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Zoology > Animal architecture/porifera/cnidocides > Flashcards

Animal architecture/porifera/cnidocides Flashcards

0
Q

Metazoans

A

Multi cellular heterotrohs

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1
Q

Multicellular Heterotrohes

A

an organism deriving its nutritional requirements from complex organic substances.

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2
Q

Collagen

A

Three stranded protein unique to animals

Ropelike fibers strong and flexible, movement still possibly

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3
Q

Diploid/sexual reproduction

A

Diploid- 2 sets of chromosomes
Diploid parents create diploid offspring
No free living haploid

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4
Q

Homeobox (HOX) genes

A

Determine position of cells differeny
Control early development
Specific sequence of 180 nucleotides called homeobox

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5
Q

Radial symmetry

A

Several planes

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6
Q

Bilateral symmetry

A

One plane

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7
Q

Frontal

A

Divides into dorsal & ventral halves —

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8
Q

Sagital

A

Divides into right & left halves |

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9
Q

Transverse

A

Separates anterior & prosterior portions

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10
Q

Cephalization

A

Differentiating of the head(nervous) end & back end

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11
Q

Radial cleavage

A

Parallel or perpendicular to vertical axis (uniform)

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12
Q

Spiral cleavage

A

Diagonal to vertical line (ball)

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13
Q

Endoderm

A

Lining of digestive tract; organs

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14
Q

Mesoderm

A

Muscles, organisms

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15
Q

Ectoderm

A

Surface cover

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16
Q

Blastopore

A

the opening of the archenteron to the exterior of the embryo at the gastrula stage.

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17
Q

BlastulA

A

is a hollow sphere of cells, referred to as blastomeres, surrounding an inner fluid-filled cavity called the blastocoele formed during an early stage of embryonic development in animals.

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18
Q

Blastocoel

A

the fluid-filled central region of a blastula

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19
Q

Gastrulation

A

Forming of the gut tube (and three germ layers)

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20
Q

Gastrocoel

A

: the cavity of the gastrula of an embryo forming a primitive gut

21
Q

Ceolom

A

Fluid filled body cavity between outer body wall & the gut, forms inside mesoderm

Cushions organs
Allows flexibility
Serves as hydrostatic skeleton
Allows organs to grow & move independently

22
Q

Protosome

A

Mouth&raquo_space; anus

23
Q

Deuterosome

A

Anus&raquo_space; mouth

24
Q

Benefits of a larger size

A
  • harder to be hunted
  • helps maintain body temp
  • more efficient use of energy
  • reduced cost lf locomotion
  • improved homeostasis
25
Q

Sessile

A

Immobile and attached at the base

26
Q

Sexual & Asexual reproduction PORIFERA

A
  • gamete party
  • BOTH MALE AND FEMALE SEX CELLS. MONOECIOUS
  • break off a piece of themselves & drift away in bad conditions
27
Q

Spicules

A

Silica based crystals which set as a skeleton for the sponge, preventing collapse

28
Q

Spongin

A

A fibrous protein that is the main constituent of the skeleton in certain sponges.

29
Q

Pinacocytes

A

Cover interior & exterior surfaces

30
Q

Choanocytes

A

Pull water through sponge, create current

31
Q

Porocytes

A

tubular cells which water flows through

32
Q

Amoebocytes

A

Mobile cells that deliver nutrients throughout the body of the sponge

33
Q

Archaeocytes

A

Move about in the mesohyl performing various functions

34
Q

Spongoceol

A

Large, central cavity of sponges

35
Q

Osculum

A

a large aperture in a sponge through which water is expelled.

36
Q

How do sponges get oxygen?

A

Diffusion

37
Q

How do sponges filter feed?

A

Water is pulled through the choanocytes and food particles are trapped as waste and water moves out of the osculum. Amebeocytes gather nutrients & deliver throughout

38
Q

Adaptive Radiation due to filter feeding

A

Centered on elaboration lf the water circulagion and filter-feeding system

39
Q

Motile

A

Capable of motion

40
Q

Reproduction in CNIDARIA

A

Polyp - budding, gamete party, monoecious

Medusa- dioecious

41
Q

Diploblastic

A

Two tissue layers

42
Q

Mesoglea

A

the translucent, non-living, jelly-like substance found between the two epithelial cell layers in the bodies of coelenterates and sponges.

43
Q

Cnidocytes

A

Contains nematosis (capsule) that contains harpoon w/ barb; venom

44
Q

Hemotoxin (in jellies)

A

Destroy red blood cells

45
Q

Neurotoxin

A

poisonous or destructive to nerve tissue

46
Q

Class Hydrozoa

A

Marine & colonial in form, typical, life cycle includes asexual polyp & sexual medusa ( bell medusa )

47
Q

Class Scyphozoa

A

Larger jellyfish, “cup” animals

48
Q

Class cubozoa

A

Medusa is prominent form (box jellies)

49
Q

Class Arthrizoa

A

“Flower animals”
Polyps with flowerlike appearance
Anenomeones

50
Q

Dioecious

A

2 diff genders

51
Q

U gut in cnidaria

A

Food goes in thru mouth, nutrients gathered, out mouth

Zoology (6 decks)

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