Exam 7 - Invertebrates Flashcards

1
Q

Define bilateral Symmetry and give examples

A

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.

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2
Q

Define radial Symmetry and give examples

A

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)

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3
Q

What are invertebrates?

A

Animals that lack a backbone or notochord

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4
Q

What are endotherms and give some examples

A

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

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5
Q

What are ectotherms and give some examples

A

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

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6
Q

What is the phylum name for sponges?

A

Porifera

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7
Q

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

A

Cnidarians

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8
Q

What is the phylum name for segemented worms like earthworms?

A

Annelida

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9
Q

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

A

Echinoderms

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10
Q

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

A

Mollusca (mollusks)

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11
Q

What are gastropods?

A

mollusks like snails, slugs, crawl on their stomach

Gastro - stomach , pod - foot

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12
Q

what are cephalopods?

A

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

cephalo - head, pod - foot

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13
Q

What are bivalves

A

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

bi - two, valve - folding door

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14
Q

What is an exoskeleton?

A

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

exo - outside,

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15
Q

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

A

Arthropods

Arthro - joint, pod - foot.

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

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16
Q

What is the simple brain of a worm called?

What is it called?

E 15

A

ganglion

E 15

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17
Q

What are the 5 characteristics of all invertebrates

A

A

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

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18
Q

What is Entomology?

B

A

study of insects.

19
Q

What is Zoology?

A

A

study of animals

A

20
Q

name some crustaceans and where they live mainly

A

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

21
Q

What are the 3 features of Arthropods?

A

A

Segmented body, Jointed appendages, and an exoskeleton.

22
Q

What is metamorphisis ?

A

metamorphism is a change in body form from embryo to adult

23
Q

How do Bivalves eat?

A

A

Filter Feeding

A

24
Q

Clams, Scallops, and Muscles are in _____________ group

A

Bivalves

25
Q

do planarians have radial symmetry?

E

A

no they have bilateral

26
Q

what are some examples of mollusks?

B

A

octopus, clams, snails, slugs, etc.

B

27
Q

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

A

Answer: Ink

28
Q

Snails and slugs are examples of the class…

A

A

Gastropoda

A

29
Q
A
30
Q
A
31
Q

what phylum includes clams, octopus, snails, and slugs

b

A

mollusca

32
Q

What is a siphon in octopuses

E 15

A

A siphon is a muscular tube that water is forced out of for jet propulsion

E 15

33
Q
A
34
Q

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

A

A

Compound Eyes

A

35
Q

t/f octopi are echinoderms

A

no they are mollusks

36
Q

What are some qualites about the Octopus?

(E21) C7 Octopus Protection

A

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

37
Q
A
38
Q

what material are the arthopods exoskeleton made of?

b

A

chitin

39
Q

How to sponges feed?

group b

A

They filter feed.

40
Q

what is sessile

A

unable to move from place to place

41
Q

do we have open or closed circulatory systems?

A

we have closed

42
Q

what are some examples of invertebrates?

b

A

ants, jelly fish, earthworms, sponges, etc…

43
Q

What do sensory Reptors

A
44
Q
A