Exam 7 - Invertebrates

Question 1

Define bilateral Symmetry and give examples

Answer 1

A divisible bodily symmetry that yields only 2 mirror images when split down a central plane

bi = two, lateral = to the side

Ex: more complex organisms like humans, dogs, cats, birds, worms, etc.

Question 2

Define radial Symmetry and give examples

Answer 2

A bodily symmetry that when divided can produce many mirror images do its circular form

radial = circular

Ex: less complex organisms like jellyfish, starfish, sea anemone, sea urchin(Sponges don’t have any symmetry)

Question 3

What are invertebrates?

Answer 3

Animals that lack a backbone or notochord

Question 4

What are endotherms and give some examples

Answer 4

warm-blooded animals that can maintain their internal body temperature on their own; not dependent upon their enviornment

(Endo = inside, within) therm = temperature

Mammals and Birds: Humans, dogs, whales, eagles, owls, chickens

Question 5

What are ectotherms and give some examples

Answer 5

cold-blooded animals that rely upon their enviornment for their internal body temperature; cannot self-regulate body temperature

ecto - outside/external, therm - temperature

Reptiles, amphibians, fish, invertebrates = sharks, frogs, clownfish, lizard, snake, alligator, mollusks, arthropods

Question 6

What is the phylum name for sponges?

Answer 6

Porifera

Question 7

What is the phylum name for jellyfish, sea anemone, corals?

Answer 7

Cnidarians

Question 8

What is the phylum name for segemented worms like earthworms?

Answer 8

Annelida

Question 9

What is the phylum name for sea stars, sea urchins, sea cucumbers?

Answer 9

Echinoderms

Question 10

What is the phylum name for octupi, clams, nautilus, snails, etc.?

Answer 10

Mollusca (mollusks)

Question 11

What are gastropods?

Answer 11

mollusks like snails, slugs, crawl on their stomach

Gastro - stomach , pod - foot

Question 12

what are cephalopods?

Answer 12

mollusks like octopus and squids that have their feet attached to their head

cephalo - head, pod - foot

Question 13

What are bivalves

Answer 13

Mollusks that have a two-pieced, hinged shell such as clams, oysters, and scallops.

bi - two, valve - folding door

Question 14

What is an exoskeleton?

Answer 14

A hard, external skeleton found in mollusks and arthropods typically made of a material called “Chitin”

exo - outside,

Question 15

What phylum are insects, crustaceans, spiders, scorpions, etc.?

Answer 15

Arthropods

Arthro - joint, pod - foot.

Remember, key characteristic of arthropods is** jointed appendages**

Question 16

What is the simple brain of a worm called?

What is it called?

E 15

Answer 16

ganglion

E 15

Question 17

What are the 5 characteristics of all invertebrates

A

Answer 17

Eukaryotic, Multicellular, Consumer, Move on their own, and Reproduce sexually

Question 18

What is Entomology?

B

Answer 18

study of insects.

Question 19

What is Zoology?

A

Answer 19

study of animals

A

Question 20

name some crustaceans and where they live mainly

Answer 20

lobster, crabs, and pill bugs. Most of them live in the ocean and freshwater.

think of the guy from spongebob mr crab he is a crustacean

B 10

Question 21

What are the 3 features of Arthropods?

A

Answer 21

Segmented body, Jointed appendages, and an exoskeleton.

Question 22

What is metamorphisis ?

Answer 22

metamorphism is a change in body form from embryo to adult

Question 23

How do Bivalves eat?

A

Answer 23

Filter Feeding

A

Question 24

Clams, Scallops, and Muscles are in _____________ group

Answer 24

Bivalves

Question 25

do planarians have radial symmetry? ## Footnote E

Answer 25

no they have bilateral

Question 26

what are some examples of mollusks? ## Footnote B

Answer 26

octopus, clams, snails, slugs, etc. ## Footnote B

Question 27

Question: How does an octopus create a smoke screen as a defense mechanism?

Answer 27

Answer: Ink

Question 28

Snails and slugs are examples of the class... ## Footnote A

Answer 28

Gastropoda ## Footnote A

Question 31

what phylum includes clams, octopus, snails, and slugs ## Footnote b

Answer 31

mollusca

Question 32

What is a siphon in octopuses ## Footnote E 15

Answer 32

A siphon is a muscular tube that water is forced out of for jet propulsion ## Footnote E 15

Question 34

If a new type of arthropod is discovered and it has many eyes within an eye, what would we call this type of eyes? ## Footnote A

Answer 34

Compound Eyes ## Footnote A

Question 35

t/f octopi are echinoderms

Answer 35

no they are mollusks

Question 36

What are some qualites about the Octopus? | (E21) C7 Octopus Protection

Answer 36

They can move quickly, have a siphon, smoke screen,escape without being seen.

Question 38

what material are the arthopods exoskeleton made of? ## Footnote b

Answer 38

chitin

Question 39

How to sponges feed? ## Footnote group b

Answer 39

They filter feed.

Question 40

what is sessile

Answer 40

unable to move from place to place

Question 41

do we have open or closed circulatory systems?

Answer 41

we have closed

Question 42

what are some examples of invertebrates? ## Footnote b

Answer 42

ants, jelly fish, earthworms, sponges, etc...

Question 43

What do sensory Reptors