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Ecosystems
Ecosystems
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Ecosystems: Human Impact, relationships, and biodiversity.
Flashcards
28 cards
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Practice quiz
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Host live
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Questions
28
Answers
1
What is an advantage of artificial reefs?
They can release harmful toxins into the water
They help prevent coastal erosion
They disrupt established ecosystems
They decrease biodiversity in an area
2
How does biodiversity contribute to the sustainability of an ecosystem?
More species & more adaptations increase chance of survival
more genetic variation increases chance of surviving disease
All of these
Lots of herbivores & producers means more food for predators
3
Which organisms represent a producer/consumer relationship?
Algae and white suckers
Phytoplankton and mummichogs
Amphipods and channel catfish
Small invertebrates and amphipods
4
The number of resources in an ecosystem is called...
biotic
abiotic
competition
limiting factors
5
Which of the following contributes to the pollution of groundwater?
overhunting
ocean waste dumping
overfishing
septic systems
6
This relationship is good for one organism, and does not harm or benefit the other organism...
Mutualism
Commensialism
Parasitism
A flower and a bee
7
Which of the following represents a parasite/host relationship?
Mrs. Wooten eating hot cheetos
A horse eating hay
a leech sucking blood from a Weigle
A shark eating a sea lion
8
The fight for limited resources in an ecosystem is called...
hunting
energy
competition
food
9
How many omnivores are present in this food?
2
3
0
1
10
Which is an example of secondary succession?
breaking down of rock by mosses
growth of weeds after clearing land for building
decreased sunlight in a forest
lichens growing on rock after glacier melts
11
Biotic factors could be...
all of these are biotic factors
grass
mice
worms
12
I
n biologic terms, a 'niche" is...
A wall
A tree branch
A small plant
An organism's role in a habitat
13
Competition occurs when...
Niches do not overlap
Niches overlap
Organisms occupy a niche
Niches are non-existent
14
What is an example of man-made pollution?
pesticide
rainfall
sediments
pollen allergens
15
_________ are organisms cannot manufacture their own food.
Plants
Algae
Producers
Consumers
16
How many producers are in the food web below?
1
0
3
2
17
All of the individuals from the same species make up a(n)
Ecosystem
Population
Community
Organism
18
Lichens growing on exposed rocks after a glacier recedes is an example of...
primary succession
exponential growth
a climax community
secondary succession
19
A relationship that is good for both organisms is called...
A flower and bee
Parasitism
Mutualism
Commensialism
20
If Species B were taken from the area it shares with Species A, Species A would likely inhabit
Zones I, II, and III
Zone III only
Zone I only
Zone II only
21
What is a major reason for the depletion of large fish in the world's oceans?
commercial fishing
acid rain
more people at the beach
an increase in sharks
22
How many carnivores are present in this food web?
3
9
0
5
23
Which shows only consumers?
Bugs and Water
Lion and Giraffe
People and Trees
Flowers and Bees
24
Which of the following represents a producer/consumer relationship?
tiger catching and eating a zebra
a mushroom growing on a dead tree
mosquito sucking blood from a human
a cow eating grass
25
True or false: parasitism is similar to predation.
Parasitism is the same as Predation
False
True
Can't determine
26
The habitat with the greatest sustainability will be the one that -
Has the greatest overall biodiversity
Maintains a moderate climate all year round
Has few top-level predators
Receives the highest annual rainfall
27
The population of an organism will likely decrease if there is an increase in
rainfall
soil nutrients
predators
food resources
28
Humans can protect the sustainability of the rainforest by pursuing policies that will -
Encourage harvesting of rainforest trees
Maintain the biodiversoty
Encourage more farming
Increase the use of rainforest plants
