Ecosystems: Dive into the Interconnectedness of Living Organisms

Question 1

In a food chain, which type of organism is responsible for capturing energy from the sun or chemicals to produce food?

Accepted Answer

Producers

Answer

Consumers

Answer

Decomposers

Answer

Herbivores

Question 2

Within an ecosystem, which of these is an abiotic factor?

Accepted Answer

Sunlight

Answer

Plants

Answer

Animals

Answer

Bacteria

Question 3

In a forest ecosystem, which organism creates its own food using sunlight and water?

Accepted Answer

Tree

Answer

Deer

Answer

Mushroom

Answer

Fox

Question 4

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

Accepted Answer

Sunlight

Answer

Trees

Answer

Bacteria

Answer

Mushrooms

Question 5

What is an ecosystem?

Accepted Answer

All the living things in an area and the non-living things they interact with

Answer

A group of organisms that live together

Answer

The physical surroundings of an organism

Answer

The interactions between living organisms

Question 6

Which part of an ecosystem is non-living?

Accepted Answer

Rocks

Answer

Trees

Answer

Fungi

Answer

Animals

Question 7

Which organism in an ecosystem breaks down dead organisms and returns nutrients to the soil?

Accepted Answer

Mushroom

Answer

Grass

Answer

Rabbit

Answer

Hawk

Question 8

Which of the following factors does NOT influence the survival of organisms in an ecosystem?

Accepted Answer

Luck

Answer

Availability of resources

Answer

Climate

Answer

Interactions with other organisms

Question 9

Which example does NOT show an interaction between living and non-living things in an ecosystem?

Accepted Answer

Water flowing down a stream

Answer

A tree providing shade for deer

Answer

A bird building a nest in a tree

Answer

A flower attracting a bee with its nectar

Question 10

What is NOT a component of an ecosystem?

Accepted Answer

Gravity

Answer

Living organisms

Answer

Non-living factors

Answer

Energy flow

Question 11

Which of the following is NOT a component of a healthy ecosystem?

Accepted Answer

Pollution

Answer

Living organisms

Answer

Non-living factors

Answer

Decomposers

Question 12

Which of the following is not a component of an ecosystem?

Accepted Answer

Magnets

Answer

Living organisms

Answer

Non-living things

Answer

Decomposers

Question 13

In an ecosystem, when two organisms interact and both benefit from the relationship, what type of interaction is this called?

Accepted Answer

Mutualism

Answer

Commensalism

Answer

Parasitism

Answer

Competition

Question 14

Which of the following is NOT a living component of an ecosystem?

Accepted Answer

Abiotic factors

Answer

Producers

Answer

Consumers

Answer

Decomposers

Question 15

Which of the following is NOT a naturally occurring part of a healthy forest ecosystem?

Accepted Answer

Pesticide

Answer

Trees

Answer

Plants

Answer

Sunlight

Question 16

In an ecosystem, which of the following is a living organism?

Accepted Answer

A tree

Answer

Sunlight

Answer

The temperature

Answer

Water

Question 17

Which of the following is NOT a natural component of an ecosystem?

Accepted Answer

Human activities

Answer

Producers

Answer

Consumers

Answer

Decomposers

Question 18

Which of these is NOT a component of an ecosystem?

Accepted Answer

Gravity

Answer

Plants

Answer

Animals

Answer

Water

Question 19

Which of the following is a living organism in an ecosystem?

Accepted Answer

Plants

Answer

Water

Answer

Soil

Question 20

Which of the following is an abiotic factor in an ecosystem?

Accepted Answer

Water

Answer

Plants

Answer

Animals

Question 21

Which of these is NOT a living part of an ecosystem?

Accepted Answer

Sunlight

Answer

Plants

Answer

Animals

Question 22

Within an ecosystem, prey are organisms that:

Accepted Answer

are hunted and consumed by predators

Answer

compete with predators for resources

Answer

lack defenses against predators

Question 23

In a food web, what is the unique role of decomposers?

Accepted Answer

They decompose dead plants and animals, releasing nutrients back into the soil.

Answer

They create food for other animals to consume.

Answer

They hunt and consume other animals.

Answer

They offer shelter and protection to other organisms.

Question 24

What is an abiotic factor in an ecosystem?

Accepted Answer

Something that is not living

Answer

Something that is living

Answer

Both living and non-living things

Question 25

In an ecosystem, which type of symbiotic relationship benefits only one organism without affecting the other?

Accepted Answer

Commensalism

Answer

Mutualism

Answer

Parasitism

Question 26

In a food chain, which animal hunts and eats other animals?

Accepted Answer

Lion

Answer

Rabbit

Answer

Grass

Answer

Mushroom

Question 27

In an ecosystem, which of these is a living organism?

Accepted Answer

Plants

Answer

Sunlight

Answer

Water

Answer

Rocks

Question 28

Which of the following is NOT a living organism found within an ecosystem?

