have simple eyes
other three have compoud eyes |
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how do cheliceriformes differ from the three other subphyla with regards to mouthparts
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subphylum cheliceriformes have no mandible
other three subphyla have mandibles |
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how do cheliceriformes differ from the three other subphyla with regards legs
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subphylum cheliceriformes has 4 pairs of walking legs
other three don't |
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what are the two classes of subphylum myriapoda?
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class chilapoda
class diplopoda |
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myriapods have _____ uniramous/biramous appendages
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uniramous
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chilapods have ___ pair(s)legs/segment
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1
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diplopods have ___ pair(s) legs/ segment
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2
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which class of myriapods roll up?
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diplopoda
(some roll up when threatened) chilapods never roll up |
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which class of myriapods are fast?
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chilapoda
diplopods are slow |
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how do chilapods fight/catch prey?
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strike out with poison claws and paralyze prey
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how do diplopods defend themselves?
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repugnatorial glands release irritating fluid/ defensive chemicals
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hexapods are in every habitat except
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the deep sea
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what are the three tagmata of hexapods?
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head, thorax, abdomen
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hexapods:
_ pr legs _ pr wings _ pr antennae |
3
2 1 |
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hexapods have uniramous/biramous appendages?
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uniramous
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true are false: there are no appendages on a hexapod's stomach
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true
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gas exchange in a hexapod occurs by
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independent tracheal system
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true or false: circulatory system in a hexapod transports O2
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false
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hexapoda incomplete metamorphosis
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young/nymphs resemble adults but are smaller, have different body proportions and lack wings
nymph undergoes a series of molts, each time looking more like an adult final molt: insect reaches full size, acquires wings, and becomes sexually mature |
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insects who undergo incomplete metamorphosis
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grasshoppers and some other insect groups
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90% of all insects undergo ____ metamorphosis
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complete
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complete metamorphosis
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larval stage specialized for eating and growing, looks entirely different from the adult stage, which is specialized for dispersal and reproduction
pupal stages between larval and adult stage |
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advantage of complete metamorphosis
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larvae and adults do not compete for resources
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