Food Chains and Webs Flashcards

Questions and Answers

What travels through a food chain or web?

Energy

What is the ultimate energy source for all life on Earth?

The sun

Food chains start with what?

The primary energy source

The first organism in a food chain must always be what type of organism?

Autotrophs or primary producers Signup and view all the answers

Name 2 food-making processes.

Photosynthesis and chemosynthesis Signup and view all the answers

Where do chemosynthetic bacteria get their energy?

Chemicals in hydrothermal vents Signup and view all the answers

Define herbivore.

Eats only plants Signup and view all the answers

Herbivores are also called what?

Primary consumers Signup and view all the answers

What are some animals called that feed on herbivores?

Secondary consumers Signup and view all the answers

Secondary consumers are eaten by a larger what?

Predators Signup and view all the answers

What kind of consumers eat secondary consumers?

Tertiary consumers Signup and view all the answers

What is used to indicate the flow of energy in a food chain or food web?

The arrows Signup and view all the answers

What happens to the energy as we move from step to step in a chain or web?

Energy is lost at each step Signup and view all the answers

Define food web.

Network of food chains Signup and view all the answers

What is meant by trophic levels?

Position it holds in a food chain Signup and view all the answers

Define autotroph.

Organisms that make their own food from sunlight or deep-sea vents Signup and view all the answers

First trophic level consists of what kind of producers and what are they called?

Primary producers and autotrophs Signup and view all the answers

Name the second trophic level both names.

Primary consumers and herbivores Signup and view all the answers

Secondary consumers may be eating meat or that eat both plants and animals.

Carnivores or omnivores Signup and view all the answers

What is the third trophic level called?

Secondary consumers Signup and view all the answers

What is the fourth trophic level called?

Tertiary consumers Signup and view all the answers

At the fifth trophic level would be consumers that eat consumers.

Quaternary and tertiary Signup and view all the answers

Give an example of three detritivores.

Vultures, worms, and crabs, and they feed on dead things Signup and view all the answers

What organism feeds on dead plants and animals and helps recycle them?

Detritivores Signup and view all the answers

Both ____ act as decomposers.

Bacteria and fungi Signup and view all the answers

Can an organism fill up more than one trophic level?

True Signup and view all the answers

In food chains and webs what trophic level must you have more of than another?

More autotrophs than heterotrophs Signup and view all the answers

Each trophic level has how much less energy?

10 percent Signup and view all the answers

What may happen if a species goes extinct?

It would affect the food chain and have unpredictable consequences on the ecosystem Signup and view all the answers

What is a plant?

An autotroph and a primary producer Signup and view all the answers

Study Notes

Food Chain and Web Overview

Energy travels through food chains and webs.
The sun serves as the ultimate energy source for all life on Earth.

Food Chain Structure

Food chains begin with primary energy sources, typically autotrophs or primary producers.
The first trophic level consists of primary producers that convert sunlight or chemicals into energy.

Organism Categories

Autotrophs synthesize their own food via photosynthesis or chemosynthesis.
Herbivores, or primary consumers, exclusively eat plants.
Secondary consumers feed on herbivores and are also known as carnivores or omnivores.
Tertiary consumers consume secondary consumers.
Quaternary consumers consume tertiary consumers.
Detrivores (e.g., vultures, worms, crabs) feed on dead organic matter, assisting in recycling nutrients.

Energy Flow

Arrows in food chains or webs indicate energy flow.
Energy diminishes at each trophic level, with only 10% of energy transferred to the next level.
More autotrophs are needed than heterotrophs to maintain ecological balance.

Ecological Impact

A species' extinction can disrupt food chains, leading to unpredictable consequences in ecosystems.

Decomposers

Bacteria and fungi function as decomposers, recycling nutrients by breaking down dead plants and animals.

Trophic Level Dynamics

Each trophic level represents a certain position in a food chain.
Organisms may occupy multiple trophic levels; for example, a bear can be both a primary and secondary consumer.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers fundamental concepts related to food chains and webs, focusing on energy flow and the organisms involved. Test your understanding of autotrophs, primary producers, and the significance of the sun in ecology. Perfect for students looking to reinforce their knowledge in biology.

Food Chains and Webs Flashcards

Questions and Answers

What travels through a food chain or web?

What is the ultimate energy source for all life on Earth?

Food chains start with what?

The first organism in a food chain must always be what type of organism?

Name 2 food-making processes.

Where do chemosynthetic bacteria get their energy?

Define herbivore.

Herbivores are also called what?

What are some animals called that feed on herbivores?

Secondary consumers are eaten by a larger what?

What kind of consumers eat secondary consumers?

What is used to indicate the flow of energy in a food chain or food web?

What happens to the energy as we move from step to step in a chain or web?

Define food web.

What is meant by trophic levels?

Define autotroph.

First trophic level consists of what kind of producers and what are they called?

Name the second trophic level both names.

Secondary consumers may be ____ eating meat or ____ that eat both plants and animals.

What is the third trophic level called?

What is the fourth trophic level called?

At the fifth trophic level would be ____ consumers that eat ____ consumers.

Give an example of three detritivores.

What organism feeds on dead plants and animals and helps recycle them?

Both ____ act as decomposers.

Can an organism fill up more than one trophic level?

In food chains and webs what trophic level must you have more of than another?

Each trophic level has how much less energy?

What may happen if a species goes extinct?

What is a plant?

Study Notes

Food Chain and Web Overview

Food Chain Structure

Organism Categories

Energy Flow

Ecological Impact

Decomposers

Trophic Level Dynamics

Studying That Suits You

Description

More Quizzes Like This

Food Chains and Energy Flow Quiz

Trophic Levels and Food Chains

Gr 8 Natural Sciences Ch 1.2: Energy flow: Food chains and food webs

Food Chains and Webs Flashcards

Secondary consumers may be eating meat or that eat both plants and animals.

At the fifth trophic level would be consumers that eat consumers.