Questions and Answers
What is a habitat?
A habitat is a natural environment where an organism lives and thrives.
What are abiotic factors?
Abiotic factors are non-living environmental components like soil, air, water, weather, and climate.
What are biotic factors?
Biotic factors are living components of an ecosystem such as plants, animals, and microorganisms.
The word 'ecosystem' was first used in the year _____ by A.G. Tansley.
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Can an ecosystem be affected by human interventions?
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What do food chains and food webs represent in an ecosystem?
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What is the purpose of studying ecosystems?
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Which of the following are components of an ecosystem?
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What is meant by energy flow in the ecosystem?
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Study Notes
Energy Flow in the Ecosystem
- Organisms depend on their habitat for survival; interrelationship of abiotic (non-living) and biotic (living) factors is crucial.
- Adaptation occurs in organisms based on varying abiotic and biotic conditions in their habitat.
- Increased populations of adapted organisms can influence other species in the same environment.
Study of Interrelationships
- Conduct field observations in a 1m² area to study local insect, frog, bird, and plant populations.
- Record findings: number of organisms observed over a minimum of five days, ensuring accurate counting.
- Identify potential food chains or food webs present in the area based on observations.
- Analyze and compare biotic and abiotic factors, noting differences between morning and evening conditions.
Interdependency in Ecosystems
- Every organism relies on others and their environment for basic needs such as food, reproduction, and shelter.
- Key aspects of interrelationship include:
- Biotic components interactions through food chains, webs, and ecological pyramids.
- Biotic and abiotic interactions, focusing on the effects of soil, air, water, and weather.
Meaning and Definition of Ecosystem
- An ecosystem is a self-coordinated system formed by the interrelationships of environmental components.
- The term "ecosystem" was introduced by A.G. Tansley in 1935, highlighting continuous exchange of nutrients and energy.
- Ecosystems can change due to natural phenomena and human activities, affecting environmental conditions.
Importance of Models in Ecosystem Study
- Food chains, food webs, ecological pyramids, and nutrient cycles serve as models to understand organism interactions and environmental relationships.
- Collecting and analyzing data allows for predictions about environmental conditions and comparative studies of different areas.
Continuous Change in Ecosystems
- Ecosystems are dynamic; conditions are not static and can be influenced by both natural occurrences and human interventions.
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Description
This quiz covers Chapter 5 of the Class 10 Science curriculum, focusing on energy flow in ecosystems. Students will explore the interrelationships between abiotic and biotic factors and the importance of habitats for various organisms. Test your knowledge on the concepts that affect survival in ecological environments.
