Animal Design - Lecture 17

Flashcards covering essential concepts and definitions from Lecture 17 on Animal Design, focusing on body plans, symmetry, and developmental stages.

Animal body plans are characterized by __, tissues, body cavities, and types of development.

symmetry

Animals can be classified as __ or deuterostomes based on their developmental patterns.

protostomes

In bilateral symmetry, body parts are arranged around __ axes of orientation.

two

The __ is a body cavity that is surrounded by tissues derived from mesoderm.

coelom

The fate of the blastopore in protostomes is that it becomes the __.

mouth

Diploblastic animals have __ germ layers: ectoderm and endoderm.

two

The __ is the layer that covers the surface of the embryo and gives rise to the outer covering and central nervous system.

ectoderm

Animals with __ development exhibit spiral and determinate cleavage.

protostome

During gastrulation, the formation of a gastrula results in the establishment of different layers of __ tissues.

embryonic

All eumetazoans, except for sponges, are characterized by possessing __.

tissues

What characterizes animal body plans?

Animal body plans are characterized by symmetry, tissues, body cavities, and types of development.

What are the two classifications of animals based on developmental patterns?

Animals can be classified as protostomes or deuterostomes.

How are body parts arranged in bilateral symmetry?

In bilateral symmetry, body parts are arranged around two axes of orientation.

What is the coelom?

The coelom is a body cavity that is surrounded by tissues derived from mesoderm.

What does the blastopore become in protostomes?

In protostomes, the blastopore becomes the mouth.

How many germ layers do diploblastic animals have?

Diploblastic animals have two germ layers: ectoderm and endoderm.

What does the ectoderm develop into?

The ectoderm covers the surface of the embryo and gives rise to the outer covering and central nervous system.

What type of development exhibits spiral and determinate cleavage?

Protostomes exhibit spiral and determinate cleavage.

What results from the formation of a gastrula during gastrulation?

The formation of a gastrula results in the establishment of different layers of embryonic tissues.

What do all eumetazoans, except for sponges, possess?

All eumetazoans, except for sponges, are characterized by possessing tissues.