exam 3 chapter 16 Flashcards
invertebrates
do not have a back bones
95-97% of known animals
largest number are species of insects
include sponges, tapeworms, rotifer, insects
sponges
sedentary, live in fresh and marine water
lack true tissues and organs
suspended feeders
hermaphrodites
suspended feeders
captures food particles suspended in water that passes through their body
hermaphrodites
functions as a male and female
tapeworms
adult flat worms
parasites of vertebrates and lack a digestive system
ingested by consuming undercooked food
absorb nutrients from host body
fertilized eggs produced by sexual reproduction, leave host body in feces
rotifers
tiny animals that inhabit fresh water, ocean and damp soil
alimentary canal
reproduce by parthenogenesis
some lack males entirely
alimentary canal
a digestive tube with a mouth and anus that lies within a fluid filled psudocoelom
partengenesis
an asexual reproduction in which females produce offspring from an unfertilized egg
insects
have more species than all other forms of life combined
live in almost every terrestrial habitat and fresh water
anatomy includes several complex organ systems
flight is a great success of these because they can escape predators, find food, and disperse to new habitats quickly
some insects are beneficial as ____________ while others are harmful _____ of diseases or rest or crops
pollinators, carriers
metamorphosis
process in which an animal physically develop after birth to hatching involving relatively abrupt change un body structure
complete metamorphosis
four stages
egg, larva, pupa, adult
beetles, moths, fleas and mosquitoes
incomplete metamorphosis
three stages
egg, nymph, adult
true bugs, grasshoppers, cockroaches, termites, praying mantissas, crickets, lice
