Ecosystems

Question 1

What is an ecosystem?

Answer 1

An ecosystem is a community of living organisms interacting with their physical environment.

Question 2

True or False: A pond ecosystem is an example of a freshwater ecosystem.

Answer 2

True

Question 3

What are the main components of an ecosystem?

Answer 3

The main components are producers, consumers, and decomposers.

Question 4

Fill in the blank: The first level in a food chain consists of __________.

Answer 4

producers

Question 5

What role do decomposers play in an ecosystem?

Answer 5

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

Question 6

Multiple choice: Which of the following is a primary consumer? a) Grass b) Rabbit c) Fox

Answer 6

b) Rabbit

Question 7

What is a food chain?

Answer 7

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Question 8

True or False: Energy decreases as it moves up the levels in a food chain.

Answer 8

True

Question 9

What is a food web?

Answer 9

A food web is a complex network of interconnected food chains in an ecosystem.

Question 10

Fill in the blank: In a pond ecosystem, __________ are typically the primary producers.

Answer 10

aquatic plants

Question 11

Multiple choice: Which organism is at the top of the food chain in a pond ecosystem? a) Algae b) Fish c) Heron

Answer 11

c) Heron

Question 12

What happens to energy as it moves from one trophic level to the next?

Answer 12

Energy is lost as heat and through metabolic processes, usually about 90% is lost.

Question 13

True or False: Omnivores can occupy multiple trophic levels.

Answer 13

True

Question 14

What is biodiversity?

Answer 14

Biodiversity refers to the variety of life in a particular habitat or ecosystem.

Question 15

Fill in the blank: __________ are organisms that make their own food through photosynthesis.

Answer 15

Producers

Question 16

Multiple choice: In a food chain, which organism would be considered a secondary consumer? a) Grasshopper b) Frog c) Sun

Answer 16

b) Frog

Question 17

What is a trophic level?

Answer 17

A trophic level is a position in a food chain or food web that indicates the flow of energy and nutrients.

Question 18

True or False: All food chains start with a consumer.

Answer 18

False

Question 19

What type of organism is a herbivore?

Answer 19

A herbivore is an organism that primarily eats plants.

Question 20

Fill in the blank: The process by which plants convert sunlight into energy is called __________.

Answer 20

photosynthesis

Question 21

Multiple choice: What is the main source of energy for most ecosystems? a) The moon b) The sun c) Water

Answer 21

b) The sun

Question 22

True or False: Energy can be recycled in an ecosystem.

Answer 22

False

Question 23

What is the significance of a food web compared to a food chain?

Answer 23

A food web provides a more comprehensive view of how energy and nutrients flow through an ecosystem.

Question 24

Fill in the blank: __________ are organisms that eat both plants and animals.

Answer 24

Omnivores

Question 25

Multiple choice: Which of the following is not a producer? a) Seaweed b) Duckweed c) Fish

Answer 25

c) Fish

Question 26

What are abiotic factors?

Answer 26

Abiotic factors are the non-living components of an ecosystem, such as temperature, water, sunlight, soil, and air.

Question 27

True or False: Biotic factors include all living organisms in an ecosystem.

Answer 27

True

Question 28

Fill in the blank: The interaction between abiotic and biotic factors is crucial for _____ in ecosystems.

Answer 28

sustainability

Question 29

Which of the following is NOT an abiotic factor? A) Temperature B) Plants C) Soil D) Water

Answer 29

B) Plants

Question 30

Name two examples of biotic factors.

Answer 30

Examples of biotic factors include animals and plants.