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Test: Our Environment - Class 7 MCQ


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25 Questions MCQ Test - Test: Our Environment

Test: Our Environment for Class 7 2024 is part of Class 7 preparation. The Test: Our Environment questions and answers have been prepared according to the Class 7 exam syllabus.The Test: Our Environment MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Our Environment below.
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Test: Our Environment - Question 1
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What does the term "environment" signify based on its French origin?

Detailed Solution for Test: Our Environment - Question 1
The term "environment" originates from the French word "environer," which signifies 'to surround'. This implies that the environment refers to the surroundings that encircle an organism. Understanding this origin helps us grasp the fundamental concept of the environment as the surroundings in which living beings exist and interact.
Test: Our Environment - Question 2
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How can the environment be classified based on its nature?

Detailed Solution for Test: Our Environment - Question 2
The environment can be classified into natural and artificial environments. Natural environments encompass elements like forests, oceans, and mountains, which exist without human intervention. On the other hand, artificial environments are human-made settings such as cities, buildings, and farms. Recognizing this distinction is crucial for understanding the diverse settings that organisms inhabit and interact with.
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Test: Our Environment - Question 3
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What is the primary focus of an organism's environment?

Detailed Solution for Test: Our Environment - Question 3
The primary focus of an organism's environment is to offer challenges for survival. Natural environments present various obstacles and opportunities that organisms must navigate to thrive and reproduce. These challenges include finding food, evading predators, adapting to changing conditions, and competing for resources. Understanding the dynamic relationship between organisms and their environments is essential for comprehending the principles of ecology and adaptation.
Test: Our Environment - Question 4
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How do natural and artificial environments differ in terms of their origin?
Detailed Solution for Test: Our Environment - Question 4
Natural environments evolve naturally over time through geological processes, climate changes, and biological interactions. In contrast, artificial environments are deliberately designed and constructed by humans to serve specific purposes, such as urban development, agriculture, or industry. Recognizing this distinction helps us appreciate the complex interplay between natural landscapes and human interventions in shaping the world around us.
Test: Our Environment - Question 5
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What term describes the collection of all living and non-living entities that naturally exist on Earth?
Detailed Solution for Test: Our Environment - Question 5
The term that describes the collection of all living and non-living entities that naturally exist on Earth is the biosphere. The biosphere includes all ecosystems and living organisms on Earth, ranging from the depths of the ocean to high up in the atmosphere. It represents the interconnected web of life where living organisms interact with each other and their physical environment.
Test: Our Environment - Question 6
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Which type of environment encompasses elements formed from the interaction between humans and nature?
Detailed Solution for Test: Our Environment - Question 6
The type of environment that encompasses elements formed from the interaction between humans and nature is the artificial or human-made environment. This environment includes structures, infrastructures, and landscapes that have been created or significantly altered by human activities. It reflects the impact of human civilization on the natural world, such as cities, roads, and agricultural fields.
Test: Our Environment - Question 7
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What do forests, oceans, mountains, and wildlife collectively represent in the context of the environment?
Detailed Solution for Test: Our Environment - Question 7
Forests, oceans, mountains, and wildlife collectively represent the natural environment. These elements are part of the Earth's natural ecosystems and play crucial roles in maintaining ecological balance and supporting biodiversity. The natural environment encompasses all non-human-made surroundings, including landscapes, ecosystems, and habitats that have evolved without direct human intervention.
Test: Our Environment - Question 8
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Which of the following is an example of an element of the artificial or human-made environment?
Detailed Solution for Test: Our Environment - Question 8
A residential area is an example of an element of the artificial or human-made environment. Residential areas are developed to accommodate human habitation, consisting of houses, buildings, roads, and other infrastructures built by human activities. These areas reflect human settlement patterns, urban planning, and the interaction between human societies and the natural landscape.
Test: Our Environment - Question 9
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What do the abiotic elements of the environment encompass?
Detailed Solution for Test: Our Environment - Question 9
The abiotic environment consists of non-living components in the environment, including the lithosphere, hydrosphere, and atmosphere based on their physical characteristics. These elements play a crucial role in shaping the environment and influencing the living organisms that inhabit it.
Test: Our Environment - Question 10
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What does the biotic environment encompass?
Detailed Solution for Test: Our Environment - Question 10
The biotic environment encompasses all living organisms such as plants and animals. It is a critical component of the environment, interacting with the abiotic elements to form complex ecosystems that support life on Earth. Biodiversity within the biotic environment plays a key role in maintaining ecological balance and sustainability.
Test: Our Environment - Question 11
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Which components are included in the physical elements or the abiotic environment?
Detailed Solution for Test: Our Environment - Question 11
The physical elements or the abiotic environment comprise non-living components in the environment, including the lithosphere, hydrosphere, and atmosphere based on their physical characteristics. These elements form the foundation of the environment and provide the necessary conditions for supporting life forms.
Test: Our Environment - Question 12
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Which type of organisms are capable of producing their own food within the biosphere?
Detailed Solution for Test: Our Environment - Question 12
Autotrophs, such as green plants, have the ability to create their own food through processes like photosynthesis, utilizing water, carbon dioxide, and sunlight. This self-sustaining characteristic is essential as they form the base of the food chain, providing energy for other organisms within the ecosystem.
Test: Our Environment - Question 13
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In the context of the biosphere, what is the role of consumers?
Detailed Solution for Test: Our Environment - Question 13
