Science Vocabulary 6.LS4.1 Biodiversity and Keystone Species

Multiple Choice

Why is biodiversity important for human resources and ecosystem services?

• It helps maintain food, medicine, and clean water supplies, and supports climate stabilization and pollination.

• It only affects animal populations and does not impact humans.

• Biodiversity is not related to ecosystem services.

• It is important only for scientific research.

Multiple Choice

How might the removal of a keystone species affect the stability and functioning of an ecosystem?

• The removal of a keystone species can destabilize the ecosystem, leading to loss of biodiversity and altered species interactions.
• Removing a keystone species always improves biodiversity.
• Keystone species are not important for ecosystem stability.
• The removal of a keystone species has no impact on the ecosystem.

Multiple Choice

Which of the following best defines biodiversity?

• The number of different species of plants and animals in an area

• The ability of an ecosystem to return to a steady state after a disturbance

• The balance of biotic and abiotic factors in a stable ecosystem

• Resources that exist in the environment without human intervention

Multiple Choice

Explain the importance of recycling in conserving natural resources and maintaining environmental equilibrium.

• Recycling has no impact on energy consumption.
• Recycling contributes to environmental degradation.
• Recycling is crucial for conserving natural resources and maintaining environmental equilibrium by reducing the demand for raw materials, minimizing energy use, and decreasing pollution.
• Recycling increases the need for new materials.

Multiple Choice

How do biodiversity, ecosystem stability, and environmental equilibrium interact to maintain a healthy ecosystem?

• Biodiversity reduces stability, leading to environmental imbalance.
• Ecosystem stability decreases biodiversity, harming environmental health.
• Environmental equilibrium disrupts biodiversity, causing ecosystem instability.
• Biodiversity enhances stability, which supports environmental equilibrium, maintaining a healthy ecosystem.

Multiple Choice

Which of the following statements about natural resources is correct?

• They exist in the environment without human intervention

• They are always created by humans

• They cannot be recycled

• They do not benefit organisms

Multiple Choice

Which of the following best defines a species?

• A group of organisms with similar characteristics that are able to interbreed or exchange genetic material

• A group of organisms living in the same area

• A group of organisms that eat the same food

• A group of organisms with different characteristics

Multiple Choice

Explain how healthy, functioning ecosystems provide benefits to humans.

• Healthy ecosystems only provide aesthetic value with no practical benefits.
• Healthy ecosystems benefit humans by providing clean air and water, supporting food production, regulating climate, and offering recreational and medicinal resources.
• Ecosystems are primarily beneficial for wildlife and have little impact on human life.
• Healthy ecosystems are irrelevant to human health and well-being.

Multiple Choice

Which of the following statements about ecology is correct?

• Ecology is the study of how living things interact with each other and their environment

• Ecology is the study of chemical reactions

• Ecology is the study of planets and stars

• Ecology is the study of human anatomy

Multiple Choice

In a food chain, what is the primary source of energy?

• Carnivores

• Herbivores

• Decomposers

• The Sun

Multiple Choice

Why are keystone species important for biodiversity?

• They are the most numerous species in their ecosystems.

• They provide food for all other species.

• They help to maintain the structure and integrity of the ecosystem.

• They have no predators, ensuring their survival.

Multiple Choice

What could be a direct consequence of removing a top predator from an ecosystem?

• A decrease in the population of primary consumers.

• An increase in the diversity of plant species.

• A decrease in the overall biodiversity of the ecosystem.

• An increase in the population of herbivores, leading to overgrazing.

Multiple Choice

Which organisms in this food web have a predator-prey relationship with each other?

• Bush rat and seeds
• Wedge-tailed eagle and dingo
• Dingo and goanna
• Kangaroo and bush rat

Multiple Choice

What do we call the variety of life in an ecosystem?

• Producer
• Biology
• Biodiversity
• Keystone species

Multiple Choice

What role do sea otters play in their ecosystem?

• They consume sea stars

• They control the population of sea urchins

• They pollinate native cactus

• They feed on mussels

Multiple Choice

A species that does not belong in a balanced ecosystem, comes in, and changes it (usually for the worse).

• flagnship

• umbrella

• invasive

• predator

Multiple Select

Select all that apply: Which of the following can be considered natural resources?

• Water

• Plastic

• Air

• Coal

Multiple Choice

Compare and contrast the concepts of 'value' and 'ecosystem services' in the context of environmental science.

• Value is the same as ecosystem services.
• Ecosystem services only refer to monetary benefits.
• Value is determined solely by cultural significance.
• Value refers to the economic worth of natural resources, while ecosystem services are the benefits humans receive from ecosystems.

Multiple Choice

Which of the following best describes an economic resource?

• Something that has monetary value

• Something that is always a physical object

• Something that cannot be traded

• Something unrelated to money

Multiple Choice

Explain why food, medicine, and clean water are considered important human resources.

• Food, medicine, and clean water are important human resources because they are essential for survival, health, and well-being.
• Food, medicine, and clean water are primarily for recreational use.
• Food, medicine, and clean water are optional for a healthy lifestyle.
• Food, medicine, and clean water are only important for wealthy countries.

Multiple Choice

Which of the following are goals of climate stabilization?

• Stopping the Earth's climate from changing in dangerous ways

• Increasing the Earth's temperature rapidly

• Allowing unchecked pollution

• Ignoring greenhouse gas emissions

Multiple Choice

How might the removal of a keystone species affect the ecosystem and the services it provides to humans?

• The removal of a keystone species has no impact on the ecosystem.
• It can lead to an increase in biodiversity and ecosystem stability.
• The ecosystem will function better without the keystone species.
• The removal of a keystone species can destabilize the ecosystem, reduce biodiversity, and impair essential services it provides to humans.

Multiple Choice

Why is "A" less biodiverse than "B"?

• Image "A" is more biodiverse.

• Image "A" has many corn plants and this makes it have high "rich" biodiversity.

• Image "A" has a lot more plants than image "B"

• Even though "A" has a lot of corn plants they are all the same species and makes this a low "poor" biodiverse area.

Multiple Choice

One of the most endangered habitats in the world, as a result of human development, pollution and climate change is

• Freshwater systems
• desert ecosystems
• marine ecosystems
• none of the above

Multiple Choice

The aesthetic value of an ecosystem provides

• a supporting service.

• a regulating service.

• an intrinsic value.

• a cultural service.

Multiple Choice

Which human activity would be most destructive to the biodiversity of the biosphere?

• a. The burning of wood and coal in rural areas
• b. The release of species of freshwater trout in lakes
• c. The removal of plants from the food webs they support
• d. The removal of erosion barriers from forest boundaries

Multiple Choice

A coastal area that once supported a thriving fishing industry is overfished. The number of species found living in the marine ecosystem decreases. Which of these activities is most likely to increase the natural biodiversity in the area?

• Building artificial reefs and limiting fishing activity
• Introduction non-native species to fill unoccupied habitats and banning fishing
• Building artificial reefs and increasing fishing activity
• Eliminating non-native species and encouraging fishing for large predatory fish