Science vocab, test fri. Jan 12, 24.

animal without a backbone.

• exoskeleton

• invetebrates

• vertebrate

• hermaphrodites

hard/tough outer covering of many inverebrates that provides support.

• hermsphrodites

• inveretebrates

• exoskeleton

• vertebrates

animal with an exoskeleton and a backbone.

• inveretbrate

• vertebrate

• hermaphrodites

• exoskeleton

animals that produce both sperm and eggs in its body generally at different times.

• Vertebrates

• exoskeleton

• invertebrates

• hermaphrodites

type of fertilization that occurs when sperm and egg combine inside and animals body.

• ectoderm

• endoderm

• internal fertilization

• gastrual

two-cell-layer sac with an opening at 1 end that forms from the blastula durning enbroynoic development.

• Gastural

• ectoderm

• endoderm

• internal fertilization

inner layer of cells in the gasturla that develops into digestive organs and digestive track lining.

• endoderm

• internal fertilization

• endoderm

• ectoderm

outer layer of cells in the gastula that develops into nervous tissue and skin.

• gastural

• internal fertilization

• ectoderm

• endoderm

layer of cell between the endoderm that can become muscle tissue of the circulatory, respatorty, exterory systems.

• anterior

• radial

• bilaterial

• Mesoderm

Body plan that can be divided along any plane, through a central axis, into roughly equal halves.

• radical

• bilateral

• anterior

• mesoderm