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SCIENCE > Mollusks, Arthropods And Echinoderms > Flashcards

Mollusks, Arthropods And Echinoderms Flashcards

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1
Q

Which two are characteristics of a mollusk?
A)vertebrate,
B) invertebrate
C) segmented body
D) unsegmented body

A

Invertebrate
Unsegmented body

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2
Q

What is the function of the hard outer shell of a mollusk?

A

Protects the mollusk’s soft body

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3
Q

What is the function on the mantle ?

A

Covers internal organs

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4
Q

What is the function of a mollusk’s foot?

A

Crawling, digging or catching prey

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5
Q

True or false? Mollusks are found only in dry places on land?

A

False

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6
Q

What type of symmetry do mollusks have?

A

Bilateral

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7
Q

What is the function of a gill

A

The remove oxygen from the water

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8
Q

What are cilia and what is the function of them?

A

They are tiny hairlike structures that move water over the gills

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9
Q

What are radula?

A

A flexible ribbon of tiny teeth that scrape food from a surface

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10
Q

What are four characteristics that biologist use to classify mollusks?

A

1- presence of a shell
2 type of shell
3 type of foot
4 complexity of the nervous system

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11
Q

What are the three major types of mollusks?

A

1- gastropods
2- bivalves
3- cephlapods

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12
Q

Mollusks that have a single shell are called?

A

Gastropods

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13
Q

What are bivalves?

A

Mollusks that have two shells held together by hinges and strong muscles

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14
Q

How are bivalves different from other mollusks?

A

Bivalves don’t have radulas . Instead most are filter feeders that strain tiny organisms from the water.

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15
Q

Which two are true about bivalves?
A) bivalves use gills to capture food
B) bivalves live on land
C) clams burrow in mud
D) a pearl forms in an oyster to protect the oyster from predators

A

They use their gills to capture food, clams burrow in mud

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16
Q

Mollusks whose feet are adapted to form tentacles around their mouths are ?

A

Cephalopods

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17
Q

What type cephalopod has a shell outside the body?
Nautilus, squid or octopus?

A

Nautilus

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18
Q

What type of cephalopod has no shell?

A

Octopus

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19
Q

What type of cephalopod has has a small shell inside their body?

A

Squid

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20
Q

How do cephalopods catch their food?

A

The capture prey by using muscular tentacles. The find this food they use their suckers.

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21
Q

Which 2 are true about cephalopods?
A) they have large eyes and a complex nervous system
B) they cannot remember things
C ) all live in the ocean
D) they swim by waving tentacles

A

They have large eyes, a complex nervous system and they all live in the ocean

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22
Q

Give a common example of each type of mollusk.

A

1) gastropod- slug
2) bivalve- clam
3) cephalopod- octopus

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23
Q

A row of teeth found in gastropods and cephalopods are called

A

Radula

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24
Q

The group of mollusks with the most complex nervous system of any invertebrate is the

A

Cephalopod group

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25
Q

What eats both plants and animals?

A

Omnivore

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26
Q

What is a two shelled mollusk?

A

Bivalve

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27
Q

A snail is an example of a

A

Gastropod

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28
Q

Most water dwelling mollusks have what part that removes oxygen from the water?

A

Gills

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29
Q

What are the major groups of arthropods ?

A

Crustaceans, arachnids, centipedes and millipedes and insects

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30
Q

Are arthropods invertebrates?

A

Yes

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31
Q

What are the characteristics of arthropods?

A

1- invertebrates
2- external skeletons
3) segmented bodies
4) jointed attachments ( appendages)

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32
Q

What are some examples of appendages?

A

Wings, legs

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33
Q

How does an exoskeleton help arthropods live on land?

A

It prevents the arthropod from drying out on land

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34
Q

When an arthropod grows what happens to the exoskeleton?

A

Molting : sheds and grows a new one

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35
Q

How many pairs of antennae do crustaceans have?

A

2

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36
Q

How many body sections do arachnids have?

A

2

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37
Q

How many pairs of legs do insects have?

A

3

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38
Q

True or false?
Joints in their appendages give arthropods flexibility and the ability to move

A

True

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39
Q

What is the function of the antennae?

A

They have sense organs for smelling, tasting and touching

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40
Q

What is the function of legs

A

Walking, catching prey, defending against predators

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41
Q

What is a crustacean?

A

An arthropod that has two or three body sections, five or more pairs of legs and two pairs of antennae

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42
Q

What is true about crustaceans?
A) get oxygen through gills
B) live only in dry areas
C) pistol shrimp eat dead plants and animals
D) krill are herbivores

A

They get oxygen through gills and krill are herbivores

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43
Q

Crustacean larvae develop into adults by?

A

Metamorphosis

44
Q

An arthropod with only 2 body section and four pairs of legs are

A

Arachnids

45
Q

What are characteristics of arachnids?
A) abdomen has reproductive organs
B) four pairs of legs
C ) four antennae
D) parasitic

A

Abdomen contains reproductive organs and four pairs of legs

46
Q

Are all spiders herbivores?

A

NO

47
Q

Do all spiders build webs to catch their prey?

A

NO

48
Q

Do spiders have hollow fangs that inject venom into prey?

A

YES

49
Q

Do spiders rarely bite people?

A

Yes

50
Q

Which one is a mite?
Black widow, chigger, brown recluse or a tarantula?

