Invertebrates
Sponges, Echinoderm, Mollusks, And Arthropods- Nicole
Mollusks
Mollusk - an animal witha soft body and no bones
Example: slugs
Characteristics
Shells grow with in their body's
Has a heart
Has a mantle
Has a siphons
Has muscles
Has a foot
Has a stomach
Has a mouth
Has intestine
Has gills
Has a kidney
Reproduce sexually
Adaptations - has a shells to protect its body and provides support. Jet like motion.
Name two characteristics of snails?
Has a heart
Has a brain
Sponges
Sponge - one type of animal that filters the water it lives in to get food.
Example - Venus-Flower Basket
Characteristics
Reproduce asexually
Can't move once they attach as adults
gets food from environment around it.
between inner and outer layer there is a jellylike layer grow at almost any depth
grow on hard surfaces
shaped like fingers, tree branches or round
filters water to get its food
5000 known species
no real digestive system
Adaptation body is a network of tiny pores and canals that allow water to filter through to obtain food because they don’t move.
Adaptation - - body is a network of tiny pores and canals that allow water to filter through to obtain food because they don’t move
Why is a sponge classified as an animal? It takes in food and has moving whip-like structures
Arthropods
arthropod - an animal that has a jointed exoskeleton, and jointed limbs
Crustaceans - one kind of arthropod
arachnids - an arthropod with eight legs and no antennae, such has a spider, scorpion, tick, or mite
Insects - an arthropod with six legs jointed legs, such as a grasshopper.
Characteristics
Has a circulatory system
Reproduce sexually
Has a brain
Has legs
Adaptations
Hard skeleton enables it to protect it self
Name two characteristics arthropods share. -
Has a brain
Jointed exoskeleton
Echinoderms
Echinoderms - an invertebrate that has an internal skeleton and spines that are part of its skin
examples: sea urchins
Characteristics
Internal skeletons
Live in ocean only
Powerful jaws
Has a mouth
No brain
Nerves that are able to move and feed
Radial symmetry
Adaptation -
The mouth of an echinoderon is at the center of the underside of its body. Many echinoderon have powerful jaws and, hidden among their spines, poison glands.
In what ways are echinoderms different from other invertebrates?
They have spines sticking out from their body's