Chapter 11 Animal Diversification

Question 1

Animals are part of ?

Answer 1

Eukarya domain.

Question 2

Humans are ?

Answer 2

• animals

- we have eukarya cells

Question 3

What is an animal ?

Three key characteristics.

Answer 3

1-animals eat other organism.
2- animals move - at least at some stage on their life cycle (sponge)
3- animals are multi-cellular
- not all animals have heads or eyes.

Question 4

Higher or lower species

Answer 4

• no such thing
• two possible states for a species
• extant= currently exist
• extinct = no longer exist

Question 5

All organism to exist do the following.

Answer 5

• find food
• escape predators
• reproduce

Question 6

Four key distinctions decide the animals.

Answer 6

1- Sponges have no tissue
2- Radial symmetry
3- Gut development
4-How does growth occur

Question 7

Radial symmetry

Answer 7

• body structure like a pie.
• jelly fish.
• sea anemone
• slow or free floating

Question 8

Bilateral symmetry

Answer 8

• a body with a left and right side
• better at searching for food
• faster moving
• humans , cows , frogs

Question 9

Protostomes

Answer 9

Mouth first

Question 10

Deuterostones

Answer 10

Anus first (humans)

Question 11

How does growth occur?

Answer 11

• Some animals molt

- Arthropods

Question 12

Iverterbrates

Answer 12

• animals without a back bone
• most diverse group
• sponges
• arthropods
• cnidarians

Question 13

Sponges

Answer 13

• Have no tissue

- simplest of all animals

Question 14

Sessile

Answer 14

• attached to a surface

- doesn’t move

Question 15

Cnidarians

Answer 15

• poisonous animals
• coral
• sea anemones
• jelly fish
• paralyze pray
• radially symmetrical

Question 16

Forms of cnidarians

Answer 16

• two forms
• sessile polyp (tree like)
• free floating medusa( jelly fish)
• cnidarians (carnivores)
• reproduce both ways sexually asexually

Question 17

Coral reefs

Answer 17

• living algae
• algae do photosynthesis
• algae dislikes hot water.

Question 18

Flatworms

Answer 18

• parasites
• brilliantly colored
• taper worms
• free living aquatic creatures

Question 19

Fiction of a flatworm

Answer 19

• eat and poop through same hole

- no digestive system ( tape worms)

Question 20

Round worm

Answer 20

• grow by molting

- parasites of vertebrate animals

Question 21

Annelids

Answer 21

• have visible segments
• earth worms
• leeches

Question 22

Mollusks

Answer 22

• most have a shell

- slugs or octopus do not have shell

Question 23

Major groups mollusks

Answer 23

• Gastropods
• bivalves
• cephalopods

Question 24

Gastropods

Answer 24

• snails
• slugs
• 75% of mollusks

Question 25

Bivalves

Answer 25

- clams - oysters - mossels - have to shells

Question 26

Cephalopod

Answer 26

- squid - octopus - nautiluses

Question 27

Arthropods are

Answer 27

- most diverse group | - 75% of all animals species

Question 28

What are arthropods

Answer 28

- most insects - ants - centipedes - jumping spider ( arachnids) - they all molt

Question 29

Insects

Answer 29

- outnumber other forms of life - 320,000 better species - flight and metamorphosis (success)

Question 30

Species metamorphosis steps

Answer 30

- Larva- an egg hatches into a larva - pupa -larva incloses itself in a shelf - adult - adult emerges from pupa

Question 31

Incomplete metamorphosis

Answer 31

- smaller version of adult(nymph) - molts several times - grass hopper