A

Chigger

51
Q

When are scorpions most active?

A

At night

52
Q

What does a scorpion have at the end of its abdomen to inject venom into prey?

A

Stinger

53
Q

What are ticks?

A

Parasites that live on the outside of a host animals body

54
Q

Which has two pairs of legs on each segment? A centipede or a millipede ?

A

Millipede

55
Q

What has one pair of legs on each segment? Centipede or millipede!?

A

Centipede

56
Q

Which is a predator that injects venom? Centipede or millipede

A

Centipede

57
Q

Which is a scavenger? Centipede or millipede?

A

Millipede

58
Q

An arthropods what protects it and keeps it from drying out?

A

Exoskeleton

59
Q

The heads of some arthropods have what which contain sense organs?

A

Antennae

60
Q

Some animals go through this process during their life cycle in which their bodies undergo dramatic changes in form as they develop . This is called

A

Metamorphosis

61
Q

The hind body section of an arachnid is called its

A

Abdomen

62
Q

The process of shedding the outgrown exoskeleton is called

A

Molting

63
Q

What are the steps of metamorphosis in an insect?

A

Egg- larvae- pupa- adult insect

64
Q

What is an insect?

A

Arthropods, three body sections, six legs, one pair on antennae, and usually one or two pair of wings

65
Q

What body section are the wings and legs attached?

A

Thorax

66
Q

What do insects have two of that contain many lenses?

A

Compound eyes

67
Q

How do insects get oxygen in their bodies ?

A

Through a system of tubes

68
Q

Do some insects feed on the blood of living animals ?

A

Yes, true

69
Q

How do insects get food? What do they use ?

A

By using mouthparts that are highly specialized

70
Q

In gradual metamorphosis the egg hatches into a (——-) which looks like a small adult

A

Nymph

71
Q

What is a food chain?

A

A series of events in which organisms eat each other and get energy

72
Q

What is the study of food chains and other ways organisms interact with their environments?

A

Ecology

73
Q

What does a food chain start with?

A

A producer

74
Q

What is a producer?

A

An organism that makes their own food ( plant)

75
Q

What are consumers?

A

Organisms that obtain energy by eating other organisms ( some eat producers( plants) others eat other consumers)

76
Q

What is a decomposer?

A

Breaks down wares and dead bodies of other organisms

77
Q

Is the following true or false? About 50 % of crops grown for human consumption are eaten by insects

A

False

78
Q

True or false: insects play key roles in food chains

A

True

79
Q

An organism that eats wastes and dead organisms is called a

A

Decomposer

80
Q

What does a pollinator do?

A

A pollinator carries pollen from one plant to another of the same species so that they can reproduce

81
Q

What are two types of insects that can spread disease?

A

Mosquitoes and fleas

82
Q

True or false? Pesticides used to kill harmful insects can also kill pollinators and can harm other animals

A

TRUE

83
Q

A method of Introducing natural insect predators or natural insect diseases to get rid of harmful insects is called

A

Biological control

84
Q

Insects play a key role in?

A

Food chains

85
Q

All insects are:

A

Consumers

86
Q

Insects used for biological control include

A

Ladybugs

87
Q

People sometimes use chemical called what to try to kill harmful insects

A

Pesticides

88
Q

What is animal called that carries pollen from one plant to another

A

Pollinator

89
Q

What is an echinoderm?

A

Invertebrate, internal skeleton, system of fluid filled tubes called a water vascular system

90
Q

What are tube feet?

A

They are potions of the tubes that squeeze together forcing water into the structure

91
Q

What is a water vascular system?

A

The internal system of fluid filled tubes in echinoderms

92
Q

Can you label the main parts of a sea stars vascular system in a diagram?

A

Know tube feet, where the opening for water is and where the water vascular system is

93
Q

Is the following true or false? A sea star forces its stomach into the opening of a clams shell to digest the clams body

A

True

94
Q

How do brittle stars get food?

A

Tube feet

95
Q

How do brittle stars move?

A

Slither in a snakelike motion

96
Q

How do sea urchins get food?

A

Scrape food with with five teeth like structures they project from their mouth

97
Q

How do sea urchins move?

A

Bands of tube feet that extent out between their spines

98
Q

How do sea cucumbers get their food?

A

Lengthen their tentacles to sweet food toward its mouth

99
Q

How do sea cucumbers move?

A

Rows of tube feet on their underside

100
Q

Which of the following is NOT an echinoderm?
Fiddler crab, brittle star, sea urchin or sea cucumber

A

Fiddler crab

101
Q

Do tube feet digest food?

A

NO the help echinoderms move along the ocean floor, catch food and grip surfaces

102
Q

How does a sea star captures its food?

A

Uses five arms to grasp a clam, then it pulls on the tightly closed shell with its tube feet, when the shell opens, the sea star forces its stomach out of its mouth and into the opening between the clams shell . Digestive chemicals then break down the clams tissues and the sea star sucks in

103
Q

What consists of fluid filled tubes within the echinoderms body?

A

The water vascular system

104
Q

What does an echinoderms have that supports its body?

A

Endoskeleton

105
Q

Animals that live in what phylum are radially symmetrical invertebrates that live on the ocean floor?

A

Echinoderm

SCIENCE (5 decks)

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