16.1 Invertebrates
An animal without a backbone
Invertebrate
The death of coral, it turns white in this process.
Coral Bleaching
A nonliving outer layer of segmented and roundworms
Cuticle
This type of mollusk has two shells to help protect and support.
Bivalves
All Echinoderms live in this environment
Marine
Symmetry displayed by dividing an organism into two mirror images
Bilateral Symmetry
Sessile
These worms belong to phylum Annelida
Segmented Worms
The part of a mollusk's body that contains its heart and digestive organs
Visceral Mass
These echinoderms look like plants
Sea Lilies
An essential part of skin, muscles, bones, and connective tissue.
Collagen
Cnidarian stinging cells are known as
These cells are responsible for flatworms and segmented worms removing their wastes
Flame Cells
The pigment-bearing cells that allow some cephalopods to change the color of their skin.
Chromatophores
Knobs or leg-like structures on the bodies of echinodemrms.
Tube Feet
The three germ layers
1. Endoderm
2. Ectoderm
3. Mesoderm
Sponges can reproduce asexually by producing these structures.
Gemmules
A worms digestive tract forms from this germ layer.
Endoderm
An organ near the mouth with many teeth, like a cheese grater.
Radula
Most echinoderms have an exoskeleton made of plates called
Ossicles
The six attributes all animals share
1. Nutrition
2. Respiration
3. Circulation
4. Reproduction
5. Support
6. Movement
Digestion happening inside cells instead of a digestive system.
Intracellular Digestion
Digestion of food before it gets into the cells that need it.
Extracellular Digestion
A mollusk uses these tubes to circulate water from their environment.
Siphons
Echinoderm Larvae have this type of symmetry
Bilateral Symmetry