Ecosystems and Biomes: Interactive Learning Quizzes for Year 7 Geography

Question 1

What is the maximum number of individuals of a species that an environment can support with the available resources?

Accepted Answer

Carrying capacity

Answer

Biodiversity

Answer

Population growth rate

Question 2

What is the process called when the types of living things in an ecosystem change over time?

Accepted Answer

Ecological Succession

Answer

Primary Succession

Answer

Secondary Succession

Answer

Climatic Succession

Question 3

How do human actions impact ecosystems and the benefits they provide to us? Give clear examples to support your answer.

Accepted Answer

Human activities, like pollution and deforestation, can harm ecosystems and the services they offer, such as clean air and water. However, efforts to protect and restore ecosystems can have positive effects.

Answer

Human activities only have positive effects on ecosystems, like providing us with food and shelter.

Answer

Ecosystems and the services they offer are not affected by human actions.

Answer

Ecosystem services are solely determined by natural processes, not influenced by human activities.

Question 4

How does biodiversity contribute to ecosystem stability? Explain how a decline in biodiversity can disrupt the balance and potentially harm an ecosystem.

Accepted Answer

A reduction in biodiversity can disrupt food webs, leading to population imbalances and a decrease in ecosystem resilience.

Answer

Biodiversity and ecosystem stability are inversely related, meaning as biodiversity increases, ecosystem stability decreases.

Answer

Ecosystem stability is solely dependent on abiotic factors such as temperature, precipitation, and soil conditions.

Answer

Ecosystem stability is unaffected by changes in biodiversity, as long as the dominant species remain present.

Question 5

Climate change can have significant impacts on ecosystems. How can climate change affect ecosystem structure, function, and the distribution of organisms?

Accepted Answer

Climate change can lead to changes in ecosystem structure, function, and the distribution of organisms.

Answer

Climate change has no major impacts on ecosystems.

Answer

Climate change mainly affects the distribution of organisms, with minimal impact on ecosystem structure and function.

Question 6

How do decomposers help recycle nutrients in an ecosystem? What would happen if decomposers disappeared?

Accepted Answer

Decomposers break down dead plants and animals, releasing nutrients back into the soil for plants to use.

Answer

Decomposers create new homes for other organisms.

Answer

Decomposers are the main consumers in an ecosystem.

Question 7

Which human activity does NOT contribute to climate change?

Accepted Answer

Planting trees

Answer

Deforestation

Answer

Burning fossil fuels

Answer

Driving cars

Question 8

How do nitrogen-fixing bacteria contribute to plant growth and ecosystem health?

Accepted Answer

They convert atmospheric nitrogen into a form usable by plants, boosting plant growth and primary production.

Answer

They enhance the nutritional value of plants, primarily benefiting herbivores.

Answer

They decompose organic matter, recycling nutrients in the ecosystem.

Answer

They compete with plants for nitrogen, hindering plant growth and ecosystem productivity.

Question 9

How do ecological niches contribute to the coexistence of different species within an ecosystem?

Accepted Answer

Ecological niches allow species to have different roles and use different resources, reducing competition.

Answer

Ecological niches are only found in forests.

Answer

Ecological niches are not essential for species coexistence.

Answer

Ecological niches are solely determined by the physical environment.

Question 10

How do abiotic factors like temperature, water, and sunlight affect where organisms live in an ecosystem? Give examples.

Accepted Answer

Temperature, water, and sunlight can affect where organisms live by helping them survive, reproduce, and compete for resources.

Answer

Abiotic factors don't affect where organisms live.

Answer

Abiotic factors only affect where plants live.

Question 11

How do human activities like farming, building towns, and constructing factories affect animals and plants by altering their habitats?

Accepted Answer

Fragmenting habitats, making it harder for animals and plants to move and access resources.

Answer

Creating new and diverse habitats, providing more options for animals and plants.

Answer

Having minimal impact on habitats and the distribution of plants and animals.

Question 12

What is the key difference between primary and secondary succession in terms of their starting conditions and environments?

Accepted Answer

Primary succession occurs in areas with no existing plant life, while secondary succession occurs in areas with some plant life.

Answer

Primary succession is caused by human activities, while secondary succession is caused by natural events.

Answer

Primary succession is a slow process, while secondary succession is a fast process.

Question 13

What is the primary factor influencing the distribution of different biomes on Earth?

Accepted Answer

Temperature and rainfall

Answer

Soil type and altitude

Answer

Animal and plant species

Answer

Human activities

Question 14

Which organism in an ecosystem is a primary producer?

Accepted Answer

Grass

Answer

Lion

Answer

Rabbit

Answer

Fungus

Question 15

What is the primary role of decomposers in an ecosystem?

