Studied by 4 peopleare arthropods segmented?
yes
what are common structures in arthropods?
jointed appendages, an exoskeleton containing chitin, and segmented bodies
what is beginning to evolve in arthropods?
a brain located in the dorsal part of the head
how many species of arthropods are there?
over 1 million
arthropods have a lot of…
variation
what are the four subphyla of arthropods?
trilobites, chelicerates, crustaceans, uniramians
trilobites are…
the oldest subphyla of arthropods and are extinct
what are some examples of chelicerates?
spiders, ticks, mites, scorpions, and horseshoe crabs
What are some examples of Crustaceans?
Lobster, shrimp, crab, isopods, and barnacle
what are some Examples of Uniramians?
uniramians include of most arthropods such as
centipedes, millipedes, and all insects—including bees, moths, grasshoppers, flies, and beetles
describe an arthropods circulatory system
arthropods have an open circulatory system comprised of a single dorsal vessel running through the body powered by one heart
what is the role of the exoskeleton?
a system of external supporting structures that are made primarily of the carbohydrate chitin that helps prevent water loss
what are the disadvantages of arthropods exoskeleton?
the exoskeleton does not grow as the arthropod grows, so organisms perform some molting or shell change. movement can only occur at joints
what evolved appendages do arthropods have?
Antennae, Claws, Walking legs, Wings, Flippers
what types of feeders are arthropods?
carnivores, herbivores, parasites, filter feeders, detritus feeders
describe arthropods respiration
they have evolved gills, book gills, book lungs, and tracheal tubes
tracheal tubes are found in…
terrestrial arthropods
most terrestrial animals dispose of their waste nitrogen-containing waste using…
Malpighian tubules
arthropods have pressure and sense organs to…
detects changes in their environment
insect ears are typically located behind their…
legs
arthropods have receptors in their…
mouthparts, antennae, and legs
what is camouflage?
disguising your body to hide in plain sight away from predators
what is mimicry?
making yourself appear like something you’re not, usually something bigger and scarier to scare away predators
how do arthropods reproduce?
males and females produce and egg and sperm, the female lays the egg. the only exception to this is spiders
what is metamorphosis?
a dramatic transformation from young to adult
what is a pupa?
an insect in its inactive immature form between larva and adult
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