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Unit 1: Ecosystem Day 1 Test Flashcards | StudBud
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Unit 1: Ecosystem Day 1 Test
Unit 1: Ecosystem Day 1 Test
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#science #earthsciences
Flashcards
35 cards
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Practice quiz
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Questions
35
Answers
1
Is 27 degrees C is the optimum temperature for a plant, this means that the plant will do
Just as well at lower temps
Less well at both higher and lower temps
Better at both higher and lower temperatures
2
Where conditions are between an organisms optimum and its limit of tolerance
The individual organism will be under stress & pop will be smaller/optimal
Pop of the organism will be small smaller than where conditions are optimal
Individual organisms will either be under stress nor will pop be small/ opt
3
The large functional unit of the biosphere that contain loving communities interacting with their abiotic environment
Individuals
Populations
Ecosystems
4
In most ecosystems, the producers are the
Animals
Green plant
Humans
5
The limiting factor which is responsible for the transitions from force to grasslands to deserts is
Light
Soul type
Water
6
Organisms that feed on other living organisms as a source of their energy and nutrients are called
Detritus feeders
Consumers
Autotrophs
7
The climate of a region refers to its
Topography
All abiotic factors
Temperature and rainfall
8
The population density of species is
Its growth rate
It’s life span
The number of individuals per unit area
9
All primary consumers belong to what feeding level of a web
Trophic level three
Trophic level one
Trophic level two
10
Which of the following is NOT abiotic
Bacteria
Temperature
Rainfall
11
A description of all the feeding relationships among plants and animals, and among various animals is best defined as
Trophic levels
A food chain
A food web
12
The point where an organism just barely survives is called
Range of tolerance
Limit of tolerance
Optimal range
13
A warm region receiving minimal precipitation will have ______ vegetation.
Tundra
Desert
Forest
14
Environmentalists
Are concerned with people and their environment
Are against all development
Have virtually no influence
15
The process that producers preform that is not performed by other organisms in most ecosystems is
Glycolysis
Photosynthesis
Respiration
16
Animals that feed directly on green plants are called
Carnivores
Herbivores
Detritus feeders
17
The term “biomass pyramid” refers to the fact that at each higher Trophic level the
Biomass is smaller
Organisms are fewer
Biomass is larger
18
Several related ecosystems make up
A species
A biome
The biosphere
19
A species is best defined as
Any individual plant, animal, or microbe
Total pop of a kind of plant, animal, mic all mems potential interbreed
Any group of plant, animal, or microbe
20
Approximately what percentage of biomass energy will be passed onto the next energy level in a typical food chain
50%
1%
10%
21
The first tropic level refers to
All herbivores
All green plants
All consumers
22
The concept of sustainable development is to
To curtail all further development
Meet the needs for the indefinite future
Continue as always and assume that things will work out for the best
23
All of the species on earth together with their environment collectively comprise the
Hydrosphere
Biosphere
Geosphere
24
The term that applies to whether or not a process can be continued indefinitely is
Adaptability
Sustainability
Succession
25
If environmental factors change a species may
Margaret to a new location or conditions are the same as before
All of the above
Become extinct
26
Which of the following biomes does NOT occur in the US
Desert
Deciduous forest
Tropical rain forest
27
The three major biotic compote ecosystem structure are
Producers, consumers, and decomposers
Consumers, detritus feeders, and decomposers
Producers, herbivores, and carnivores
28
Which of the following derive energy for growth directly from light
Autotrophs
Decomposers
Heterotrophs
29
The main problem caused by population growth is
Increasing demand for all resources
Crowding
Inefficient food transportation
30
When we speak of the “biomass of producers” in a ecosystem, we refer to
The total number of individual producer organisms
The combined weight or mass of all producer organisms added together
The total number of species of producers
31
The major natural ecosystems of the central US (Iowa ,kansas, Nebraska) and Canada was
Deciduous forests
Grassland
Desert
32
Which of the following would be considered inorganic
Wood and leather
Complex molecules that make up tissues of living organisms
Nitrogen, water, and phosphates
33
What kind of relationship generally occurs among cats and mice?
Mutualistic
Predator-prey
Host-parasite
34
Which is NOT true about sustainable yield?
It relies on reproductive capability in nature
It refers to indefinitely long periods of time
It is always successful
35
Which of the following statements regarding parasites is false?
A parasite may be a plant, an animal, or a microbe
A parasite, generally harms, but does not kill the organism it feeds on
The organism a parasite feeds on is its prey
