Ecosystem Dynamics and Energy Flow Quiz

Quiz
•
Biology
•
10th Grade
•
Easy
+6
Standards-aligned
Mark Leeper
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the primary source of energy for most ecosystems?
The Moon
The Sun
Volcanoes
Ocean currents
Answer explanation
The primary source of energy for most ecosystems is the Sun. It provides the light energy that plants use for photosynthesis, forming the base of the food chain and supporting all life forms in the ecosystem.
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following best describes a food web?
A linear sequence of organisms through which nutrients and energy pass
A complex network of interconnected food chains
A single path of energy flow in an ecosystem
A diagram showing the number of organisms at each trophic level
Answer explanation
A food web is best described as a complex network of interconnected food chains, illustrating how various organisms interact and transfer energy within an ecosystem, unlike a linear sequence or single path.
Tags
NGSS.MS-LS2-3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In an ecosystem, which trophic level contains the most energy?
Primary producers
Primary consumers
Secondary consumers
Tertiary consumers
Answer explanation
Primary producers, such as plants, convert sunlight into energy through photosynthesis, making them the foundation of the energy pyramid. They contain the most energy, which is then transferred to consumers at higher trophic levels.
Tags
NGSS.MS-LS2-3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is a limiting factor in an ecosystem?
Amount of sunlight
Number of predators
Availability of water
All of the above
Answer explanation
All of the options listed—amount of sunlight, number of predators, and availability of water—can limit the growth and survival of organisms in an ecosystem, making 'All of the above' the correct choice.
Tags
NGSS.MS-LS2-1
NGSS.MS-LS2-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the term for the maximum population size that an environment can sustain indefinitely?
Biodiversity
Carrying capacity
Limiting factor
Trophic level
Answer explanation
The term 'carrying capacity' refers to the maximum population size that an environment can sustain indefinitely, making it the correct choice. Other options like biodiversity and limiting factors relate to ecological concepts but do not define this specific capacity.
Tags
NGSS.MS-LS2-4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is an example of a biotic factor in an ecosystem?
Temperature
Soil pH
Predation
Water availability
Answer explanation
Predation is a biotic factor as it involves interactions between living organisms, such as predators and their prey. In contrast, temperature, soil pH, and water availability are abiotic factors, as they are non-living components of the ecosystem.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the role of decomposers in an ecosystem?
They produce energy from sunlight
They consume primary producers
They break down dead organisms and recycle nutrients
They compete with primary consumers
Answer explanation
Decomposers play a crucial role in ecosystems by breaking down dead organisms, which recycles nutrients back into the soil. This process supports plant growth and maintains the balance of the ecosystem.
Tags
NGSS.MS-LS2-2
NGSS.MS-LS2-3
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