Accepted Answer

Breaking down and recycling nutrients from dead organisms

Answer

Producing food for other organisms

Answer

Regulating environmental temperature

Answer

Providing shelter for animals

Question 16

What is the main difference between a food chain and a food web?

Accepted Answer

A food chain follows one path of energy transfer, while a food web shows multiple pathways.

Answer

A food chain includes all organisms in an ecosystem, while a food web only includes a few.

Answer

A food chain is a straight line, while a food web is a circle.

Answer

There is no difference between a food chain and a food web.

Question 17

Which of these organisms is a producer in an ecosystem?

Accepted Answer

Grass

Answer

Lion

Answer

Bacteria

Answer

Mushroom

Question 18

What is the process by which animals get energy from consuming plants called?

Accepted Answer

Herbivory

Answer

Photosynthesis

Answer

Decomposition

Answer

Commensalism

Question 19

What is the main job of decomposers in an ecosystem?

Accepted Answer

Break down organic matter

Answer

Generate oxygen

Answer

Filter nutrients

Answer

Control populations

Question 20

An ecosystem is a community of living organisms interacting with each other and with their physical surroundings. Which of the following is an example of an ecosystem?

Accepted Answer

A forest

Answer

A car

Answer

A computer

Answer

A book

Question 21

The term used to describe the physical factors in an ecosystem, such as temperature, sunlight, and water availability, is:

Accepted Answer

Abiotic factors

Answer

Biotic factors

Answer

Ecological factors

Answer

Anthropogenic factors

Question 22

Biomes are large-scale ecosystems with distinctive climates, vegetation, and animal communities. Which of the following is NOT a characteristic of a biome?

Accepted Answer

Highly variable conditions

Answer

Distinctive climate

Answer

Specific vegetation

Answer

Unique animal species

Question 23

A symbiotic relationship where both species benefit is called:

Accepted Answer

Mutualism

Answer

Predation

Answer

Parasitism

Answer

Competition

Question 24

The process by which plants use carbon dioxide and sunlight to produce food is known as:

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Fermentation

Question 25

Which of the following human activities can have a negative impact on ecosystems?

Accepted Answer

Deforestation

Answer

Sustainable farming

Answer

Conservation efforts

Answer

Wildlife protection

Question 26

The term used to describe the variety of life on Earth, including all living organisms and their interactions, is:

Accepted Answer

Biodiversity

Answer

Ecosystem services

Answer

Ecological footprint

Answer

Carrying capacity

Question 27

Which biome is often very cold, with permafrost and low precipitation?

Accepted Answer

Tundra

Answer

Tropical rainforest

Answer

Savanna

Answer

Temperate deciduous forest

Question 28

The relationship between a fox and a rabbit is an example of which ecological interaction?

Accepted Answer

Predation

Answer

Mutualism

Answer

Commensalism

Answer

Parasitism

Question 29

Which of the following is NOT a method used to study ecosystems?

Accepted Answer

Talking to people

Answer

Watching and recording observations

Answer

Collecting data

Answer

Creating computer simulations

Question 30

Which of the following is an organism that makes its own food through photosynthesis?

Accepted Answer

Grass

Answer

Mouse

Answer

Hawk

Answer

Mushroom

Question 31

Which of the following is **not** a characteristic of an ecosystem?

Accepted Answer

Is only found in a single location.

Answer

Contains living organisms.

Answer

Includes interactions between organisms.

Answer

Has a set physical and chemical environment.

Question 32

Which of the following is a type of biome commonly found in the United Kingdom?

Accepted Answer

Temperate grassland

Answer

Tropical rainforest

Answer

Tundra

Answer

Desert

Question 33

Which of the following is an example of a producer organism?

Accepted Answer

Grass

Answer

Rabbit

Answer

Fox

Answer

Bacteria

Question 34

Which of the following is a food chain that could be found in a temperate grassland ecosystem?

Accepted Answer

Grass -> Rabbit -> Fox

Answer

Tree -> Bird -> Snake

Answer

Algae -> Fish -> Shark

Answer

Coral -> Shrimp -> Turtle

Question 35

Which of the following is a defining feature of an ecosystem?

Accepted Answer

Living organisms interact with each other and their environment.

Answer

The system is isolated from external influences.

Answer

Energy does not flow through the system.

Answer

Change is not a constant factor in ecosystems.

Question 36

What is the term used to describe the living component of an ecosystem?

Accepted Answer

Biotic community

Answer

Biome

Answer

Habitat

Answer

Biosphere

Question 37

Which of these options is an example of an abiotic factor in an ecosystem?

Accepted Answer

Temperature

Answer

Plants

Answer

Animals

Answer

Bacteria

Question 38

What is the process whereby plants use sunlight to create their own food called?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Nitrogen fixation

Question 39

Which biome is characterized by extremely hot and dry conditions, with sparse vegetation?

