Brainscape's Knowledge GenomeTM

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


See full index

Animals > Study Cards For Lab #3 Quiz > Flashcards

Study Cards For Lab #3 Quiz Flashcards

1
Q

3 Classes of Phylum Porifera

A

Calcerea, Hexactinellida, Demospongiae

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

3 Forms Phylum Porifera

A

Asconoid, Syconoid, Leuconoid

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

Phylum Porifera Cell Types

A

Unique Feature: spicules

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

Phylum Porifera Symmetry

A

None or Radial

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

Phylum Porifera: Class Calcarea

A

Calcareous carbonate spicules

All three grades of structure are found in this class - asconoid, syconoid, leuconoid

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

Phylum Porifera: Class Calcarea: Asconoid Forms

A

Have a simple circular opening - the osculum, the exhaling current passes through this
Stage at which the more complex syconoid and leuconoid sponges pass during their development

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

Phylum Porifera: Class Calcarea: Syconoid Forms (Grantia)

A

Widespread throughout the holarctic
Common solitary form occurring in shallow, coastal water to a depth of about 200m
Reproduces asexually (budding from the base), or sexually

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

Look at picture of sponge morphology

A

page 34 in lab manual

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

Phylum Porifera: Class Hexactinellida - the glass sponges

A

The spicules of these sponges are siliceous and six-pointed or hexagon
In many the spicules are fused to form a glass like skeleton
Most species occur in deep or abyssal waters - rare specimens in invertebrate collections

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

Phylum Porifera: Class Hexactinellida - Example

A

Euplectella aspergillum - venus’s flower basket

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

Phylum Porifera: Class Demospngiae

A

Contains the largest number of parazoan species - includes marine sponges as well as a few fresh water forms
Skeleton may contain siliceous spicules and or spongin fibres
If siliceous spicules are present they are often monsoon and never hexagon
All species are leuconoid and irregular in shape

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

Phylum Porifera: Class Demospngiae : Family Spongillide

A

The only fresh water sponges
Found in lakes and streams - grows around twigs and stems of plants and covering rocks
Shape of sponge is variable depending on age, shape of substrate and water currents
Substrates growing in bright sunlight are greenish due to symbiotic, intracellular zoochlorellae

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

Preserved Specimens (Spongilla)

A

Sponge has a solid material

Usually several oscula

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

Prepared slides of gemmules (Spongilla)

A

Fresh water sponges are able to reproduce sexually - free motile larvae
Asexual reproduction can occur as well - gemmules are produced
Gemmules - spherical, tough dark brown covering, remain in the tissue of the dying sponge. Each contains a central mass of archaeocytes surrounded by spongin and spicules

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

Euspongia

A

Live in warm sub tropic seas - depths of 300m
Found in West Indian Islands, Australia, Indian Ocean
Large in size - harvested for commercial use
Reproduce sexually

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

Preserved dried specimens (Euspongia)

A

Difference in complexity between asconoid and complex leuconoid involves water canals and skeletal systems alone with infolding and branching of collar cell layer
Leuconoid is principal body plan for sponges - permits larger size and more efficient water circulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Preserved specimens (Clione)

A

Often encrust the shells of marine bivalve molluscs

Play a role in the recycling of calcium carbonate in the marine environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q 
Prepared Slides (Spicules various species)
refer to figure 2.4 on page 37
A

Spicules are siliceous (SiO2) or calcareous (CaCO3) elements whose composition, size, and shape are used to classify them
Spicules are separated into large megascleres and small microscleres
Megascleres - principal body framework
Microscleres - support the pinacodermal lining of the canal system (in high density toughen the body wall)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Cnidarians

A

Metazoans with radial symmetry and tentacles surrounding the mouth
Primarily marine and carnivorous
Body wall - 2 cell layers - outer epidermis and gastrodermis
Two morphological types - sessile polyps and motile medusa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Characteristic of the Siphonophora

A

Polymorphism

21
Q

Siphonophora

A

Large pelagic colonies which are composed of both polypoid

22
Q

In what climate are physalia common?

A

-warm and tropical seas

23
Q

What body form does a Physalia have?

A

modified medusoid morph

24
Q

where may gonophores of the physalia be found?

A

-on the reproductive polyp

25
Q

the true jelly fish

A

scyphozoans

26
Q

what is the dominant morph of a scyphozoans

A

medusa

27
Q

properties of a scyphozoan

A
  • large, jelly like mesoglea
  • lack velum
  • gonads that lie in the gastrodermis
28
Q

where are Aurelia found?

A
  • shallow, coastal waters

- in swarms

29
Q

Page 44 image

A

Life cycle

30
Q

suspension feeder

A

-aurelia

31
Q

how do Aurelia obtain food?

A
  • actively swim to surface, trap food in subumbrellar surface
  • passively sinks to bottom with food
32
Q

describe the digestion system of an Aurelia

A
  • being extracellularly in gastrovascular cavity
  • completed intracellularly in gastrodermal cells
  • mouth opens to central cavity- leads to four gastric pouches
33
Q

the planula

A

-an oval, solid, cellular mass whose surface cells are ciliated

34
Q

What stage is Aurelia scyphistoma in?

A

-polypoid stage

35
Q

what season does an Aurelia scyphistoma feed and grow?

A
  • fall and winter; buds off of other schyphistomae
36
Q

what is the body shape of a schyphistomae?

A

-trumpet-shaped and attached by an adhesive disc

37
Q

the process of strobilation

A

-scyphistoma asexually reproduce young medusa

38
Q

Aurelia ephyrae

A

-young medusoid stage of Aurelia

39
Q

anthozoans

A
  • solitary or colonial. Marine polypoids

- medusoid phase is entirely lacking

40
Q

actiniaria

A
  • sea anemones

- without a skeleton and have 2 siphonoglyphs

41
Q

metridium

A
  • usually stationary

- food is trapped in its tentacles

42
Q

Cnidarians: class hydrozoa - the hydrozoans

A

Solitary or colonial forms
asexal hydrid or polyploid phase with sexual medusoid phase
the mesoglea is never cellular and the gastrodermis lacks nematocysts

43
Q

What do hydrozoan polyploid forms lack

A

stomodaeum and mesenteries (present in class Anthozoa)

44
Q

hydrozoan medusa

A

has a velum and epidermal glans - in contrast with the class scyphozoa

45
Q

Cnidarians

A

have evolved polymorphism

46
Q

Cnidarians: order Hydroida

A

well developed polyploid phase

medusa phase is usually present - may be absent tho

47
Q

Gonionemus: Medusa form

A

solitary, small polyploid phase - gives rise to the free swimming medusoid phase
Abundant along east coast of North America
Feed by swimming to surface then sinking with tenticles spread out
polyps reproduce by budding

48
Q

Hydra

A

unlike hydrozoa - hydra is a fresh water animal
medusoid phase has been eliminated
polyploid phase is solitary
usually asexual reproduction by budding (can form testes and ovaries in adverse conditions)

49
Q

Obelia

A

lives in shallow coastal waters to a depth of about 140m
the hydroid colonies attach to shells, sea weed, rocks, and piers
feeds on small crustaceans and other planktonic organisms

Animals (3 decks)

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