CNIDARIA AND CTENOPHORA

Question 1

Cnidarians exist as

Answer 1

Solitary or medusoid

Question 2

Medusoid means

Answer 2

Free floating individual

Question 3

Ceoli and statocyst are the… Of cnidarians

Answer 3

Sensory cells

Question 4

Gomozoid are responsible for ……. Through …..

Answer 4

Asexual reproduction, budding

Question 5

Datinozoids are

Answer 5

Defensive

Question 6

In obelia, there can be …… Types of zoid

Answer 6

3

Question 7

Anthozoa exist in…..

Answer 7

Colonies

Question 8

In polypoids, mouth faces

Answer 8

Upwards

Question 9

Classes ofcnidaria are

Answer 9

Hydrozoa, anthozoa, scyphozoa and cubozoa

Question 10

……. Is an example of hydrozoa

Answer 10

Hydra

Question 11

In medusoid form of hydrozoa, the mouth is always at the end of a very long

Answer 11

Manubrium

Question 12

Physalia has …. which could be deadly

Answer 12

Stinging cells

Question 13

Cubozoa are …… And called.. …

Answer 13

Box-like , boxjelly

Question 14

Cubozoa are…….

Answer 14

Strong swimmers

Question 15

Anthozoa includes

Answer 15

Sea anemones and corals

Question 16

Cnidarians are……. symmetrical

Answer 16

Radially

Question 17

The ……… and ……. are separated by mesogloea

Answer 17

Epidermis and gastrodermis

Question 18

There is only mouth and no……

Answer 18

Anus

Question 19

There are no special structures for…..

Answer 19

Excretion, respiration and transport

Question 20

There is a simple nervous system consisting of nerve cells which form…..

Answer 20

Nerve net

Question 21

There is a stinging adhesive structure called ……. found in the……

Answer 21

Cnidae, cnidocyte

Question 22

The most common cnidae are…..

Answer 22

Nematocyst

Question 23

Jelly fish possess

Answer 23

Sea water channels

Question 24

Cnidarians exist in various forms known as …..

Answer 24

Polymorphism

Question 25

Polyps are. .....

Answer 25

Sessile

Question 26

What is a mesentery?

Answer 26

a support or partition in an invertebrate like the vertebrate mesentery

Question 27

.......... are the gamete-producing cells in hydrozoa

Answer 27

Hydromedusae

Question 28

The ......... in hydrozoa is accelular

Answer 28

Mesogloea

Question 29

The cnidocytes in hydrozoa are only found in the. ....

Answer 29

Epidermis

Question 30

Gametes are......

Answer 30

Ectodermal

Question 31

What is manubrium

Answer 31

the process that bears the mouth of a hydrozoan 

Question 32

Another name for manubrium is......

Answer 32

Hypostome

Question 33

Examples of hydrozoa are

Answer 33

Hydra, craspedote, hydromedusa

Question 34

Orders in the class hydrozoa include:

Answer 34

Hydroida, chrondrophora, siphonophora, actinulida, trachylina

Question 35

The most dominant form in scyphozoa is.....

Answer 35

Medusa

Question 36

Unlike hydromedusa, scyphozoa lack ......

Answer 36

Velum acrapspedote

Question 37

Cnidocytes of scyphozoa occur in.......

Answer 37

Gastrodermis and epidermis

Question 38

Gametes in scyphozoa are......

Answer 38

Gastrodermal

Question 39

Mesogloea in scyphozoa contain amoeboid....... cells

Answer 39

Mesenchyme

Question 40

Mesogloea in scyphozoa contain amoeboid....... cells

Answer 40

Mesenchyme

Question 41

An example of scyphozoa is

Answer 41

Jellyfish

Question 42

The medusa is fringed by short ........ and divided by ........

Answer 42

Tentacles, notches

Question 43

The term enteron in hydrozoa means. .....

Answer 43

The digestive tract especially of embryo

Question 44

In cubozoa, the medulla is .......... with tentacles hanging down from each side

Answer 44

Square-shaped

Question 45

..,....... are strong swimmers and voracious predators of fish

Answer 45

Cubozoa

Question 46

Examples of anthozoa are

Answer 46

Sea anemone and coral

Question 47

In anthozoa, the ......... with limited movements dokinates

Answer 47

Polyp

Question 48

The gastrovascular cavity of anthozoa is divided into 3 by

Answer 48

Complete and incomplete mesentery

Question 49

The oral end is expanded into an oral discsurrojnded by

Answer 49

Tentacles

Question 50

Mesenteries in anthozoa bear

Answer 50

Cnidocytes and gonads

Question 51

The mouth of anthozoa leads into a.....

Answer 51

Pharynx

Question 52

The mesenchyme of ..... And...... contain amoeboid cells

Answer 52

Hydrozoa and anthozoa

Question 53

In anthozoa, sexual reproduction is by

Answer 53

Longitudinal fission

Question 54

The largest animals that move by means of cilia are

Answer 54

Comb jellies

Question 55

Phylum ctenophora include animals such as

Answer 55

Comb jelly, sea goose, sea berry, sea walnut

Question 56

There are 8 ...... bands of cilia between the ...... and...... parts in Comb jelly

Answer 56

Meridonal, oral and aboral

Question 57

The mesenchyme of ctenophora are made of ....... which form. .....

Answer 57

Gelatinous cells, musculature

Question 58

Comb jelly has....... symmetry, it is.......and.....

Answer 58

Biradial, transparent and fragile

Question 59

Comb jelly glows in the dark and has no body cavity, this means it is a

Answer 59

Luminescent acoelomate

Question 60

Comb jelly is...... with no ...... Life stage

Answer 60

Monomorphic, no sessile life stage

Question 61

An example of comb jelly is

Answer 61

Mnemiopsis

Question 62

Ctenophorans are mostly.... with a...... Larva stage

Answer 62

Hermaphroditic, cydippid

Question 63

They have complete gut. This means

Answer 63

The gut leads into the pharynx and branched gastrovascular canals

Question 64

There are .... types of anus in ctenophorans

Answer 64

2, aboral pore and anal

Question 65

........ releases sticky threaf to capture prey that comes in contact with the organism

Answer 65

Colloblast

Question 66

In ctenophora, there are no ...... But the tentacles have adhesive glue cells called.....

Answer 66

Nematocyst, colloblast

Question 67

Both cnidarians and ctenophorans have...... symmetry, are......., have.........as simple nervous system, have feeding ..........

Answer 67

Radial, acoelomate, nerve net, tentacles

Question 68

Ctenophorans are never ........

Answer 68

Colonial

Question 69

Ctenophorans are........ Throughout their life history

Answer 69

Monomorphic

Question 70

Ctenophorans do not have.......

Answer 70

Nemtocysts/ stinging cells