worms,sponge, jelly test
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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