Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Animal Biodiversity > PHYLUM CNIDARIA > Flashcards

PHYLUM CNIDARIA Flashcards

1
Q

_____ are an ancient phylum of _____ “true animals”

A

Cnidarians
Eumetazoans

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cnidaria with the greek word ____ which means nettle and ____ like/connected with

A

knide
aria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

List of cnidarians (5)

A

Sea jellies

Coral colonies

Sea anemones

Sea pens

Sea fans

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Cnidarian characteristics:

Body type: _____

Body organization_____ (germ layers): _____

Jelly like layer that is not a tissue layer but in between _____

A

Radial symmetry

Diploblastic

Endoderm
Ectoderm

Mesoglea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Basic body plan:

The basic body plan of a cnidarian is a sac with a central digestive compartment, the _____

A

gastrovascular cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Cnidarian characteristics:

Digestion begins in the _____ and is completed inside ____ in the ____ cells

A

Gastrovascular cavity

food vacuoles
gastrodermal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Cnidarian characteristics:

Body cavity: _____

Digestive system:
_____

A

Body cavity:
Acoelom

Digestive system:
mouth
Gastrovascular cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Basic body plans:
______ are cylindrical forms that adhere to the ___ end of their body (opposite to the mouth)
Example: ____ and ____

______ resembles a flattened, mouth-down version of the prior. It moves freely in the water through passive drifting and contractions.

A

Polyps
Aboral end
Examples: Hydras and Sea anemones

Medusa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Types of reproduction for cnidarians: (3)

A

Sexual
Asexual (Budding & Regeneration)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The life Cycle of the hydrozoan _____
(Turns from polyp to hydra) (6)

A

Obelia

Asexual reproduction (Budding)
Reproductive polyp
Sexual Reproduction
Sperm
Planula (larva)
Developing polyp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Cnidarian characteristics:

Cnidarians have no organs or organ systems (gas/waste exchange is done by ______)

Cnidarians have a rudimentary nervous system (decentralized) called a ____ that encircles its body to coordinate nerves & muscles

A

diffusion

Nerve net

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cnidarians are carnivores:

______ defense against predators & capture of preys. Also has a stinging capsule called ____, triggered by touch or certain chemicals

______ called nematocytes are stinging capsules

A

Cnidocytes
Nematocyst

Cnidae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Movement and coordination:

Contractile tissues and nerves occur in the simplest forms in cnidarians. Cells of the _____ (outer layer) and ____(inner layer) have bundles of _____ arranged into contractile fibers

The gastrovascular cavity acts as a ____ against which the contractile cells can work.

A

Epidermis (outer layer)
Gastrodermis (inner layer)

hydrostatic skeleton

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Movement and coordination:

Movements are coordinated by a _____.

Cnidarians have no brain, however this allows the animal to detect and respond to stimuli from all directions.

A

Nerve net

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Cnidaria consist of over 10, 000 species:

Cnidaria (4)

A

Cubozoa

Scyphozoa

Anthozoa

Hydrozoa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Cnidaria consist of over 10, 000 species:

Cubozoa (1)

Scyphozoa (2)

Anthozoa (2)

Hydrozoa (2)

A

Cubozoa:
Box jelly

Scyphozoa:
Moon Jelly
Purple Jelly

Anthozoa:
Anemone
Coral

Hydrozoa:
Hydra
Portuguese man of war

17
Q

The Four important cnidarian classes:

Class ____
-Polyps with a flowerlike appearance
-No medusa stage
-All marine

Examples (4):

A

Class Anthozoa

Sea anemones
Corals
Sea fans
Sea whips

18
Q

The Four important cnidarian classes:

Class _____
-Dominant stage is the medusa
-Polyp is absent or reduced
-Cup-shaped umbrellas
-Includes true jellyfish

The largest of the species is: _____ which is 2m

Other jellyfish species:_____

A

Class Scyphozoa

Cyanea capillata

Aurelia labiata

19
Q

c
-mostly marine
-alteration of generations (polyp and medusa)
- Most form colonies

All other cnidaraian have gonads derived from ____, while this class have gonads derived from _____

Examples: ____, ____, and _____

A

Class Hydrozoa

Gastrodermal tissue
Epidermal tissue

Hydroids, Fire corals, Portugese man-of-war

20
Q

Hydrozoan | Hydra:

Faovrable conditions:

Harsh conditions:

Portuguese Man O’ War _____
By-the-wind Sailor _____

A

Favorable: asexually by budding

Harsh: sexually forming resistant zygote

Physalia
Velella

21
Q

The Four important cnidarian classes:

Class ____
- Have a box-shaped medusa and well-developed eyes, allowing them to detect light and navigate their environment

Examples (1)

A

Class Cubozoans

Box Jellyfish

22
Q

Cubozoa | Box Jellyfish

Scientific name: ____
Species can achieve sizes of 15-25 cm

Cubozoans have muscu;ar pads called ____ at the corners of the square bell canopy, with one or more tentacles attached

They exist in a ____ form that develops from larva

A

Chironex fleckeri

Pedalia

Polyps

23
Q

Cubozoa:
Australian box jellyfish ____

Pale Atlantic box jellyfish ____

A

Chironex fleckeri

Carybdea alata

24
Q

What produces poison more potent than cobra venom?

A

Sea wasp

Animal Biodiversity (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions