All About Invertebrates

Question 1

How many species of Cnidaria are there estimated to be?

Answer 1

9000

Question 2

What type of symmetry do cnidarians have?

Answer 2

Radial

Question 3

How many layers of tissue do cnidarians have?

Answer 3

2 they are diplobastic

They are the outer epidermis (skin like) and the inner gastrodermis

Question 4

They have a _______ gut which means that the gastrovascular cavity has a ____ opening for the mouth and anus

Answer 4

Hollow

Single/1

Question 5

What shape are cnidarians?

Answer 5

Tubular or bell shaped with the tentacles surrounding the mouth/anus

Question 6

Invertebrates include….?

Answer 6

Sponges
Cnidarians
Flatworms
Roundworms
Segmented worms/Annelida
Mollusks
Arthropods
And echinoderms

Question 7

Cnidarians are the only animals with ___________ (stinging cells) found in the __________.

Answer 7

Cnidocytes

Tentacles

Question 8

What is a Nematocyst?

Answer 8

They are coiled, harpoon-like stingers inside the cnidocyte that shoots out and poisons/paralyzes prey

Question 9

Besides the cnidocytes to catch prey the tentacles also have the job of doing what for the cnidarian?

Answer 9

Bringing food to the mouth

Question 10

How does a cnidarian digest food?

Answer 10

The inner gastrodermis secretes digestive juices into the gastrovascular cavity which digests the food and circulates the nutrients.

Question 11

Cnidarians have a ________ nerve net and sensory receptors….

Answer 11

Simple

Question 12

What is Mesoglea?

Answer 12

It is the gell fluid in between the gastroderm and epidermis that allows the animal to float.

Question 13

In a cnidarian, if the shape is a bell, the Mesoglea is thick and the tentacles go downward then what is it called?
( not named “jellyfish”)

Answer 13

Medusa

Question 14

If in a cnidarians the shape is tubular, the Mesoglea is thin and the tentacles face up then what is it called?
( not named “sea anemone”)

Answer 14

Polyp

Question 15

Scyphozoan is another name for what cnidarian?

Answer 15

Jellyfish

Question 16

Anthozoan is another name for what cnidarian ?

Answer 16

Sea anemone

Question 17

Name 3 characteristics of a “Hydra” about its origin, reproduction, and habitat

Answer 17

Only polyps
Reproduce by budding
And they live in freshwater

Question 18

A Portuguese Man-Of-War is a colonial ___________, meaning that it is not just one single organism

Answer 18

Hydrozoan

Question 19

The root word of Ctenophorans is cteno which means….?

Answer 19

Section or plates

Question 20

Ctenophorans are also called….?

Answer 20

Comb jellies

Question 21

All comb jellies (ctenophorans) live in what habitat

A) freshwater
Or
B) marine

Answer 21

B) marine

Question 22

There are approximately how many species of comb jellies?

Answer 22

100

Question 23

The comb jellies may be 3 shapes in appearance… What are they?

Answer 23

Spherical, ovoid, or elongated

Question 24

A special trait about Combe jellies are that they are ________________ which means they take chemicals from the food they eat to create this effect.

Answer 24

Bioluminescent

Question 25

While comb jellies have different appearances, they all have one type of symmetry. What is it?

Answer 25

Radial symmetry

Question 26

Referring to the root word of ctenophorans, cteno( section or plates), how many plates of fused cilia do comb jellies have that resemble combs?

Answer 26

8

Question 27

How do comb jellies move?

Answer 27

They move by beating the cilia

Question 28

Most of the body of a ctenophoran is made up of.....?

Answer 28

Mesoglea | Gell fluid in b/twn the gastroderm and epidermis that allows them to float

Question 29

The body and tentacles of the cone jellies covered with.......... To catch prey

Answer 29

Sticky mucus

Question 30

How many different species of animals inhabit the earth?

Answer 30

9-10 million

Question 31

Where do most animals live on earth?

Answer 31

The seas

Question 32

What are the names of the 7 basic levels of the taxonomy hierarchy? And what is the mnemonic given to remember it?

Answer 32

Kingdom, phylum, class, order, family, genus, species | Changeable depending on teacher King Phillip Came Over From Germany Stoned

Question 33

How many species are classified as Porifera

Answer 33

5000

Question 34

Poriferans don't have mouths; instead they have.....

Answer 34

Tiny pores in the outer walls

Question 35

Poriferans is another name for what animal?

Answer 35

Sponges

Question 36

What names are given for the three primary shapes of sponges?

Answer 36

Asconoid Syconold Leuconoid

Question 37

What are the characteristics of an Asconoid shape for sponges?

Answer 37

They are tubular with pores

Question 38

What are the characteristics for Syconold shape of sponges?

Answer 38

Large tub with single osculum

Question 39

What are the characteristics of sponges for Leuconoid shape?

Answer 39

Largest and most complex

Question 40

What are the 2 purposes for collar cells in sponges?

Answer 40

To beat the flagella back and forth to force water through the sponge and pick up tiny bits of food

Question 41

What 2 substances compose the skeleton of the sponge?

Answer 41

Spicules and spongin

Question 42

What type of sponge is large enough for a diver to go inside the osculum?

Answer 42

Barrel sponges

Question 43

What is another name for the Kingdom Animalia?

