worms,sponge, jelly test Flashcards
what are different kinds of feeders in animals
filter feeders, carnivores, omnivores, herbivores,parasitic and detritus feeders
what is a detritus feeder
feeds on decaying organic matter
what is a filter feeder
use cilia to catch particles from water
what is sponge scientific name
phylum porifera
what are the tree classes of sponges
calcarea , demosponginae
and hecactinellida
calcarea, horn sponges(bath) glass sponges
what is calcarea sponges
they have spicules and skeleton structures
what is demosponginae
horn sponges or bath sponges
what is hexactinellida
glass sponges
characteristics of sponges
- are asymmetrical
- can repair and restore themselves
- no mouth, organs, systems, anus, nerve cells and digestive tract bc colonial
- interior is hallow
- interior spaces are lined with collet cells
what is a sponge life cycle
1 sperm swim to egg and merge
2 larva is formed and develop in parent
3 mature larva swim away to grow so no competition for nutrients
what is jellyfish scientific name
phylum cnidaria
what is in phylum cnidaria
jellyfish
corals
anemones
hydroids
what is cnidaria
soft bodies animals with stinging tentacles arranged in circles around mouth
what are the 3 body layers of cindaria
ectoderm, mesoglea, gastrodemis
what are the three classes of jellies
scyphazoa
staurozoa
cubozoa
what lifecycle are jellyfish
mainly medusa and polyp stage is very reduced
what is example of hydrozoas
they are marine (hydra and portuguese man of war
what life cycle do hydrozoa have
some have both medusa and polyp
what life cycle is corals and anemones
entirely polyp
what are scyhozoa jellies
moon jellies, harmless and very common or red jelly, painful and less common
what are staurozoa jellies
very small
attached to seaweed and rocks
found in cold water in north and south hemisphere
what are cubozoan jellies
most dangerous
painful sting
(the sea wasp)
what is the two stages of cnidaria life cycle
polyps and medusa
describe polyp
- tubular body with mouth at one end and end surrounded with tentacles
- may live singly or in colonies
describe medusa
-“jellyfish”form
-free swimming and are the sexually mature form
-bell shaped or umbrella shaped body
radical symmetry
how does the reproduction of cnidraia work
can happen asexual: budding (polyps)
or sexual: gametes (in all medusa and some polyps)
young hatch in mothers stomach then she spits them out
what is scientific name for roundworms
phylum nematodo
characteristics of round worms
- unsegmented
- pseudooccelomates
- colourless
- have special glands to attach to substances
- reproduce sexually
structure of nematodo
- anus and mouth
- cylindrical body tapered both ends
- tube within a tube body plan
scientific name for flat worms
phylum platyhelminthes
characteristics of flatworms
- flat body
- bilateral body plan
- have a head (cephalization)
- incomplete digestive system (no anus)
how to flatworms reproduce
sexual: hermaphroditic
asexual: binary fission
what is advantage of being flat for flatworms
faster absorption and release of waste
what are the 3 classes of platyhemnthe
turbellana- planarians
trematoda-flukes
cestoda-tapeworms
what are the 3 body layers of flatworms
endoderm , mesoderm and ectoderm
platarains -turbellana
colorful
carnivores
asexual or sexual reproduction
flukes-trematoda
tough body covering two suckers most are internal parasites life cycle need multiple hosts hermaphrodites
tapeworms- cestoda
lack a digestive system
have sucker and hooks
neck produces segments called proglottids
scientific name for segmented worms
annelid
characteristics of segmented worms
have coelum
what is it called when an animal has t and m part
hermaphrodite
