Invertebrates

Question 4

what are invertebrates?

Answer 4

animals without a backbone which display some type of symmetry

Question 27

what are invertebrates?

Answer 27

animals without a backbone which display some type of symmetry

Question 27

radial symmetry

Answer 27

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

Question 28

give examples of animals with radial symmetry

Answer 28

jellyfish, hydra, starfish

Question 28

bilateral symmetry

Answer 28

simular halves on each side of a central plane

Question 29

how can animals be divided?

Answer 29

right/left, dorsal/ventral. anterior/posterior

Question 29

what do animals with bilateral symmetry tend to display?

Answer 29

cephalization

Question 30

what is cephalization?

Answer 30

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

Question 30

most animals have what type of symmetry?

Answer 30

bilateral

Question 31

what does it mean to have segmentation?

Answer 31

to have simular, repeating, units

Question 31

what are the two types of segmentation?

Answer 31

simple and complex

Question 32

simple segmentation examples..

Answer 32

earthworm (all segments are the same as the next)

Question 32

complex segmentation examples

Answer 32

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

Question 33

what supports the body of an invertebrate?

Answer 33

an exoskeleton

Question 33

what does an exoskeleton do?

Answer 33

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

Question 34

bad parts of an exoskeleton?

Answer 34

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

Question 34

what is phylum porifera?

Answer 34

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

Question 35

what type of symmetry does porifera have?

Answer 35

asymmetrical

Question 35

does porifera have tissues or organs?

Answer 35

no, this makes them the simplest phylum

Question 36

how does porifera reproduce and get food?

Answer 36

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

Question 36

what animals are in porifera?

Answer 36

has sponges

Question 37

what is phyluim cnidaria?

Answer 37

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

Question 37

What do organism in Cnidaria have?

Answer 37

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

Question 38

What type of symmetry does Cnidaria have?

Answer 38

radial

Question 38

How do Cnidaria reproduce?

Answer 38

mostly sexually, some asexually through budding

Question 39

what organisms can you find in cnidaria?

Answer 39

jellyfish, coral, sea anemones

Question 39

what is phylum ctenophora?

Answer 39

its a small phylum of about 100 aquatic species called ctenophores

Question 39

what do ctenophora look like?

Answer 39

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

Question 40

what do ctenophora use to capture their prey?

Answer 40

they use colloblast

Question 40

what is special about ctenophora?

Answer 40

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

Question 41

what is phylum platyhelminthes?

Answer 41

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

Question 41

what type of symmetry do playhelinthes have?

Answer 41

they have bilateral symmetry

Question 42

what are playhelminthes often called?

Answer 42

flatworms (most platyhelminthes are parasites)

Question 42

what species do platyhelminthes have?

Answer 42

fluke, plagnaria, tapeworm

Question 43

what is phylum nematoda?

Answer 43

parasitic or free-living phylum that are often called roundworms

Question 43

what type of symmetry do nematoda show?

Answer 43

bilateral

Question 44

what organisms are in nematoda?

Answer 44

ascaris, hookworms, trichinella

Question 44

give all the details of rotifera in one sentence

Answer 44

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

Question 45

what is phylum molluska?

Answer 45

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

Question 45

what do mollusks have?

Answer 45

they have a mantis that makes a shell to protect themselves

Question 46

how many species of mollusks are there?

Answer 46

there are over 112000 species, very diverse

Question 46

what type of symmetry do mollusks show?

Answer 46

bilateral

Question 47

what are some animals in phylum mollusk?

Answer 47

mussel, squid, snail

Question 47

what type of symmetry do organisms in phylum annelida show?

Answer 47

bilateral

Question 48

what do annelids have?

Answer 48

they have segmentation

Question 48

name some organisms in annelida

Answer 48

earthworm, leach, segmented worms

Question 49

what is phylum arthropoda?

Answer 49

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

Question 49

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

Answer 49

crustacea = crabs, crayfish

Question 50

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

Answer 50

chelicerata=scorpions, spiders, ticks

Question 50

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

Answer 50

uniramia = millapede, centipede, insects

Question 51

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

Answer 51

trilobita =extinct insects(trilobites)

Question 51

what type of symmetry do organisms in echinordermata have?

Answer 51

radial symmetry

Question 52

whats special about the organisms in echinodermata?

Answer 52

they have no head or cephalization

Question 52

name some organisms in echinodermata

Answer 52

sea urchins, sand dollars, sea cucumbers