Answer 43

Metazoa

Question 44

What 2 classifications levels are not found in Kingdom Animalia?

Answer 44

Prokaryotes or Protista/ Protists

Question 45

What 2 characteristics are shared by all animals?

Answer 45

They multicellular and heterotrophic

Question 46

What group of animals contains the most species?

Answer 46

Insects

Question 47

Cnidarians have....... Symmetry A) Radial Or B) Biradial

Answer 47

A) radial

Question 48

What is the most dangerous kind of jellyfish?

Answer 48

Box jellyfish

Question 49

In what ocean of what country can the box jelly be found?

Answer 49

It can be found in warm coastal waters all around the world but the deadliest live in the Indo- Pacific region

Question 50

What color is dead coral?

Answer 50

Whitish or light colored

Question 51

What makes living coral different colored?

Answer 51

Zooxanthellae

Question 52

Platyhelminthes or flatworms are often mistaken for what?

Answer 52

Sea slugs

Question 53

Regeneration for a Platyhelminthe means...?

Answer 53

The ability to grow back a head or grow more worms off of pieces of the body

Question 54

Mimicry is...?

Answer 54

Mimicking colors that mean toxicity so that the animals that would normally eat them leave them be

Question 55

Polyclad flatworms are cephalized. What does this mean?

Answer 55

They have an unidentifiable head region

Question 56

Cephalopoda have these characteristics...

Answer 56

- change color faster than a chameleon - changes texture and body shape - has 3 hearts pumping blue blood - has jet propulsion - has species in all oceans of the world

Question 57

What does the word Cephalopoda mean?

Answer 57

Head foot

Question 58

What animals are thought to have highly developed senses, including a large brain, and are thought to be the most intelligent of the invertebrates?

Answer 58

Most mollusks

Question 59

Do cuttlefish, squid, and octopuses have shells?

Answer 59

No

Question 60

How many living species of Cephalopods are on Earth today?

Answer 60

800

Question 61

What color is Cephalopod blood?

Answer 61

Blue

Question 62

What makes cephalopod blood the color it is?

Answer 62

Because it binds oxygen using a blue/copper- containing protein called hemocyanin

Question 63

Do octopuses eat their own arms?

Answer 63

Only under extreme stress or "autophagy" (disease)

Question 64

What is the biggest species of octopus?

Answer 64

Giant pacific octopus ( Enteroctopus dofleini)

Question 65

What 2 substances mix together to form the ink of a squid?

Answer 65

Melanin and mucus

Question 66

Can octopuses walk outside of water?

Answer 66

Yes

Question 67

What is a group of squid called?

Answer 67

A shoal or squad

Question 68

What are 4 organ systems found in Annelids

Answer 68

1) circulatory system w/ 5 aortic arches 2) digestive tract 3) small brain (dorsal side of pharynx 4) clitellum

Question 69

What are 3 types of animals found in Phylum Annelida

Answer 69

Earthworms, leeches, and lugworms

Question 70

Which one of these 3 Annelids is marine? A) earthworm B) leech C) lugworm

Answer 70

C) lugworm

Question 71

How many different species are found in the Phylum Annelida?

Answer 71

Around 9000

Question 72

What are 3 examples of Polychaetes?

Answer 72

Lugworms, clam worms, and bristleworms

Question 73

What are 3 basic characteristics of echinoderms?

Answer 73

1) water vascular system 2) 5 part symmetry 3) endoskeletal elements

Question 74

How many living species of echinoderms are there?

Answer 74

Around 7000

Question 75

Where are all species of echinoderms found?

Answer 75

In the sea

Question 76

What is the meaning of a the word "echinoderm"

Answer 76

A marine invertebrate of the phylum Echinodermata

Question 77

Do parent echinoderms raise their young?

Answer 77

No

Question 78

What is the common name of Arthropods in the class pycnogonida?

Answer 78

Sea spider

Question 79

What are the common names of 5 different animals found in Subphylum Crustacea?

Answer 79

Crabs, lobsters, shrimp, barnacles, woodlice

Question 80

What living animal belongs to the Class Merostomata?

Answer 80

Horseshoe crab

Question 81

Give an example of an animal in Class Chilopoda

Answer 81

Centipede

Question 82

Give an example of an animal in the Class Diplopoda

Answer 82

Millipede

Question 83

Define archaeocyte ( amoebocyte )

Answer 83

Cells with pseudopods, located in the mesohyl they are used in processing food, distributing it to other cells, and for other functions

Question 84

Define choanocyte

Answer 84

Also called the collar cell, the cells line the inner cavity of the sponge and have a flagellum. The sponge obtains its nutrients and oxygen by processing flowing water using choanocytes

Question 85

Epidermis (pinacocyte)

Answer 85

The epidermis is the layer of cells that covers the outer surface of the sponge. The thin, flattened cells of the epidermis are called Pinacocytes

Question 86

Flagellum

Answer 86

The whip like structure of a Choanocyte; the flagellum moves, pushing water (which contains nourishment ) through the sponge

Question 87

Mesohyl (mesenchyme)

Answer 87

The gelatinous layer between the outer body of the sponge and the spongocoel (the inner cavity)

Question 88

Spicule

Answer 88

Spicules are sharp spikes (made of calcium carbonate) located in the mesohyl. spicules form the "skeleton" of many sponges