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Zly 103 > Chapter 4 > Flashcards

Chapter 4 Flashcards

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1
Q

What is the level of organization of phylum Cnidaria

A

Tissue

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2
Q

Does cnidarians have gastrovascular cavity

T /. F

A

T

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3
Q

Cnidae that sting are known as?

A

Nematocysts

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4
Q

What is the division of body later if hydra

A

Diploblastic

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5
Q

Cells for prey capture and defense in hydra is known as

A

Cnidocytes

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6
Q

State where extracellular digestion and intracellular digestion occur in Cnidaria

A

Extracellular digestion occur in– the gastrovascular cavity

Intracellular digestion occur in – the gastrodermal cells

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7
Q

Name the sensory organs in cnidarians

A

Statocysts for balance
Occeli for photosensitivity

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8
Q

What is polymorphism

A

Diversity of body type

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9
Q

How many class are cnidarians classified into namely

A

4

Hydrozoa, scyphozoa, Anthozoa,Cubozoa

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10
Q

The two polymorphic stage of cnidarians are

A

Polyp and
Medusa

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11
Q

The simplest hydrozoa is

A

Hydra

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12
Q

Where is the mouth located in hydra

A

Hypostome

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13
Q

The feeding part of the colonies in Cnidaria is known as

A

Hydranth

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14
Q

The reproductive colony are known as

A

Blastostyles

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15
Q

Where does intracellular digestion occur in hydra

A

Gastrodermal cells

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16
Q

Obelia gengiculata is known as

A

Sea fur

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17
Q

Does alternation of generations occur in hydrozoans

T /F

A

T

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18
Q

Hydranth are also know as

A

Feeding part of the colonies

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19
Q

Reproductive polyp in obelia is known as

A

Gonangium

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20
Q

Obelia is diecious

T/F

A

T

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21
Q

Aurelia aurita is known as

A

Jelly fish

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22
Q

The predominant stage in scyphozoa is

A

Medusa

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23
Q

Sensory organs in scyphozoa is known as

A

Rhopalium

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24
Q

Rhopalium consist of

A

Statocysts,two oocelli,two olfactory pits

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25
The rhopalium is found between the
Lappets or notch bearing
26
Which class of cnidaria are the gonands located next to the gastric pouches
Scyphozoa
27
Specifically in which organism does strobilization occur
Scyphozoa Jelly fish
28
Which class of cnidaria is flower shaped
Anthozoa
29
Which class of cnidaria is umbrella shaped
Scyphozoa
30
Which class of cnidaria is hollow/cylindrical shaped
Hydrozoa
31
The base of tentacles of Anthozoa are differentiated into tough flattened blades called
Pedalium
32
What is the function of velarium
Swimming efficiency
33
Which part account for biradial symmetry in Anthozoa
Syphonoglyphs
34
How many part is the gastrovascular cavity of Anthozoa divided by
By septa or mesenteries
35
Metridium marginatum is known as
Sea anemone
36
Chironex fleckeri is known as
Sea wasp
37
Which class of cnidaria has its cnidocytes in the gastrovascular cavity?
Anthozoa
38
Budding is also known as pedal laceration?T/F
T
39
Which class of cnidaria has complex eyes
Cubozoa
40
Predominant stage in Anthozoa is known as
Polyp
41
The most venomous cnidaria is class
Cubozoa
42
Pedalium is common to class
Anthozoa
43
Diecious cnidaria class are?
Anthozoa, scyphozoa and some Hydrozoa
44
Both cnidaria and ctenophora belong to the phylum?
Radiata
45
The non gelatinous layer in the body wall of Cnidaria is called
Mesoglea
46
Sexual stage is known as
Medusa
47
Asexual stage is known as
Polyp
48
Stinging apparatus in Cnidaria is known as
Nematocysts
49
A class of cnidaria that forms go and from the epidermis is
Hydrozoa(hydra)
50
What helps to convey water into the enteron of sea anemone
Syphonoglyphs
51
Body cavity of hydra is called
Enteron
52
Digestion in Cnidaria is
Both intracellular and extracellular
53
How many principal type of cells makes up the ectoderm of hydra
6
54
Statocyst is a sense organ present in which stage
Medusa stage
55
What are totipotent cells
They are cells that help in regeneration
56
The process of asexual reproduction in sea anemone is known as
Pedal laceration
57
Morphism of Obelia is
Trimorphic(polyp, Medusa and colonial stage)
58
The stolon of Obelia is known as
Hydrorhiza
59
The number of rhopalia found in Aurelia is
8
60
The first invertebrates to develop a true nervous system is
Colenterates
61
How many septa is found in obelia
Six 6
62
How many septa is found in Aurelia
Six pairs
63
Alternation of generations is termed
Metagenesis
64
Single mouthed sac like digestive cavity in Cnidaria is called
Enteron

Zly 103 (6 decks)

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