6.08 Animals

Question 1

All animals:

Answer 1

have internal digestion

Question 2

Also animals…

Answer 2

are multicellular, heterotrophic , and consist of eukaryotic cells.

Question 3

All animals in summary have:

Answer 3

eukaryotic cells
multicellular tissues and organs
collagen-supported cell membranes
complex organ systems
internal digestion
advanced mobility
sexual reproduction

Question 4

Bilateral symmetry:

Answer 4

Right side mirrors the left side

Question 5

Radial symmetry:

Answer 5

Mirrors all sides

Question 6

Coelomates
Pseudocoelomates
Acoelomates

Answer 6

• have fluid and connective tissue within their body cavities that keep all their organs in place.
• have fluid protection, but they lack some of the connective tissue required to hold their organs in place.
• like the flatworm pictured, do not have a body cavity.

Question 7

protosomes

deuterostomes

Answer 7

• this means they develop a mouth first, and then growth continues until the anus is formed.
• their growth starts from the anus and continues to the mouth.