Accepted Answer

Desert

Answer

Tropical rainforest

Answer

Grassland

Answer

Temperate forest

Question 40

What is the term for the transfer of energy through the different levels of an ecosystem?

Accepted Answer

Energy flow

Answer

Food web

Answer

Biodiversity

Answer

Nutrient cycling

Question 41

Which of the following is a benefit of high biodiversity in an ecosystem?

Accepted Answer

Increases ecosystem resilience.

Answer

Reduces competition between species.

Answer

Lowers overall productivity.

Answer

Simplifies food webs.

Question 42

In a marine ecosystem, which organism is considered the primary producer?

Accepted Answer

Phytoplankton

Answer

Fish

Answer

Zooplankton

Answer

Coral

Question 43

What is the primary role of decomposers within an ecosystem?

Accepted Answer

To break down dead organisms and recycle nutrients.

Answer

To produce food for other organisms.

Answer

To regulate populations of organisms.

Answer

To maintain soil fertility.

Question 44

Which biome covers the largest area on Earth?

Accepted Answer

Ocean

Answer

Forest

Answer

Grassland

Answer

Tundra

Question 45

What is the term for the way living things in an ecosystem interact with each other?

Accepted Answer

Interdependence

Answer

Symbiosis

Answer

Competition

Answer

Adaptation

Question 46

In a forest, which animal is an example of a primary consumer?

Accepted Answer

Deer

Answer

Fox

Answer

Squirrel

Answer

Hawk

Question 47

What is the role of decomposers in an ecosystem?

Accepted Answer

They break down dead organisms.

Answer

They produce food for primary consumers.

Answer

They provide shelter for animals.

Answer

They regulate the temperature.

Question 48

What do we call the variety of living organisms in an ecosystem?

Accepted Answer

Community

Answer

Population

Answer

Biosphere

Answer

Species

Question 49

What is the process by which plants use sunlight, water and carbon dioxide to make food?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Symbiosis

Question 50

Which biome is characterized by moderate temperatures, abundant rainfall, and deciduous trees?

Accepted Answer

Temperate Forest

Answer

Desert

Answer

Tropical Rainforest

Answer

Tundra

Question 51

What is the scientific term for a mutually beneficial relationship between two species?

Accepted Answer

Symbiosis

Answer

Competition

Answer

Predation

Answer

Parasitism

Question 52

Which organism is a primary producer in an ecosystem?

Accepted Answer

Grass

Answer

Rabbit

Answer

Fox

Answer

Snake

Question 53

What is the primary function of decomposers in an ecosystem?

Accepted Answer

To decompose organic matter and recycle nutrients

Answer

To capture sunlight and convert it into energy

Answer

To consume and break down other organisms

Answer

To regulate population size

Question 54

Which environmental factor has the greatest influence on the distribution of plants in a forest?

Accepted Answer

Sunlight availability

Answer

Human interference

Answer

Temperature range

Answer

Soil moisture

Question 55

What is the term for a community of living organisms interacting with their physical environment?

Accepted Answer

Ecosystem

Answer

Biome

Answer

Habitat

Answer

Population

Question 56

Which of the following is a renewable resource?

Accepted Answer

Water

Answer

Fossil fuels

Answer

Minerals

Answer

Metals

Question 57

Which is the largest terrestrial biome on Earth?

Accepted Answer

Forest

Answer

Tundra

Answer

Grassland

Answer

Desert

Question 58

What is the primary role of decomposers in an ecosystem?

Accepted Answer

Breaking down dead organisms

Answer

Producing food for other organisms

Answer

Providing shelter for animals

Answer

Controlling the population of other organisms

Question 59

Which of the following is an example of a biotic factor in an ecosystem?

Accepted Answer

Plants and animals

Answer

Sunlight

Answer

Temperature

Answer

Wind

Question 60

What is the process by which plants utilize sunlight, water, and carbon dioxide to produce their own food?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Nutrient cycling

Question 61

What term describes the relationship between two organisms where one benefits while the other is unaffected?

Accepted Answer

Commensalism

Answer

Mutualism

Answer

Parasitism

Answer

Competition

Question 62

A biome is a large ecological community defined by:

Accepted Answer

Similar climate and vegetation

Answer

Distinct geographical location

Answer

Presence of specific animal species

Answer

Uniform soil composition

Question 63

Producers in an ecosystem are organisms that primarily:

Accepted Answer

Produce their own food using sunlight or chemicals

Answer

Consume other organisms

Answer

Decompose organic matter

Answer

Filter nutrients from the environment

Question 64

The process by which organic matter is broken down into simpler substances is:

Accepted Answer

Decomposition

Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration