B7- Food Chains

Question 1

What is the starting point of a food chain?

Answer 1

Producers

Producers make their own food using energy from the Sun.

Question 2

What do producers typically use to make glucose?

Answer 2

Energy from the Sun

Producers are usually green plants or algae.

Question 3

What process do plants use to produce glucose?

Answer 3

Photosynthesis

This process converts sunlight into chemical energy.

Question 4

What are biological molecules produced by plants known as?

Answer 4

Biomass

Biomass is the mass of living material and can be thought of as energy stored in a plant.

Question 5

What is energy transferred through in an ecosystem?

Answer 5

Living organisms

Energy is transferred when organisms eat other organisms.

Question 6

Who eats producers in a food chain?

Answer 6

Primary consumers

Primary consumers are the first consumers in a food chain.

Question 7

What is the order of consumers in a food chain?

Answer 7

Producers, Primary consumers, Secondary consumers, Tertiary consumers

Each level represents a different stage in the food chain.

Question 8

What term describes organisms that eat other organisms?

Answer 8

Consumers

Consumers can be classified as primary, secondary, or tertiary.

Question 9

What are consumers that hunt and kill other animals called?

Answer 9

Predators

Their prey are the animals they eat.

Question 10

What is the relationship between prey and predator populations in a stable community?

Answer 10

They go in cycles

An increase in prey leads to an increase in predators, and vice versa.

Question 11

How does food availability affect species populations?

Answer 11

Limits their population

The population of any species is usually limited by the amount of food available.

Question 12

What happens to predator populations when prey populations increase?

Answer 12

Predator populations also increase

This pattern continues until the prey population decreases.

Question 13

What is the effect of an increase in predator populations on prey?

Answer 13

Prey populations decrease

This leads to fewer resources for predators over time.

Question 14

What is the term for the cycles of predator and prey populations?

Answer 14

Predator-prey cycles

These cycles are always out of phase with each other.

Question 15

Fill in the blank: Primary consumers are the _______ consumers in a food chain.

Answer 15

first

Question 16

True or False: The number of predators increases immediately when prey populations increase.

Answer 16

False

There is a time lag as predators need time to reproduce.

Question 17

What happens to the population of foxes when the number of rabbits decreases?

Answer 17

Fewer foxes

This is due to the decrease in available food.