Ecosystem Flashcards

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1
Q

What is an ecosystem?

A

Specific area where living organisms, (biotic components) interact with each other and their nonliving a ( abiotic components) environment .

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2
Q

Give different examples of ecosystems

A

Sky
water
Savannah
rainforest
tropical forest

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3
Q

Identify biotic components of an ecosystem

A

Birds
Penguin
Ants
Plants or flowers
Fish and worms

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4
Q

Identify abiotic components in an ecosystem.

A

Rocks
Sand dirt
Water
Bones of corpses

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5
Q

How many characteristics does a organism have to have in order to be classified alive?

A

7

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6
Q

List seven characteristics

A

Movement
Respiration
Sensitivity
Nutrition
Excretion
Reproduction
Growth

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7
Q

Describe the characteristic movement

A

Action of an organism part of the organism, causing a change in position.

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8
Q

Describe the characteristic respiration (4)

A

Chemical reaction, (taking place in all living cells) that breaks down glucose and releases energy for metabolism.

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9
Q

Describe characteristic sensitivity

A

Ability to detect and respond to changes in the internal and external environment.

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10
Q

Describe characteristic nutrition (4)

A

Taking in materials for energy growth and development.

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11
Q

Describe the characteristic excretion

A

Removal of waste products of metabolism, and substances, in excess to recoverment.

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12
Q

Describe the characteristic reproduction

A

Make more of the same kind of organism.

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13
Q

Describe the characteristic growth

A

Permanent increase in size and dry mass.

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14
Q

What is another name for ecosystems?

A

Biomes

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15
Q

Name the different types of biomes found in South Africa (7)

A
  • Savanna
  • Succulent Karoo
  • Nama Karoo
  • Thicket
  • Fynbos
  • Forest
  • Grassland
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16
Q

What is a habitat?

A

Place where organism lives

17
Q

What different habitats exist in ecosystems

  • trees
  • Ants
  • Lion
  • ferns
  • moss
  • jackal
  • giraffe
A
  • ground
  • ant hill
  • savannah
  • forest, shady soil
  • damp sandy soil
  • barrow in the soil
  • Savannah
18
Q

What is bioaccumulation?

A
  • toxic substances in the environment, buildup in organisms in a food chain.
  • Produces will have less toxic substances than organisms higher up in the food chain.
19
Q

What impact does bioaccumulation have in an ecosystem? (2)

A
  • Organisms can become sick and even die.
  • People eating the organisms can also become sick.
20
Q

What are invasive species?

A

A species that is not native to an (area brought to country by people)

21
Q

Name some invasive species found in Namibia. (2)

A

Honey mosquito
Water fern

22
Q

How does the introduction of an invasive species in an area affect the rest of ecosystem? (3)

A
  • Invasive species will often outcompete the local organisms for available resources.
  • Local organisms will decrease in number.
  • Local organisms could become extinct