Which explains the shape of the food pyramid?

energy gets lost from one trophic level to another

Which of the following is NOT a difference between primary and secondary succession?

development of a climax community

How is the phosphorus cycle different from the nitrogen and carbon cycles?

phosphorus is not stored in the atmosphere

roles of an organism in its ecosystem

Which hierarchy below is correct?

ecosystem>community>population<species

What is an animal adaptation to the hot desert?

animals are active mainly at night

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Science 10 Ecology Review!

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Science 10 Ecology Unit 1

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Questions 33

Answers

1
The picture shows...
habitat loss
habitat fragmentation
deforestation
soil degradation
2
Which describes a biotic factor?
trees
rocks
precipitation
water
3
Which type of bacteria convert nitrogen gas from the air (N2) into ammonium (NH4+)?
denitrogen-fixing bacteria
denitrifying bacteria
nitrifying bacteria
nitrogen-fixing bacteria
4
Species that naturally inhabit an area are called...
introduced species
native species
classic species
foreign species
5
Which explains the shape of the food pyramid?
energy gets lost from one trophic level to another
energy remains constant from one trophic level to another
energy is gained from one trophic level to another
biomass increases from one trophic level to another
6
Detrivores eat...
plants only
animals and plants
animals only
dead animals and plants
7
This is an example of...
mutualism
parasitism
commensalism
altruism
8
In primary succession, what grows first?
lichens
grasses
trees
shrubs
9
The producer in the food chain below is...
sun
wolf
deer
grass
10
The image below is an example of...
mutualism
parasitism
commensalism
behavioural
11
This shows...
soil degradation
habitat fragmentation
soil compaction
aeration
12
Each step of the food pyramid is called a...
food web
trophic level
consumer level
food level
13
Which of the following is NOT a difference between primary and secondary succession?
presence or absence of soil
starting from rock
the speed of succession
development of a climax community
14
Which biome is represented by the climatograph?
tundra
tropical rainforest
boreal forest
temperate rainforest
15
This equation represents...
Sedimentation
Cellular respiration
Carbonation
Photosynthesis
16
What happens if baleen and sperm whales are overexploited?
sea otters increase
sea urchins decrease
kelp decreases
sperm whales increase
17
How is the phosphorus cycle different from the nitrogen and carbon cycles?
phosphorus is not stored in the ocean
phosphorus is not decomposed
phosphorus is not stored in the atmosphere
phosphorus is not leached into soil
18
The secondary consumer in the food chain below is the...
frog
grasshopper
hawk
snake
19
Porcupines having sharp quills is an example of a _________________ adaptation
physiological
structural
behavioural
altruistic
20
What happens if sea urchins are overexploited?
increase in sea urchins
increase in kelp
increase in baleen whales
increase in sea otters
21
What is a niche?
the behaviours of an organism
roles of an organism in its ecosystem
how an organism interacts with other species
the characteristics of an organism
22
Which of the following is the biggest?
ecosystem
biosphere
habitat
biome
23
Why did PCB's greatly affect orcas?
PCBs are synthetic chemicals
PCBs do not bioaccumulate
PCBs have a short half-life
PCBs biomagnify
24
Which hierarchy below is correct?
ecosystem>community>population<species
community>ecosystem>population>species
community>ecosystem>species>population
ecosystem>community>species>population
25
What is an animal adaptation to the hot desert?
adapted to live in trees
animals are active mainly at night
flat teeth to grind plant materials
compact bodies to reduce heat loss
26
The process shown where bacteria is used to clean up oil spills is called...
biomagnification
bioaccumulation
bioremediation
biodegradation
27
The process shown is called...
adaptive radiation
natural selection
secondary succession
primary succession
28
This is an example of...
ecological succession
adaptive radiation
natural selection
biomagnification
29
Which is an example of a physiological adaptation?
large beak
thick fur
photosynthesis
burrowing to escape predators
30
Which biome is the coldest?
tropical rainforest
boreal forest
tundra
temperate rainforest
31
Omnivores eat...
only plants
animals and plants
only animals
dead animals and plants
32
Which biome is represented by the climatograph?
desert
temperate deciduous forest
boreal forest
tundra
33
Carbon, Nitrogen and Phosphorus are examples of ___________ that cycle
gases
DNA
atoms
nutrients

Science 10 Ecology Review! Flashcards | StudBud