Accepted Answer

Sunlight

Answer

Plants

Answer

Animals

Answer

Bacteria

Question 29

In an ecosystem, competition occurs when organisms struggle for limited resources. What is a possible effect of competition?

Accepted Answer

Reduction in biodiversity as weaker organisms cannot survive

Answer

Increased cooperation among organisms

Answer

Unlimited availability of resources for all organisms

Question 30

Which element is NOT essential for a healthy ecosystem?

Accepted Answer

Pollution

Answer

Native species

Answer

Clean environment

Answer

Natural resources

Question 31

How do human actions harm ecosystems?

Accepted Answer

Destroying habitats, polluting the environment, and using resources excessively

Answer

Boosting biodiversity and enhancing air quality

Answer

Minimizing soil erosion and improving water quality

Question 32

Which of the following is not a natural component of an ecosystem?

Accepted Answer

Pollution

Answer

Living organisms

Answer

Non-living factors

Answer

Decomposers

Question 33

Within an ecosystem, living and non-living elements interact. Which of the following interactions involves only non-living components?

Accepted Answer

Sunlight breaking down rocks

Answer

A tree using sunlight for photosynthesis

Answer

A bird building a nest using twigs and leaves

Question 34

Which of the following is a non-living part of an ecosystem?

Accepted Answer

Water

Answer

Plants

Answer

Animals

Answer

Bacteria

Question 35

Which human activities can harm ecosystems?

Accepted Answer

Pollution, cutting down forests, overfishing, and climate change

Answer

Protecting natural habitats

Answer

Planting trees and native plants

Question 36

Which of the following is NOT a natural component of an ecosystem?

Accepted Answer

Plastic bottles

Answer

Living organisms

Answer

Sunlight

Answer

Temperature

Question 37

In a grassland ecosystem, how does energy flow through the ecosystem?

Accepted Answer

Grass → Grasshopper → Hawk → Decomposer

Answer

Hawk → Grasshopper → Grass → Decomposer

Answer

Decomposer → Grass → Grasshopper → Hawk

Question 38

In an ecosystem, living organisms (plants, animals, and microorganisms) depend on each other to survive. How are these organisms connected?

Accepted Answer

They rely on each other for food, shelter, and other resources, creating a network of interconnected relationships.

Answer

They compete for resources but don't rely on each other for survival.

Answer

They interact only with their own kind, forming separate groups.

Answer

They are completely independent and don't affect each other's survival.

Question 39

How does biodiversity enhance the stability and resilience of ecosystems?

Accepted Answer

Biodiversity provides a wider range of resources, reducing competition and increasing survival chances for species, ensuring ecosystem stability.

Accepted Answer

Biodiversity increases ecosystem resilience by allowing different species to adapt and respond to environmental changes.

Answer

Biodiversity contributes to clean air and water by supporting photosynthesis and nutrient cycling.

Answer

Biodiversity threatens ecosystems by increasing competition and resource depletion.

Question 40

How do decomposers contribute to nutrient cycling in an ecosystem?

Accepted Answer

Decomposers break down dead organisms, releasing nutrients back into the soil for producers to use.

Answer

Decomposers only consume living organisms and do not contribute to nutrient cycling.

Answer

Decomposers are only found in water and do not play a role in land ecosystems.

Answer

Decomposers make their own food and do not rely on other organisms for survival.

Question 41

Ecological succession is the gradual change in an ecosystem that leads to a stable community. What is the correct order of stages in ecological succession?

Accepted Answer

Pioneer species establish first, followed by intermediate species and finally climax species.

Answer

Climax species establish first, followed by pioneer species and then intermediate species.

Answer

Intermediate species establish first, followed by pioneer species and finally climax species.

Answer

Pioneer species, intermediate species, and climax species establish simultaneously.

Question 42

Which of the following accurately describes the difference between food chains and food webs?

Accepted Answer

Food chains are linear sequences of organisms through which energy flows, while food webs are complex, interconnected networks.

Answer

Both food chains and food webs typically have a single producer organism at their base.

Answer

Food chains always involve only two trophic levels, while food webs can have many.

Answer

Food webs are more simplified and less accurate representations of ecosystem interactions compared to food chains.

Question 43

What is the primary role of producers in an ecosystem?

Accepted Answer

Produce food through photosynthesis

Answer

Consume other organisms

Answer

Break down organic matter

Answer

Provide shelter for animals

Question 44

Which option is an example of a consumer in an ecosystem?

Accepted Answer

Rabbit

Answer

Grass

Answer

Mushroom

Answer

Bacteria

Question 45

The process by which decomposers break down organic matter is called?

Accepted Answer

Decomposition

Answer

Photosynthesis

Answer

Respiration

Answer

Fermentation

Question 46

Which type of ecosystem is characterized by tall trees that form a dense overhead layer?

