Animal Body Plan

Animal Body Plan

by Aicelle Velasco

Multiple Choice

The animal's digestive tract forms from the _______.

• endoderm

• mesoderm

• ecotoderm

• protostome

Multiple Choice

Layers of cells on the outer surface of the gastrula

• ectoderm

• endoderm

• mesoderm

Multiple Choice

6- Coelom is the body cavity formed from the layer:

• (i) Ectoderm

• (ii) Mesoderm

• (iii) Endoderm

• (iv) Mesoglea

Multiple Choice

Acoelomates are characterized by

• the absence of a brain

• the absence of a mesoderm

• deuterostome development

• a coelom that's not lined with a mesoderm

• a solid body with a cavity surrounding internal organs.

Multiple Choice

When a blastopore becomes the mouth of an organism it is called a

• protostome

• deuterostome

• coelomate

• acoelomate

Multiple Choice

Animal with a mouth that does NOT develop from the opening in the gastrula.

• deuterostome

• protostome

• insect

• snail

Multiple Choice

Which of the following adaptations increases flexibility and motion in annelids?

• complete digestive tract
• endoskeleton
• segmentation
• three tissue layers

Multiple Choice

What are characteristics that we use to define an animal?

• eukaryotic, multicellular, autotroph, cells have cell walls

• prokaryotic, multicellular, heterotroph, cells do not have cell walls

• eukaryotic, multicellular, heterotroph, cells have cell walls

• eukaryotic, multicellular, heterotroph, cells do not have cell walls

Multiple Choice

Segmentation is

• a way we group animals in the animal kingdom

• a series of sections that are exactly alike

• when animals have multiple distinct body parts

• a way animals distinguish themselves from others

Multiple Choice

Animals whose body parts are arranged in a circle around a center point have

• radial symmetry

• spherical symmetry

• asymmetry

• bilateral symmetry

Multiple Choice

When the anterior end of an animal has a gathering of sensory organs and nerve cells this is known as

• cephalization

• nervous system

• bilateral symmetry

• segmentation

Multiple Choice

Anterior means

• back side

• front side

• upper side

• lower side

Multiple Choice

Dorsal means

• back side

• front side

• upper side

• lower side