G8 Biology - Food chain and webs

All energy on Earth ultimately comes from what source?

• Water

• Sun

• Consumers

• Oxygen

Answer explanation

All energy on Earth ultimately comes from the Sun, which provides the necessary light and heat for photosynthesis and drives weather patterns, making it the primary source of energy for all life forms.

Tags

NGSS.MS-ESS2-1

What are plants called in a food chain?

• Producers/ Autotrophs

• Consumers/ Heterotrophs

• Decomposers

• Scavengers

Answer explanation

In a food chain, plants are called producers or autotrophs because they produce their own food through photosynthesis, forming the base of the food chain.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

What are animals called in a food chain?

• Producers/ Autotrophs

• Consumers/ Heterotrophs

• Decomposers

• Plants

Answer explanation

In a food chain, animals are classified as Consumers or Heterotrophs because they obtain energy by eating other organisms, unlike Producers (plants) that create their own food.

What are the organisms that break down dead stuff?

• Producers

• Consumers

• Decomposers

• Organisms

Answer explanation

Decomposers are organisms that break down dead organic material, recycling nutrients back into the ecosystem. They play a crucial role in decomposition, unlike producers and consumers, which have different functions in the food chain.

Tags

NGSS.MS-LS2-4

Click on the image to make it larger-- The hawk gets energy from all of the following EXCEPT...

• mouse

• rabbit

• wildflowers

• snake

Answer explanation

The hawk derives energy from hunting animals like mice, rabbits, and snakes. Wildflowers, however, do not provide energy for hawks as they are not a food source for them.

Tags

NGSS.MS-LS2-3

A ____________________ shows how energy is passed from one living thing to another...

• ecosystem

• food chain

• habitat

Answer explanation

A food chain illustrates how energy flows from one organism to another, showing the direct feeding relationships in an ecosystem. It is the correct choice as it specifically describes energy transfer, unlike ecosystem or habitat.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

A ____________________ shows the competition in food chains

• Environment

• Food Web

• Ecosystems

Answer explanation

A Food Web illustrates the complex interactions and competition among various organisms in food chains, showing how energy and nutrients flow through an ecosystem. It is more comprehensive than a simple food chain.

The largest group of organisms found in a food web would be:

• Primary Consumers

• Producers

• Decomposers

• Tertiary Consumers

Answer explanation

Producers, such as plants, form the base of the food web and are the largest group of organisms. They convert sunlight into energy, supporting all other levels, including primary consumers, decomposers, and tertiary consumers.

Why might an organism have more than one arrow coming from them in a food web?

• More than one organism may eat them.

• They may eat more than one other organism.

• This organism gets its energy from multiple sources.

Answer explanation

An organism may have more than one arrow coming from it in a food web because more than one organism may eat them. This indicates that they are a food source for multiple predators.

Tags

NGSS.MS-LS2-2

Which organism recieves the least amount of energy from the producer?

• Owl

• Grasshopper

• Lilypad

• Mouse

Answer explanation

The owl, being a higher-level consumer, receives the least energy from producers like lilypads. Energy transfer decreases at each trophic level, so the owl gets less energy compared to the grasshopper and mouse.

Tags

NGSS.MS-LS2-3