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Kingdom Animalia > 1. > Flashcards

1. Flashcards

1
Q

Name the 5 phyla from least complex to most complex:

A
  1. Phylum Cnidaria
  2. Phylum Platyhelminthes
  3. Phylum Annelida
  4. Phylum Arthropoda
  5. Phylum Chordata
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2
Q

Name examples of Cnidaria.

A

Jellyfish and hydra

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3
Q

What type of symmetry do Cnidaria have?

A

Radial symmetry

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4
Q

Are Cnidaria diploblasts or triploblasts?
What do these terms mean?

A

Cnidaria are diploblasts
Diploblasts - organisms possess two layers, the endoderm and the ectoderm
Triploblasts - organisms possess three layers, endoderm, ectoderm and mesoderm.

(Endoderm = innermost layer, mesoderm = middle layer, ectoderm = outermost layer)

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5
Q

Do Cnidaria have an anus or coelom?

A

No, they don’t have an anus or coelom.

Coelom = body cavity filled with fluid where organs are suspended.

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6
Q

What type of skeleton do Cnidaria have?
Do Cnidaria have segmentation?

A

Hydroskeleton
No segmentation

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7
Q

Name examples of Platyhelminthes.

A

Flatworms, planarian & liver fluke.

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8
Q

Are Platyhelminthes multicellular or unicellular?

A

Multicellular

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9
Q

What kind of symmetry do Platyhelminthes show?

A

Bilateral symmetry

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10
Q

Platyhelminthes are flattened…

A

Dorso -ventrally

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11
Q

Are Platyhelminthes diploblasts or triploblasts?

A

Triploblasts

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12
Q

Do Platyhelminthes have an anus or a coelom?

A

No anus
Acoelomate = no coelom

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13
Q

What type of skeleton do Platyhelminthes have?

A

Hydroskeleton

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14
Q

Do Platyhelminthes have segmentation?

A

No segmentation

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15
Q

Describe Platyhelminthes organ systems.

A

Well-differentiated organ systems

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16
Q

Name examples of Annelids.

A

Earthworms and lugworms

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17
Q

Are annelids diploblasts or triploblasts?

A

Triploblasts

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18
Q

What symmetry do Annelids show?

A

Bilateral symmetry

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19
Q

Are annelids coelomate?

A

Yes (they have a coelom)

20
Q

Annelids have a _____ - _____ gut

A

One-way gut (mouth and anus)

21
Q

Annelids have segmentation. Describe this.

A

Each segment has its own muscle, blood vessel and nerve supplies. Some have reproductive organs.

22
Q

What type of skeleton do Annelids have?

A

Hydroskeleton

23
Q

Name examples of Arthropoda.

A

Insects and spiders

24
Q

What type of skeleton do Arthropoda have?

A

Exoskeleton

25
Q

Are Arthropoda diploblasts or triploblasts? What type of symmetry do they have?

A

Triploblasts
Bilateral symmetry

26
Q

Describe the segmentation in Arthropoda.

A
  • Fixed number of metameric segments
  • Greater degree of specialisation than Annalids.
27
Q

What is a notable fact about Arthropoda?

A

They are the most successful Phylum.

28
Q

Arthropoda are haemocoel. What does this mean?

A

They have a reduced coelom.

29
Q

Arthropoda have a brain. What is the term that describes the presence of a brain?

A

Cephalisation

30
Q

What else do Arthropoda have apart from a brain?

A

Ventral nerve cord
Complete digestive system

31
Q

Name examples of Chordata.

A

Mammals and birds.

32
Q

What type of symmetry do Chordata show?

A

Bilateral symmetry

33
Q

Describe the coelom of Chordata.

A

Well-developed

34
Q

Describe the segmentation of Chordata?

A

Head, thorax and abdomen in humans.

35
Q

Do Chordata show cephalisation?

A

Yes - they have a brain

36
Q

Describe the nervous system of Chordata.

A

Complex

37
Q

In Chordata, segmented muscles are in __ _______ _____

A

An unsegmented trunk

38
Q

What type of circulatory system do Chordata have?

A

Closed circulatory system.

39
Q

Are Chordata coelomate?

A

Yes

40
Q

Chordata have a completed digestive system with the highest degree of specialisation. What else do they have?

A

Calcified bones
Jointed limbs
Highly differentiated tissues.

41
Q

For Annelids, gas exchange occurs along…..

A

The length of its body.

42
Q

Describe an insect.

A

3 pairs of jointed legs
2 pairs of wings
Head, thorax and abdomen

43
Q

Describe a spider

A

Head and abdomen
4 pairs of jointed legs.

44
Q

Define radial symmetry

A

Body parts radiate out from a central point.

45
Q

Define bilateral symmetry

A

Right and left sides of the body are mirror images of each other.

Kingdom Animalia (1 decks)

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