Ecology- habitat and way of life Flashcards

1
Q

Ecosystem

A

encompasses all biota and abiota

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2
Q

biota

A

all living organisms

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3
Q

abiota

A

chemical properties & physical properties

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4
Q

ecology

A

study of the relationship between organisms and their environment

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5
Q

abiotic factors: chemical factors

A
  1. nutrients

2. salt content (amount)

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6
Q

abiotic factors: physical factors

A
  1. pressure
  2. depth
  3. current
  4. waves
  5. light
  6. sediment
  7. tide
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7
Q

abiotic factors have an influence on organisms how?

A
  1. activity
  2. reproduction
  3. distribution
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8
Q

osmosis

A

diffusion of h2O through a semi-permeable membrane (in order to reach homeostasis)

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9
Q

hypertonic solution

A

when there is a higher concentration, so water leaves the cell

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10
Q

hypotonic solution

A

when there is a lower concentration, so water enters the cell

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11
Q

marine fish salt content compared to their environment

A

less salt than their environment

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12
Q

fresh water fish salt content compared to their environment

A

saltier than their environment

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13
Q

how do marine fish counteract the osmotic diffusion of water out of their cells?

A
  1. body fluids are less salty than water
  2. osmotic water loss
  3. drinks sea water
  4. salt excretion by gills
  5. low urine production by the kidneys
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14
Q

how do fresh water fish counteract the osmotic diffusion of water out of their cells?

A
  1. not drinking water
  2. urinate frequently
  3. absorbs salt ions through chloride cells in the gills
  4. bodily fluids more salty than water
  5. osmotic water gain
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15
Q

effect of light on PP: photic zone

A

enough light for photosynthesis

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16
Q

effect of light on PP: schemerzone (mesopalegic zone)

A

little light, no photosynthesis

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17
Q

effect of light on PP: aphotic zone

A

no light

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18
Q

habitat

A

place within an ecosystem where an organism or a community of organisms lives, including all living and nonliving factors or conditions of the surrounding environment.

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19
Q

benthic zone

A

sea floor

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20
Q

pelagic zone

A

the water column

21
Q

Pelagic province is made up of which 5 zones?

A
  1. epipelagic
  2. mesopelagic
  3. bathypelagic
  4. abyssalpelagic
  5. hadalpelagic
22
Q

Depth of the epipelagic zone

A

0-200m

23
Q

Depth of the mesopelagic zone

A

200-1000m

24
Q

Depth of the bathypelagic zone

A

1000-2000m

25
Q

Depth of the abyssalpelagic zone

A

2000-6000m

26
Q

Depth of the hadalpelagic zone

A

> 6000m

27
Q

Benthic province is made up of which 5 zones?

A
  1. Littoral
  2. Sublittoral
  3. Bathyal
  4. Abyssal
  5. Hadal
28
Q

Depth of the littoral zone

A

intertidal

29
Q

Depth of the sublittoral zone

A

0-200m

30
Q

Depth of the bathyal zone

A

200-2000m

31
Q

Depth of the abyssal zone

A

2000-6000m

32
Q

Depth of the hadal zone

A

> 6000m

33
Q

Taxonomy

A

distribution of organisms in groups (taxa) on the basis of relationships

34
Q

Carolus Linneaus

A

binominal classification. Each species has a two part species name. The first part is the genus/genera (geslacht) and the second part is the species designation (soortsaanduiding–>epitheton). Together they create the scientific names of species which is in Latin

35
Q

classification of species on the basis of lifestyle

A
  1. plankton
  2. nekton
  3. benthos
36
Q

plankton

A

cannot swim against the current but may move within the current. Contains the groups diatoms and dinoflagellates, as well as many more groups.

37
Q

fytoplankton

A

use photosynthesis as the most important energy source

38
Q

zooplankton

A

uses other organisms as the most important energy source. Includes copepoda and forminifera as well as many other groups.

39
Q

diatoms

A

single-celled algae with a cell wall of silica. Many kinds are planktonic. The silica frustrule that surrounds the diatom cells consists of an epitheca (a lid of sorts) and a hypotheca (a box of sorts)

40
Q

dinofllagelates

A

single-celled algae with two flagella that occur in large numbers in marine plankton and some in freshwater. They can often produce toxin that may accumulate in shellfish, causing poisonings in humans when eaten.

41
Q

copepoda

A

a type of zooplankton. They are small crustaceans in which some are planktonic and some are benthic. They may feed on diatoms

42
Q

forminifera

A

a type of zooplankton. They are single-celled organism that create a porous shell out of calcium carbonate.

43
Q

Nekton

A

swim themselves and are not dependent on currents. There are some limits and strategies.

44
Q

Types of Nekton

A
  1. fish
  2. mammals
  3. mollusks
  4. reptiles
  5. birds
45
Q

epifauna

A

lives on the bottom

46
Q

infauna

A

lives in the bottom

47
Q

pelagic

A

lives in the water column

48
Q

demersaal

A

lives on/in or just above the bottom