Ch. 32 Overview of animal diversity

Question 1

What is an animal?

Answer 1

Multicellular eukaryotes with tissues that develop from embryonic layers.

Question 3

What is the process of gastrulation?

Answer 3

Blastula forms a small crease (blastopore), forming the archenteron (gut) in which reaches the surface of the now formed embryo

Question 4

What is protostome developement?

Answer 4

• initial determination of what the cell can do.
• Spiral and determinate

Question 5

Deuterostomes

Answer 5

• identical twins
• radial, indeterminate

Question 6

Evolution of animal complexity

Question 7

Radial symmetry

Answer 7

Mirror images (no left or right)
Ex: jelly fish and sea anemones.

Question 8

Bilateral symmetry

Answer 8

one plain , mirror images with left and right,dorsal & ventral, head and tail.
Ex: Humans, dogs, fish

Question 9

Asymmetrical

Answer 9

no symmetry
example: sponges

Question 10

Animal epthiel tissues

Answer 10

• Covers the body and lines internal organs.
• protection, absorption & secretion
  Examples: skin, and lining of the digestive tract.

Question 11

Connective Tissues provide

Answer 11

support and structure
Ex: bones, cartilage and blood

Question 12

Muscle tissue provides

Answer 12

contraction and movement
3 types: skeletal, smooth, cardiac

Question 13

Nervous Tissues are responsible for

Answer 13

transmitting and processing information.
Ex: spinal cord, brain, nerves

Question 14

No cavity organisms

Answer 14

flat and compact and allow circulation and moving things around like oxygen

Question 15

Hemocoel

Answer 15

A split between the endoderm(digestive tract) and mesoderm (muscle layer)

Question 16

In hemoceal animals the ectoderm , mesoderm and endoderm are what?

Answer 16

Ectoderm= body covering
mesoderm= muscle layer
endoderm= digestive tract

Question 17

Coelom

Answer 17

Body cavity that develops from a split in the mesoderm. Both sides have mesoderm tissues.