Chapter 26 Flashcards

0
Q

Hollow ball of cells that fold in on oneself

A

Blastula

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1
Q

Tissues that are unique to animals

A

Nervous and muscle

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2
Q

Early development in animals

A

Zygote -> blastula -> blastopore -> deuterostome or protostome

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3
Q

Mouth forms form blastopore

A

Protostome

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4
Q

Anus forms from blastopore

A

Deuterostome

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5
Q

What does the endoderm become

A

Digestive track

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6
Q

What does the ectoderm become?

A

Sensory organs, nerves, and skin

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7
Q

What does the mesoderm become?

A

Muscles, circulatory, and excretory systems

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8
Q

Only animal without symmetry

A

Sponges

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9
Q

Animal example of radial symmetry

A

Sea anemone

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10
Q

Anterior

A

Front

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11
Q

Posterior

A

Back

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12
Q

Dorsal

A

Top

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13
Q

Ventral

A

Bottom

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14
Q

Concentration of sense organs and nerve cells at the front of the body

A

Cephalization

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15
Q

A fluid filled space that lies between the digestive tract and the body wall

A

Body cavity

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16
Q

What does the body cavity protect?

A

Organs

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17
Q

Sponge phylum

A

Porifera

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18
Q

Meaning of the word Porifera

A

Pore bearers (gas exchange)

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19
Q

Sessile (definition)

A

Stationary

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20
Q

Sponge symmetry

A

Asymmetrical

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21
Q

Used to circulate water along with flagella (specialized cell) (sponges)

A

Chanocytes

22
Q

Opening at the top of the sponge

A

Osculum

23
Q

Spike shaped structure made of calcium carbonate (sponges)

A

Spicule

24
Q

Forms spicule (sponges)

A

Archaeocytes

25
Q

Use of archaeocytes (sponges)

A

Intracellularly digest food

26
Q

Respiration, circulation, and excretion in sponges

A

Diffusion

27
Q

Response in sponges

A

Toxins

28
Q

Gender of sponges

A

Hermaphrodites

29
Q

Groups of archaeocytes surrounded by a layer of spicules (asexual reproduction)

A

Gemmules

30
Q

Why are cnidarians called “true animals”?

A

They have tissues and symmetry

31
Q

Specialized cells that move around within the cells (Porifera)

A

Archaeocytes

32
Q

Soft body carnivore with stinging cells on tentacles

A

Cnidarian

33
Q

Stinging filled cells on tentacles

A

Cnidocytes

34
Q

Poison filled stinging structure with a tightly coiled dart

A

Nematocysts

35
Q

Symmetry of cnidarians

A

Radial symmetry (central mouth surrounded by tentacles)

36
Q

Life cycle stages of cnidarians

A

Polyp -> Medusa

37
Q

Important structure found on cnidarians

A

Gastrovascular cavity

38
Q

3 types of tissue in the gastrovascular cavity

A
  1. Gastroderm
  2. Epidermis
  3. Mesoglea
39
Q

Outer layer (cnidarians)

A

Epidermis

40
Q

Inner lining (cnidarians)

A

Gastroderm

41
Q

Middle layer (cnidarians)

A

Mesoderm

42
Q

2 feeding structures in cnidarians

A

Tentacles and gastrovascular cavity

43
Q

Respiration, Circulation, and Excretion in Cnidarians

A

Diffusion

44
Q

Digestive chamber with one opening

A

Gastrovascular cavity

45
Q

Loosely organized network of cells that are going to detect stimuli around them (cnidarians)

A

Nerve net

46
Q

Groups of sensory cells that are used to detect direction of gravity

A

Statocysts

47
Q

Eyespots used to detect light (Cnidarian)

A

Ocelli

48
Q

Layer of circular muscles and a layer of longitudinal muscles along with the gastrovascular cavity allows for jet propulsion

A

Hydrostatic skeleton

49
Q

Asexual reproduction in Cnidarians

A

Budding- polyps

50
Q

Sexual reproduction process of Cnidarians

A

Sperm released into water -> fertilized egg develops into larva -> larva develops into a polyp -> polyps bud to form medusas which release gametes

51
Q

Jellyfish class

A

Scyphozoa

52
Q

Portuguese man of war class

A

Hydrozoa

53
Q

Sea anemone and coral class

A

Anthozoa