bio test 3

Question 1

Oldest type of animal
* Barely multicellular
Three types of cells
Obtain food through filter feeding
Live mainly in ocean, but some freshwater

Answer 1

sponges

Question 2

Entirely aquatic
* Radial symmetry
* Two growth forms:
– Polyp
– Medusa
Gastrovascular Cavity – incomplete digestive
system
* Nematocyts

Answer 2

Cnidarians

Question 3

Flatworms
* Entirely aquatic or at least moist soil
* Bilateral symmetry
* Simple sense organs
Some are free-living, many are parasites

Answer 3

Platyhelminthes Characteristics

Question 4

Segmented worms
* Aquatic or in moist soils
* Most free-living
– Detritovores
– Filter feeders
Some are parasites
* Earthworms, feather duster worms, leeches

Answer 4

Annelida

Question 5

The second largest phylum
– 90,000 living spp
* Have colonized almost all habitats –
deepest ocean to forests to deserts
Well-developed organ systems
* Includes:
– Snails, Slugs, Clams, Mussels, Oysters,
Squids, Octopuses, and Nautiluses

Answer 5

Mollusca

Question 6

a tonguelike organ with teeth in mollusks like snails

Answer 6

radula

Question 7

Eat plankton and detritous
filter feeders

Answer 7

Bivalve

Question 8

High levels of
intelligence
* Predators
* Found in ocean
only

Answer 8

Cephalopods

Question 9

Overwhelming majority of phylum
Chordata
64,000 spp. described
– 4% of all described animal spp.
– Jawless fish, jawed vertebrates (including
sharks and rays), and bony fish

Answer 9

The vertebrates

Question 10

not Jaw =

Answer 10

Agnathans

Question 11

Jawless fish-like creatures
– Hagfishes
– lampreys
* Oldest group of vertebrates
Largely marine, some freshwater
* Scavengers or parasites

Answer 11

Agnathans

Question 12

vertebrates with jaws

Answer 12

Gnathostomes

Question 13

cartilage fish =

Answer 13

Chondrichthyes

Question 14

Jawed fishes with cartilaginous skeleton
* Mainly marine, few freshwater
* Many are predatory, some filter feeders
3 main groups: chimeras, skates/rays,
sharks

Answer 14

Chondrichthyes

Question 15

having rays and fin

Answer 15

Actinopterygii

Question 16

Fishes with bony skeleton and flimsy ray
fins
* Most diverse group of vertebrates
* Most predators, but herbivores, frugivores,
filter-feeders
* Found in nearly every aquatic habitat

Answer 16

Actinopterygii

Question 17

Most spp spawn eggs
– Fertilized externally
– Male insemination after female lays eggs
– Eggs desiccate under dry conditions

Answer 17

Bony Fish Reproduction

Question 18

Lobe-finned fishes
* Only 8 spp living
* Fins attached to body via bone
Lungs and Gills
* Large, fleshy pectoral fins

Answer 18

Sarcopterygii

Question 19

Which of these terms does NOT go with the kingdom Animalia

Answer 19

Unicellular

Question 20

Pizza! what kind of symmetry does this pizza have

Answer 20

radial symmetry

Question 21

Which of these groups are called flatworms

Answer 21

Platyhelminthes

Question 22

Which of these groups has far and away more species than the others?

Answer 22

Insects

Question 23

Vertebrate animals like salamanders make up a majority of all animal species

Answer 23

False

Question 24

Which of these is the oldest group of vertebrate animals

Answer 24

lampreys and hagfishes

Question 25

Which of these characters does NOT apply to the chondrichthyes?

Answer 25

Bony skeleton

Question 26

What are the fleshy, lobed fins of sarcopterygians an adaption for

Answer 26

Navigating through shallow weedy waters

Question 27

Fish (Actinopterygii) eggs are fertilized internally, meaning that the sperm fertilizes the egg inside the female’s body.

Answer 27

False