phylums

Question 1

Stinging organelle

Answer 1

Nematocyst

Question 2

Most primitive of eumatozoans

Answer 2

Cnidarians

Question 3

ability to shred in round worms

Answer 3

ecdysis

Question 4

hallow tube for swallowing bacteria

Answer 4

stoma

Question 5

shell in squid

Answer 5

pen

Question 6

these are hydras, jelly fishes, sea anemones, corals etc

Answer 6

phylum cnidaria

Question 7

these are sponges

Answer 7

phylum porifera

Question 8

this is known as pore bearing

Answer 8

phylum porifera

Question 9

this includes flatworms which is symmetrical

Answer 9

sponges

Question 10

any groups of animal

Answer 10

taxon

Question 11

arranged hierarchically

Answer 11

taxa

Question 12

naming of organims

Answer 12

nomenclature

Question 13

traditional approach and oldest of the 3

Answer 13

evolutionary systematics

Question 14

result from a common ancestry

Answer 14

homology

Question 15

similar evolutionary pressures

Answer 15

analogy

Question 16

uses mathematical models

Answer 16

numerical taxonomy

Question 17

called as cladistics

Answer 17

phylogenetic systematics

Question 18

construction showing relationship to other organims

Answer 18

cladogram

Question 19

describes how the parts of animals are arranged

Answer 19

symmetry

Question 20

absence of central point or axis

Answer 20

asymmetry

Question 21

any plane passing through the central oral-aboral axis

Answer 21

radial symmetry

Question 22

single plane passing

Answer 22

bilateral symmetry

Question 23

gives rise to epidermis

Answer 23

ectoderm

Question 24

gives rise to gastroderm

Answer 24

endoderm

Question 25

simplest metazoans

Answer 25

poriferans

Question 26

surround flagella with units arising from a cell

Answer 26

microvillar collars

Question 27

fresh water colonial protozoans

Answer 27

choanoflagellates

Question 28

oldest known animal fossils

Answer 28

fossil sponges

Question 29

attaches in the surface of the rocks

Answer 29

sessile

Question 30

brach to form colonies

Answer 30

solitary

Question 31

internal cavity

Answer 31

spongocoel

Question 32

outside openings or pores

Answer 32

ostia

Question 33

opening at the other end

Answer 33

oscules

Question 34

made of silicon dioxide, calcium carbonate

Answer 34

spicules

Question 35

made up of calcium carbonate with one to four points

Answer 35

calcareous

Question 36

silicon dioxide; 2 size megascleres and microsleres

Answer 36

siliceous

Question 37

collagen is stiffened by adding microscopic mineral

Answer 37

spicules

Question 38

these are sponges with calcareous

Answer 38

calcarea

Question 39

skeletons are made from spongin

Answer 39

class demospangiae

Question 40

canal systems

Answer 40

leuconoid

Question 41

spicules are made from silica

Answer 41

sclerospongiae

Question 42

skeletons composed of silicon dioxide

Answer 42

class hexatinellida

Question 43

poly and medusa they are found in pools

Answer 43

class hydrozoa

Question 44

solitarty; medusA

Answer 44

class scyphozoa

Question 45

solitary; polypstage

Answer 45

class cubozoa

Question 46

all polyps they are sea anemones and corals

Answer 46

class anthozoa

Question 47

they are called 'moon jelly'

Answer 47

aurelia aurita

Question 48

they have tissue organ level of organization

Answer 48

phylum platyhelminthes

Question 49

most common sea anemone on atlantic coast

Answer 49

metridium senile

Question 50

may regulate population dynamics

Answer 50

flatworms

Question 51

monogenetic flukes 5,000 worldwide present in marine, brackish and freshwater

Answer 51

class monogenea

Question 52

free living 3.000 free living species

Answer 52

class tubellaria

Question 53

digenetic fluke all are parasitic

Answer 53

class trematoda

Question 54

adult body covered with nonciliated syncytial tegument

Answer 54

class cestoda

Question 55

long and flat made up of segments

Answer 55

proglottids

Question 56

anterior end covered with hooks

Answer 56

scolex

Question 57

they have organ system of organization

Answer 57

phylum nematoda

Question 58

do not have well-developed exretory system but have digestuve system

Answer 58

nematide

Question 59

rich in collagen and carbohydrate protein polymer called chitin

Answer 59

cuticle

Question 60

mostly in aquatic environment

Answer 60

algivores

Question 61

plant parasitic

Answer 61

herbivores

Question 62

sometimes free living nematoda

Answer 62

bacteriovores

Question 63

feeds on fungi

Answer 63

fungivores

Question 64

primary source of food are small animals

Answer 64

predators

Question 65

feed on several type of food

Answer 65

omnivores

Question 66

inhibit animal hosts

Answer 66

animal parasites

Question 67

they feed using radula they can be monoecious or dioecious

Answer 67

mollusc

Question 68

without plate thoros around 320 species lacks in shell and crawl

Answer 68

class aplacophora

Question 69

single plate phoros undivided arched shell

Answer 69

class monoplacophora

Question 70

polys plate chitons belong to the class unsegmented

Answer 70

class polyplacophora

Question 71

skaphe podos tooth shells

Answer 71

class scaphophoda

Question 72

largest and most varied molluscan class

Answer 72

class gastropoda

Question 73

one of the most significant modification of gastropods

Answer 73

torsion

Question 74

most modern gastropods

Answer 74

shell coiling

Question 75

filter feeders

Answer 75

class bivalvia

Question 76

active marine predators

Answer 76

class cephalopoda

Question 77

they have organ system level of organization

Answer 77

phylum annelida

Question 78

segmented inside and out

Answer 78

class polychaeta

Question 79

body segmented inside and out

Answer 79

class oligochaeta

Question 80

segmented 33 or 34 in numberss

Answer 80

class hirudina

Question 81

also called as sandworms or ragworms

Answer 81

class polychaeta

Question 82

prefer moist and rich soil

Answer 82

class oligochaeta

Question 83

predaceuos and mostly fluid feeders

Answer 83

class hirudinea