Consumers within the biosphere rely directly or indirectly on producers like plants for their food. By consuming other organisms, consumers obtain the energy necessary for their survival, showcasing the interdependence and interconnectedness of life within ecosystems.
Test: Our Environment - Question 14
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How do decomposers contribute to the biosphere's ecosystem?
Detailed Solution for Test: Our Environment - Question 14
Decomposers play a vital role in the ecosystem by breaking down dead organic matter and recycling nutrients back into the environment. This process is essential for nutrient cycling, ensuring that essential elements like carbon and nitrogen are available for plants and other organisms, ultimately supporting the sustainability of the biosphere.
Test: Our Environment - Question 15
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What is the primary function of decomposers in an ecosystem?
Detailed Solution for Test: Our Environment - Question 15
Decomposers, such as bacteria, play a crucial role in breaking down dead animals and plants in an ecosystem. They are responsible for the decomposition process, breaking down organic matter into simpler substances that can be recycled by other organisms. This process is essential for nutrient cycling within the ecosystem, ensuring that essential nutrients are returned to the soil for use by plants and other organisms.
Test: Our Environment - Question 16
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In an ecosystem, what do food chains represent?
Detailed Solution for Test: Our Environment - Question 16
Food chains represent the transfer of energy between organisms in an ecosystem. They illustrate the flow of energy from one organism to another as they consume each other. Energy is transferred through the food chain starting from producers (plants) to primary consumers (herbivores), then to secondary consumers (carnivores or omnivores), and so on. Each link in the food chain represents a transfer of energy from one organism to another.
Test: Our Environment - Question 17
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How are ecosystems defined?
Detailed Solution for Test: Our Environment - Question 17
Ecosystems are defined as natural units that comprise both non-living (abiotic) elements like land, water, and air, as well as living (biotic) elements such as plants and animals. These components interact with each other and with the physical environment to form a distinct and dynamic system. Ecosystems can vary in size and complexity, ranging from a small pond to a vast forest.
Test: Our Environment - Question 18
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Why are food webs considered finely balanced in an ecosystem?
Detailed Solution for Test: Our Environment - Question 18
Food webs in an ecosystem are considered finely balanced because they are interconnected systems where the removal or destruction of one link can have cascading effects on other organisms within the web. Each organism in a food web depends on other organisms for energy, and any disruption to this delicate balance can lead to significant impacts on the entire ecosystem. This interconnectedness highlights the complexity and interdependence of organisms within an ecosystem.
Test: Our Environment - Question 19
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How do changes in the abiotic environment affect the biotic environment in an ecosystem?
Detailed Solution for Test: Our Environment - Question 19
Changes in the abiotic environment, such as temperature shifts or alterations in precipitation patterns, can lead to changes in the types of living organisms present in an ecosystem. This can result in certain species thriving while others may struggle to survive. For example, an increase in temperature in a forest ecosystem may favor the growth of certain plant species over others, thereby altering the composition of the ecosystem.
Test: Our Environment - Question 20
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What term is used to describe human beings and their interactions with the environment around them?
Detailed Solution for Test: Our Environment - Question 20
The term used to describe human beings and their interactions with the environment around them is the "Human Environment." This concept encompasses all the resources that are essential for human prosperity and survival, highlighting the interdependence between humans and their surroundings.
Test: Our Environment - Question 21
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How did early humans generally coexist with nature in the past?
Detailed Solution for Test: Our Environment - Question 21
In the past, early humans generally coexisted harmoniously with nature by adapting their surroundings to meet their needs. They relied on natural resources for sustenance and shelter, often working in harmony with the environment rather than exploiting it without limits. This symbiotic relationship allowed early humans to thrive while maintaining a balance with the natural world.
Test: Our Environment - Question 22
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How have science, technology, and industrialization impacted the relationship between humans and nature over time?
Detailed Solution for Test: Our Environment - Question 22
The advancements in science, technology, and industrialization have led to disruptions and imbalances in the relationship between humans and nature over time. Urbanization, overpopulation, and increased industrial activities have exerted significant pressure on the environment, resulting in habitat destruction, pollution, and loss of biodiversity. These changes highlight the need for sustainable practices and conservation efforts to mitigate the negative impacts of human activities on the natural world.
Test: Our Environment - Question 23
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What is a key aspect of sustainable development that involves ensuring the growth rate of the human population is carefully managed?
Detailed Solution for Test: Our Environment - Question 23
Managing population growth is crucial for sustainable development as it helps in balancing resource availability with the needs of the population. By controlling population growth, societies can better allocate resources, reduce strain on ecosystems, and enhance overall quality of life for individuals. Implementing measures such as family planning initiatives and education can help achieve a sustainable population growth rate.
Test: Our Environment - Question 24
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Which practice is essential for sustainable development and involves using energy sources that can be naturally replenished?
Detailed Solution for Test: Our Environment - Question 24
Utilizing renewable energy sources is a key aspect of sustainable development as it reduces reliance on finite resources like fossil fuels and minimizes environmental impacts such as greenhouse gas emissions. Renewable energy sources, including solar, wind, and hydroelectric power, offer clean and sustainable alternatives to traditional energy sources, contributing to a more environmentally friendly and resilient energy system.
Test: Our Environment - Question 25
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What is a crucial element of sustainable development that involves using resources wisely to meet present needs without compromising the ability of future generations to meet their own needs?
Detailed Solution for Test: Our Environment - Question 25
Prudent utilization of resources is fundamental to sustainable development as it promotes responsible consumption and ensures the longevity of natural resources. By adopting sustainable practices such as resource conservation, efficient resource management, and reducing waste generation, societies can maintain ecological balance, support economic development, and safeguard resources for future generations.
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