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Pre-AP Biology > Invertebrates > Flashcards

Invertebrates Flashcards

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4
Q

what are invertebrates?

A

animals without a backbone which display some type of symmetry

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27
Q

what are invertebrates?

A

animals without a backbone which display some type of symmetry

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27
Q

radial symmetry

A

when simular parts branch out in all directions from a central point

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28
Q

give examples of animals with radial symmetry

A

jellyfish, hydra, starfish

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28
Q

bilateral symmetry

A

simular halves on each side of a central plane

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29
Q

how can animals be divided?

A

right/left, dorsal/ventral. anterior/posterior

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29
Q

what do animals with bilateral symmetry tend to display?

A

cephalization

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30
Q

what is cephalization?

A

it means they display a brain and sensory structure(they have a head)

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30
Q

most animals have what type of symmetry?

A

bilateral

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31
Q

what does it mean to have segmentation?

A

to have simular, repeating, units

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31
Q

what are the two types of segmentation?

A

simple and complex

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32
Q

simple segmentation examples..

A

earthworm (all segments are the same as the next)

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32
Q

complex segmentation examples

A

crayfish ( segments are different and fused together to make a large head and chest segment)

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33
Q

what supports the body of an invertebrate?

A

an exoskeleton

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33
Q

what does an exoskeleton do?

A

protects the soft tissues of the body, it is made of chiten

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34
Q

bad parts of an exoskeleton?

A

limits size and movement, does not grow, has to molt to be regrown

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34
Q

what is phylum porifera?

A

its an all aquatic phyluim which are filled with pore bearing organisms.

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35
Q

what type of symmetry does porifera have?

A

asymmetrical

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35
Q

does porifera have tissues or organs?

A

no, this makes them the simplest phylum

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36
Q

how does porifera reproduce and get food?

A

gets food by filtering water through the pores and reproduces both sexually and sexually

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36
Q

what animals are in porifera?

A

has sponges

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37
Q

what is phyluim cnidaria?

A

it is an all aquatic phylum that are more specialized than sponges (more complex cells)

37
Q

What do organism in Cnidaria have?

A

Tentacles with stinging cells called nematocysts, triggers on their tentacles release poison whenever something comes in contact with them

38
Q

What type of symmetry does Cnidaria have?

A

radial

38
Q

How do Cnidaria reproduce?

A

mostly sexually, some asexually through budding

39
Q

what organisms can you find in cnidaria?

A

jellyfish, coral, sea anemones

39
Q

what is phylum ctenophora?

A

its a small phylum of about 100 aquatic species called ctenophores

39
Q

what do ctenophora look like?

A

they look like jellyfish, but don’t have stinging cells

40
Q

what do ctenophora use to capture their prey?

A

they use colloblast

40
Q

what is special about ctenophora?

A

they are iridescent, which means they capture or produce light, and they are hermaphroditic, which means they produce both egg and sperm but still reproduce sexually

41
Q

what is phylum platyhelminthes?

A

it is a slightly more complex phylum because they have tissues and organs

41
Q

what type of symmetry do playhelinthes have?

A

they have bilateral symmetry

42
Q

what are playhelminthes often called?

A

flatworms (most platyhelminthes are parasites)

42
Q

what species do platyhelminthes have?

A

fluke, plagnaria, tapeworm

43
Q

what is phylum nematoda?

A

parasitic or free-living phylum that are often called roundworms

43
Q

what type of symmetry do nematoda show?

A

bilateral

44
Q

what organisms are in nematoda?

A

ascaris, hookworms, trichinella

44
Q

give all the details of rotifera in one sentence

A

a small class that only has one species which are rotifers, they display bilateral symmetry and live in water

45
Q

what is phylum molluska?

A

members of this are called mollusks which are soft-bodied animals

45
Q

what do mollusks have?

A

they have a mantis that makes a shell to protect themselves

46
Q

how many species of mollusks are there?

A

there are over 112000 species, very diverse

46
Q

what type of symmetry do mollusks show?

A

bilateral

47
Q

what are some animals in phylum mollusk?

A

mussel, squid, snail

47
Q

what type of symmetry do organisms in phylum annelida show?

A

bilateral

48
Q

what do annelids have?

A

they have segmentation

48
Q

name some organisms in annelida

A

earthworm, leach, segmented worms

49
Q

what is phylum arthropoda?

A

it is a phylum of arthropods that have segmented bodies with appendages(legs or antennae) that is divided into 4 subphylum’s

49
Q

name the first subphylum of arthropod and tell me whats in it.

A

crustacea = crabs, crayfish

50
Q

name the second subphylum of arthropoda and tell me whats in it

A

chelicerata=scorpions, spiders, ticks

50
Q

name the third subphylum of arthropoda and tell me whats in it

A

uniramia = millapede, centipede, insects

51
Q

name the 4th subphylum of arthropoda and tell me whats in it.

A

trilobita =extinct insects(trilobites)

51
Q

what type of symmetry do organisms in echinordermata have?

A

radial symmetry

52
Q

whats special about the organisms in echinodermata?

A

they have no head or cephalization

52
Q

name some organisms in echinodermata

A

sea urchins, sand dollars, sea cucumbers

Pre-AP Biology (3 decks)

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