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- Hexactinellida - Glass sponges - Siliceous spicules with 6 rays intersecting at right angles - Cannot contract - Can rapidly conduct electrical impulses - Demospongiae - Most diverse sponge group - Composed of spongin fibers/siliceous spicules - Calcarea - Only sponge group with CaC03 spicules - Near shore or shallow areas - Pores instead of mouth, water and nutrients are transferred by its flagella - Carnivorous sponges :O (harp sponge
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Started 10/6/17! http://www.biology4kids.com/files/invert_starfishurchin.html https://manoa.hawaii.edu/exploringourfluidearth/biological/invertebrates https://oceana.org/marine-life/corals-and-other-invertebrates Good overall knowledge links ^^^ Made by sunu!!!!
http://faculty.evansville.edu/de3/b10804/PDFs.html Phylum Porifera (sponges) http://faculty.evansville.edu/de3/b10804/PDFs/4_Porifera.pdf
- Hexactinellida - Glass sponges - Siliceous spicules with 6 rays intersecting at right angles - Cannot contract - Can rapidly conduct electrical impulses - Demospongiae - Most diverse sponge group - Composed of spongin fibers/siliceous spicules - Calcarea - Only sponge group with CaC03 spicules - Near shore or shallow areas
Pores instead of mouth, water and nutrients are transferred by its flagella
Carnivorous sponges :O (harp sponge)
Adults are sessile
Asymmetrical
Filter feeders
Other organisms live inside (symbiosis)
Consists of CaCo3, silica or collagen fiber spicules
Sexual and asexual reproduction (budding)
Internal budding (?) larval form is called parenchymula
Most are pelagic
2 way gut (food in and out through same opening)
Cilia transfers food and gas around
Stinging cells (cnidocytes)
Staurozoa (Stalked jellyfish) [medusozoa] Phylum Platyhelminthes (flatworms)
Bilaterally symmetrical
Triploblastic (composed of 3 cells)
Only has a gut
2 way gut
invertebrates
Respires by diffusion
Parasitic symbiosis (Not all) _- Trematoda (Flukes)
Endoparasitic (inside of manly vertebrates)
Epidermis is syncytial (many nuclei with no, or little, separation between cells)
Complicated life cycle including multiple hosts
various suckers, hooks and attachment organs (oral, mid ventral sucker)
Monogenea (Flukes)
Epidermis is syncytial
Mainly ectoparasites of fish
Simple life cycle with 1 definitive host
Suckers called opisthaptor around the mouth
posterior attachment organ that can also be a sucker, or hooks or clamps.
Larvaes are free- swimming
Cestoda (Tapeworms)
Parasitizes vertebrae/vertebrae guts depending on species
Nutrients received directly through epidermis,
contains many folds, increasing surface area
Equipped with many mitochondria_
- Body is formed of proglottids (segments) behind the scolex (oldest layers _are at posterior end)
No veliger stage
Flattened, oval shape
Heart and open blood system
Head lacks tentacles or eyes
Simple nervous system with 2 pairs of lateral nerve cords
Many aesthetes (minute sensory organs like light receptors)
Feeds on encrusted organisms
Class Gastropoda (snail, nudibranchs, slugs)
Largest group in the phylum mollusca
Their habitat is extremely diverse
Only mollusc to invade the land
Originated in the ocean
Larvae (veliger) is free swimming and ciliated when fertilized (Trochophore larvae)
The veliger undergoes torsion
Most live on hard substrate
Most are benthic
HAS RADULA
Class Bivalvia (bivalves)
Lives on soft and hard substrate
Most have shells
Burrows into sediment or lives on the ocean floor
Pallial cavity with very large gills to get suspended food
Food is bound in mucus, then carried to the ciliated labial palps by the cilia
Digestion is carried out in the digestive diverticula
Hyaline rod rotates to release enzymes into the stomach
Hermaphroditic and dioecious
Bilaterally symmetrical
Lacks head, radula, and jaws
Class Cephalopoda (squid, octopus, cuttlefish, chambered nautilus)
Mainly active predators
Most intelligent, mobile, and large in Mollusca
Diversity in size, predation, locomotion, disguise and communication
Nautiloids are the earliest fossil record found within class cephalopoda
Nautiloids and ammonoids can be differentiated by the location of their siphuncle (lining of the shell, a tube that connects the chambers) and shapes of their sutures (squiggly thing that intersects the siphuncle, also called a septa)
Marine Discovery Ecology 450 Phylum Arthropoda (shrimp, crabs, barnacles, isopods, etc.)
Madreporite: Where the starfish absorbs water; helps circulate water through its water vasular system. Ambulacral groove: It catches food and moves it towards the mouth, working together with its suction cups/ foot i think idk. Anus and mouth is on the same side (up side) lul.
Ampulla: Helps store water, contracts and un-contracts to help with locomotion (movement) http://www.madreporite.com/science/digest.htm Research more ^^^
