6 Questions
Which of the following is an example of a biotic factor in an ecosystem?
Grass
Which of the following best describes a keystone species in an ecosystem?
A species that has a disproportionately large effect on its environment relative to its abundance
What is the primary difference between primary and secondary succession?
Primary succession occurs on bare rock, while secondary succession occurs in areas where soil is already present
Which of the following best describes a climax community in ecological succession?
A stable, self-sustaining community at the final stage of succession
What is the term for the maximum population size that the environment can sustain indefinitely?
Carrying capacity
What is the primary role of decomposers in an ecosystem?
Break down organic matter and recycle nutrients
Study Notes
Ecosystem Factors
- Biotic factors in an ecosystem include living organisms, such as plants, animals, and microorganisms.
Keystone Species
- A keystone species is a species that has a disproportionate impact on its environment and plays a crucial role in maintaining the structure and function of an ecosystem.
Ecological Succession
- The primary difference between primary and secondary succession is the presence or absence of soil: primary succession occurs in areas where no soil exists, while secondary succession takes place in areas where soil is already present.
Climax Community
- A climax community is the final stage of ecological succession, characterized by a stable and diverse community of organisms that has reached a balance with its environment.
Population Size
- The term for the maximum population size that the environment can sustain indefinitely is called the carrying capacity.
Decomposers
- The primary role of decomposers in an ecosystem is to break down organic matter and recycle nutrients, allowing them to be reused by other organisms.
Test your knowledge of ecology and ecosystems with this Class 12 quiz. Identify biotic factors, understand the role of keystone species, and differentiate between primary and secondary succession. Perfect for students studying ecology or anyone interested in environmental science.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
