Diversity of Heterotrophs

Study Review

Tissue

A population of similar cells within an organism that work together to perform a common function

Triploblastic

Organisms that exhibit three embryonic germ layers: endoderm, mesoderm, and ectoderm

Coelom

A fluid-filled body cavity

Alimentary Canal

A tube that carries food through the body

Ecdysis

A periodic molt of the three-layered cuticle

Deuterostome Condition

Refers to the formation of an anus first and a mouth second during embryonic growth of the alimentary canal

Structural support in Anthropoda and Vertebrata

Exoskeleton and endoskeleton

Desiccation (Water loss prevention) in Anthropoda and vertebrata

Waxy cuticle and keratinized skin

Three embryonic germ layers of triploblastic animals

Endoderm, ectoderm, and mesoderm

Three extant lineages of triploblastic animals

Deuterostomia (radial pattern), Lophotrochozoa (Lophophore), and Ecdysozoa (molting)