Grade 12 Ecology Worksheet
This worksheet covers key concepts in ecology for Grade 12 students, including food webs, population dynamics, and ecosystem types.
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Grade 12 Ecology Worksheet
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Date:
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Read each question carefully and provide your best answer. For multiple-choice questions, circle the correct option.
1. Which of the following best describes a community in ecological terms?
All the populations of different species living and interacting in a particular area.
A group of individuals of the same species living in the same area.
The living organisms and their non-living environment interacting as a functional unit.
All the ecosystems on Earth.
2. What is the primary role of decomposers in an ecosystem?
To produce organic compounds from inorganic sources.
To consume other organisms for energy.
To break down dead organic matter and return nutrients to the soil.
To regulate global climate patterns.
3. Study the food web below. Identify one producer, one primary consumer, and one secondary consumer.
Producer:
Primary Consumer:
Secondary Consumer:
4. Keystone species are organisms that have a disproportionately large effect on their environment relative to their abundance.
True
False
5. A stable ecosystem is characterized by rapid and frequent changes in species composition.
True
False
6. The maximum population size that a particular environment can sustain is known as its .
7. succession occurs in an area where no soil exists, such as on new volcanic rock.
8. Describe two abiotic factors that significantly influence the characteristics of a desert ecosystem.
9. Discuss the potential consequences of climate change on biodiversity, providing specific examples of how different ecosystems or species might be affected.
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