Invertebrates

Question 1

Animals that don’t have a backbone, but some have harder outer shells or exoskeletons for protection

Answer 1

Invertebrates

Question 2

Around ___% of all animals species are invertebrates

Answer 2

95%

Question 3

Invertebrates are incredibly diverse, with over how many different phyla?

Answer 3

30

Question 4

Most common phyla (8)

Answer 4

Porifera
Mollusca
Annelida
Echinodermata
Cnidarians
Platyhelminthes
Nematoda
Arthropoda

Question 5

A phylum of primitive invertebrate animals commonly known as ____

Answer 5

Porifera
Sponges

Question 6

Classes of sponges (4) and scientific name

Answer 6

Calcarea ( calcareous Sponges)
Hexactinellida (Glass sponges)
Demospongiae (Demosponges)
Homoscleromorpha (Encrusting sponges)

Question 7

Second largest phylum of invertebrate animals, after anthropoda.

Answer 7

Mollusca

Question 8

Are soft-bodied animals, typically with a muscular foot for locomotion, a mantle that secretes a calcareous shell, and visceral mass that contains the internal organs

Answer 8

Mollusca

Question 9

Classes of mollusks (8)

Answer 9

Aplacophora
Polyplacophora
Monoplacophora
Bivalvia
Gastropoda
Scaphopoda
Cephalopoda
Hyolitha

Question 10

Also known as ____ are a large phylum of invertebrate animals found in a variety of habitats, including marine, freshwater and terrestrial environment

Answer 10

Annelida
Segmented worms

Question 11

Classes of annelids (3)

Answer 11

Polychaetes
Oligochaetes
Hirudinea

Question 12

A phylum of marine invertebrates, easily recognizable by their radial symmetry and spiny skin.

Answer 12

Echinodermata

Question 13

Echinodermata comes from the greek words ____meaning ___ and ___ meaning ___ a reference to their characteristics spines or bumps that cover their bodies

Answer 13

Echinos
Spiny
Derma
Skin

Question 14

Classes of echinoderms and scientific name (5)

Answer 14

Asteroidea (sea stars)
Ophiuroidea (brittle stars)
Echinoidea (sea urchins and sand dollars)
Crinoidea (sea lilies and feather stars)
Holothuroidea (sea cucumber)

Question 15

A phylum of aquatic invertebrates. They are known for their stinging cells called ____

Answer 15

Cnidarians
Nematocyst

Question 16

Classes of cnidarians (4)

Answer 16

Anthozoa (sea anemones and corals)
Scyphozoa (true jellyfish)
Cubozoa (box jellyfish)
Hydrozoa

Question 17

Also known as ____ (from the greek ___ meaning ____“flat” and helminth meaning ___

Answer 17

Platyhelminthes
Flatworms
Platy
Helminth
Worm

Question 18

They are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates

Answer 18

Platyhelminthes

Question 19

Classes of flatworms (4)

Answer 19

Turbellaria (planarians)
Monogenea (monogenetic flukes)
Trematoda (flukes)
Cestoda (tapeworms)

Question 20

A phylum of invertebrate animals. Also known as ____ or ____

Answer 20

Nematodes
Roundworms
Eelworms

Question 21

They are one of the most abundant animal groups on earth, found in a wide variety of habitats including soil, freshwater, marine environment and even inside other animals as parasite

Answer 21

Nematoda

Question 22

Classes of nematodes (2)

Answer 22

Adenophorea
Secernentea

Question 23

Are invertebrates that make up about ___% of all the animals on earth

Answer 23

Arthropoda
75

Question 24

All share some common characteristics such as segmented bodies, jointed limbs and exoskeleton

Answer 24

Arthropoda

Question 25

Classes of arthropods (5)

Answer 25

Insecta Arachnida Chilopoda (centipede) Diplopida (millipede) Crustacea

Question 26

They are multicellular organisms that have a cellular grade of construction, meaning they lack true tissues and organs

Answer 26

Sponges

Question 27

Their bodies are permeated by ___ and ___ through which water flows

Answer 27

Sponges Canals Chambers

Question 28

Sponges are ___ that obtain nutrients from the water that passes through their bodies

Answer 28

Filter feeders

Question 29

These sponges have spicules made of calcium carbonate which is also the main component of seashells

Answer 29

Calcarea (calcareous Sponges)

Question 30

Typically small and delicate and are Found in shallow marine waters

Answer 30

Calcarea (calcareous Sponges)

Question 31

These sponges have a skeletal network of six pointed spicules made of silica, which is also the main component of glass

Answer 31

Hexactinellida ( glass sponges)

Question 32

Found in deep, cold marine waters and can grow to be quite large

Answer 32

Hexactinellida ( glass sponges)

Question 33

The largest and most diverse class of sponges, containing about __% of all known sponge species.

Answer 33

Demospongiae (Demosponges) 90%

Question 34

Can have spicules made of silica or spongin or a combination of both.

Answer 34

Demospongiae (Demosponges)

Question 35

Found in a wide range of habitats from freshwater to deep sea

Answer 35

Demospongiae (Demosponges)

Question 36

The rarest and most recently recognized class of sponges with only about ___ known species.

Answer 36

Homoscleromorpha ( Encrusting sponges) 117

Question 37

Have simple body structure and lack spicules altogether

Answer 37

Homoscleromorpha (Encrusting sponges)

Question 38

Found in marine waters, where they encrust on ROCKS and other hard surfaces

Answer 38

Homoscleromorpha ( Encrusting sponges)

Question 39

Second largest and soft-bodies animals, typically with a muscular foot for locomotion, a mantle that secretes a calcareous shell, and a visceral mass that contains the internal organs

Answer 39

Mollusca