Accepted Answer

Forest

Answer

Grassland

Answer

Desert

Answer

Tundra

Question 47

Which adaptation helps organisms survive in dry and hot desert conditions?

Accepted Answer

Storing water in specialized organs

Answer

Having thick fur for insulation

Answer

Migrating to warmer climates

Answer

Producing large amounts of offspring

Question 48

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

Accepted Answer

Trees

Answer

Sunlight

Answer

Temperature

Answer

Water

Question 49

What do we call the entire system of interactions between living things and their surroundings?

Accepted Answer

Ecosystem

Answer

Food chain

Answer

Habitat

Answer

Biome

Question 50

Which human activity is most likely to negatively affect ecosystems?

Accepted Answer

Pollution

Answer

Conservation

Answer

Renewable energy

Answer

Wildlife protection

Question 51

In an ecosystem, why are producers considered the foundation?

Accepted Answer

Producers provide food for all other living organisms.

Answer

Producers are the most common organisms in an ecosystem.

Answer

Producers help break down waste and recycle nutrients.

Answer

Producers regulate the climate and weather patterns.

Question 52

Some human activities can harm ecosystems. Which of the following is an example of a human activity that can disrupt the balance of an ecosystem?

Accepted Answer

Releasing harmful chemicals into the environment

Answer

Planting trees to create a forest

Answer

Recycling and reducing waste

Answer

Studying and observing wildlife without disturbing it

Question 53

Within an ecosystem, which interaction represents parasitism, where one organism gains while the other suffers?

Accepted Answer

A tick drawing blood from a deer

Answer

A fungus growing on a tree

Answer

A lion pursuing a zebra

Answer

A bee gathering nectar from a flower

Question 54

What is a potential consequence of biodiversity loss in an ecosystem?

Accepted Answer

Reduced ecosystem resilience

Answer

Increased ecosystem stability

Answer

Improved nutrient cycling

Answer

Enhanced population growth for all species

Question 55

What is ecological restoration, and what are its potential benefits and challenges?

Accepted Answer

Ecological restoration involves repairing damaged ecosystems to restore their natural balance and functions.

Accepted Answer

Ecological restoration can provide benefits such as increased biodiversity, improved water quality, and economic opportunities.

Answer

Ecological restoration only involves removing pollutants from an ecosystem.

Answer

Ecological restoration projects are always successful and face no setbacks.

Question 56

Keystone species play a crucial role in ecosystems. What is their function, and what happens if they disappear?

Accepted Answer

Keystone species have a large impact on their ecosystem despite their small numbers.

Accepted Answer

Removing keystone species can cause a chain reaction in the food web, leading to population declines or extinctions.

Answer

Keystone species are always the top predators in an ecosystem.

Answer

Losing keystone species can make ecosystems more stable by reducing competition.

Question 57

How do living (biotic) and non-living (abiotic) factors affect where and how many organisms live in an ecosystem?

Accepted Answer

Living factors control resources and competition, while non-living factors like temperature and water affect survival and reproduction.

Answer

Non-living factors control where organisms live, while living factors affect how many there are.

Answer

Living factors have no effect on where organisms live.

Answer

Non-living factors have no effect on how many organisms there are.

Question 58

How do adaptations help maintain the balance and stability of an ecosystem?

Accepted Answer

Adaptations allow organisms to fulfill specific roles, maintaining ecosystem balance.

Answer

Adaptations only benefit individual organisms.

Answer

Adaptations increase competition, disrupting ecosystem stability.

Answer

Adaptations have no impact on the ecosystem.

Question 59

What is the term for the maximum number of individuals of a species that an ecosystem can support indefinitely?

Accepted Answer

Carrying capacity

Answer

Population size

Answer

Sustainable population

Question 60

How does ecological succession contribute to the stability and resilience of ecosystems?

Accepted Answer

Ecological succession promotes stability by favoring adaptable species, increasing biodiversity, and fostering interconnected communities.

Answer

Ecological succession can destabilize ecosystems by introducing non-native species that outcompete native species.

Answer

Ecological succession only occurs in newly formed or disturbed ecosystems.

Answer

Ecological succession does not influence the stability or resilience of ecosystems.

Question 61

Which part of an ecosystem is NOT a living thing?

Accepted Answer

Abiotic factors

Answer

Producers

Answer

Consumers

Answer

Decomposers

Question 62

Which type of organism gets energy by eating other organisms?

Accepted Answer

Consumers

Answer

Producers

Answer

Decomposers

Answer

Predators

Question 63

Which type of ecosystem is full of trees and woody plants?

Accepted Answer

Forest

Answer

Grassland

Answer

Desert

Answer

Tundra

Question 64

What is the process called where dead plants and animals are broken down into smaller parts?

Accepted Answer

Decomposition

Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration