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Bio 2 Lab > Lab 8 > Flashcards

Lab 8 Flashcards

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Biology 101 flashcards
1
Q

filter feeder

A

consume small pieces of matter sifted from water

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2
Q

detritovore

A

consuming decomposing animal and plant tissue

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3
Q

bilateral symmetry

A

defined right and left halves

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4
Q

two germ layers

A

ectoderm, endoderm,

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5
Q

three germ layers

A

ectoderm, endoderm, mesoderm

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6
Q

ectoderm

A

outer covering and nervous system

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7
Q

endoderm

A

digestive system

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8
Q

mesoderm

A

skeleton and muscles

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9
Q

acoelomate

A

solid body and no coelom

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10
Q

pseudocoelomate

A

coelom partially lined by mesoderm

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11
Q

coelomate

A

coelom completely lined by mesoderm

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12
Q

what is the difference between the tract and cavity of a digestive system

A

tract is when there are two openings with a separate moth and anus and cavity us when there is only one opening

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13
Q

open circulatory system

A

fluid passes between vessels to chambers

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14
Q

closed circulatory system

A

fluid is contained to vessels

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15
Q

what are the different organs that allow for gas exchange

A

skin
gills
lungs

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16
Q

what are the ways animals can remove nitrogen waste

A

diffusion in skin
nephridia
kidneys

17
Q

hydrostatic skeleton

A

cavity pressurized with fluid

18
Q

exoskeleton

A

tough external skeleton with little flexibility

19
Q

endoskeleton

A

internal skeleton composed of bone and cartilage

20
Q

what phylum have all radial symmetry

A

cnidaria (hydra)

21
Q

what are the four characteristic features of class Mollusca

A
  1. hard external shell
  2. thin layer of tissue called the mantle
  3. a visceral mass that contains most organs
  4. muscular foot for locomotion
22
Q

what is the purpose of the osculum in the porifera

A

outlet for the current of water passing through body wall

23
Q

what is the purpose of the two cerebral ganglia in planaria

A

acts as the brain

24
Q

what is the symmetry for class planaria

A

bilateral

25
Q

prostomium of the earthworm

A

flap of skin covering the mouth

26
Q

nephridia of the earthworm

A

organ specialized for excretion of waste

27
Q

what type of symmetry does a clam have

A

bilateral

28
Q

what is the function of the incurrent and excurrent siphons in the clams

A

filter water

29
Q

what does the nephridia remove

A

nitrogenous waste

30
Q

what is the difference between the cephalothorax and abdomen

A

cephalothorax is where the animal’s head and thoracic organs are found, while the abdomen contains digestive and reproductive structures

31
Q

what is the function of the chitinous teeth that line the stomach in crayfish

A

grinding mechanism

32
Q

what type of circulatory system do crayfish have

A

open

33
Q

what type of symmetry is the starfish

A

radial

Bio 2 Lab (12 decks)

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