Population Ecology Fundamentals
Explore the basics of population ecology, including factors affecting population size, food webs, and ecosystem dynamics for Grade 7 Science.
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Population Ecology Fundamentals
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Read each question carefully and answer to the best of your ability. Use the diagrams to help you understand the concepts.
1. Which of the following is NOT a factor that can limit the growth of a population?
Food availability
Predation
Unlimited space
Disease
2. What term describes all the living organisms in an area, along with their physical environment?
Population
Community
Ecosystem
Biome
1. A carrying capacity is the maximum population size that an environment can sustain indefinitely.
True
False
2. Limiting factors are only abiotic (non-living) components of an ecosystem.
True
False
1. A group of individuals of the same species living in the same area is called a .
2. Organisms that produce their own food are called .
3. The role an organism plays in its community is known as its .
1. Observe the food web below. Identify one producer, one primary consumer, and one secondary consumer.
2. Explain how a sudden decrease in the population of deer might affect the population of wolves in the same ecosystem.
Match each term with its correct definition.
1. Population Density
a. All the populations of different species living and interacting in an area.
2. Community
b. The number of individuals of a species per unit area or volume.
3. Limiting Factor
c. Any biotic or abiotic factor that restricts the numbers, reproduction, or distribution of organisms.