Paper 1: Section B - The Living World Flashcards

Ecosystems, tropical rainforests, cold environments

1
Q

What are global scale ecosystems called?

A

Biomes

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2
Q

Name a producer in a small pond?

A

Algae

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3
Q

Name a consumer in a small pond?

A

water beetle

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4
Q

Name a food chain in a small pond?

A

algae > water beetle > dragonfly

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5
Q

Name a producer in Epping Forest?

A

177 species of mosses

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6
Q

Name a primary consumer in Epping forest?

A

Beetles

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7
Q

Name a secondary consumer in Epping forest?

A

Rabbit

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8
Q

Name a tertiary consumer in Epping forest?

A

Fox

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9
Q

Describe a food chain in Epping Forest?

A

shrubs > beetles > rabbit > fox

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10
Q

Name 3 natural causes of change in ecosystems?

A

pathogen, adaptation, extreme weather

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11
Q

Name 3 human causes of change in ecosystems?

A

Eutrophication, deforestation/new hedgerows
hunting

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12
Q

What degrees are Tundra found at?

A

60-70 North

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13
Q

What degrees are Tropical rainforests found at?

A

Equator
Capricorn/Cancer

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14
Q

What degrees are polar found at?

A

poles

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15
Q

Where are deserts found?

A

30 degrees N/s

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16
Q

Why are tundra plants low growing?

A

Retain heat and moisture

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17
Q

How much rain does a desert recieve?

A

250 mm

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18
Q

How much of the Earth is tropical rainforest?

A

6% land

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19
Q

How many species live in tropical rainforests?

A

More than half

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20
Q

What are the temperatures in polar regions?

A

<-50 degrees

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21
Q

How much medicine originates from tropical rainforests?

A

25%

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22
Q

What does low pressure lead to?

A

high rainfall

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23
Q

Are there distinct seasons in a tropical rainforest?

A

no it is hot and humid all year round

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24
Q

Which biome has the highest biodiversity?

A

Tropical rainforests

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25
What is the iron-rich soil in tropical rainforests called?
infertile latosol
26
Name the layers of the rainforest in order:
Forest floor, understory, canopy, emergent
27
What is the average temperature in a tropical rainforest?
27 degrees
28
What is the annual rainfall in a tropical rainforest?
>2000 mm rain
29
What are the distinct biomes caused by?
Global atmospheric circulation
30
What is the adaptation to latosol?
Shallow roots
31
The nutrient cycle is...
interdependent
32
What is the adaptation of epiphytes?
Grow as parasites to reach sun. Get nutrients from air
33
What is the adaptation of buttress roots?
Shallow, stability and water distribution
34
What is the adaptation of lianas?
Hang on trees to get sunlight
35
What is the adaptation to heavy rainfall.
Smooth bark and drip tips so runs off
36
Why do plants have wide leaves?
Maximise sunlight absorption
37
Why are animals in rainforests adapted to be smaller?
Easier to move through dense vegetation
38
How to animals adapt to climb in canopy?
Long and strong limbs
39
How do animals hide from rainforest predators?
camoflage
40
How do animals avoid being eaten in the rainforest?
Poisons and venoms
41
Give 3 threats to biodiversity in tropical rainforests
deforestation, resource exploitation, climate change
42
Don't forget about soil erosion
Leaching and climate change
43
How much of the world's oxygen do rainforests produce?
28% oxygen
44
How many anti-cancer plants have been found in rainforests?
2000
45
How much fresh water comes from the Amazon basin?
20%
46
How do rainforests provide employment?
construction, mining, tourism, farming, HEP
47
What resources can be found in a rainforest?
timber, minerals, spices
48
What is a debt reduction?
Reduced debt in return for rainforest that is protected.
49
Name one international agreement
Hardwood forestry (FSC)
50
What is the temperature in polar regions?
Below -50
51
What is the temperature in tundra regions?
-20
52
What are the winds in polar regions
strong
53
Does the tundra have seasons?
Yes - brief warm summer
54
What is the soil like in polar regions?
Permafrost covered in ice
55
What is the soil like in tundra regions?
surface permafrost melting summer and causing waterlogging
56
What plants grow in polar regions?
Few mosses and lichens on the fringes
57
What are the plants in the tundra?
Low-growing flowering plants with adaptations.
58
Name 2 adaptations of plants to cold environments:
low-growing small leathery leaves hairy stems - insulate
59
Name 2 adaptations of polar bears to the polar?
Thich fur, foot pads
60
Name adaptations of the Bearberry plant:
Thick stems small leathery leaves red berries
61
How can technology reduce risk to cold environments?
trans-Alaskan pipeline raised, insulated, automatic shut-off
62
How does governmental action reduce risk to cold environments?
Manage protected wilderness areas Antarctic Treaty
63
How do conservation groups protect cold environments?
WWF to plan for sustainable future.