Question 1

How does flooding affect the ecosystem in terms of species distribution?

Accepted Answer

Without this seasonal flooding, fruit-eating fish cannot swim into the forest.

Answer

Flooding has no effect on tree populations.

Answer

Trees' seeds are not affected by flooding.

Answer

Some tree populations only produce leaves during these months.

Question 2

How does fire benefit certain grass species in the ecosystem?

Accepted Answer

Grasses could be available for grazing animals shortly after a fire.

Answer

Fire prevents grass from being eaten by predators.

Answer

Fire discourages grazing by large animals.

Answer

Fire allows trees to grow.

Question 3

What is one way that loss of top predators might affect energy transfer in an ecosystem?

Accepted Answer

Loss of top predators could increase the amount of small plants in an ecosystem.

Answer

Loss of small animals could cause a decrease in small plants.

Answer

Loss of top predators could cause a decrease in small plants.

Answer

Loss of small animals could increase the energy available.

Question 4

What impact would the loss of bees have on energy transfer in an ecosystem?

Accepted Answer

Less energy is available for animals that eat plants.

Answer

Small fish populations decrease, decreasing the energy available for larger fish.

Answer

Topsoil is low in nutrients, decreasing energy available for small animals.

Answer

Plants have less topsoil available, reducing energy for herbivores.

Question 5

How do tree roots contribute to ecosystem stability?

Accepted Answer

Tree roots add slope stability.

Answer

Tree roots do not affect ecosystem stability.

Answer

Tree roots provide food for animals.

Answer

Tree roots help trees absorb sunlight.

Question 6

What role do microbes play in an ecosystem regarding energy transfer?

Accepted Answer

Microbes return nutrients to soil.

Answer

Microbes compete with plants for nutrients.

Answer

Microbes reduce energy available for animals.

Answer

Microbes do not affect energy transfer.

Question 7

What effect do wetlands have on energy transfer in an ecosystem?

Accepted Answer

Wetlands filter water entering the ocean.

Answer

Wetlands have no impact on energy transfer.

Answer

Wetlands decrease plant growth.

Answer

Wetlands provide more energy for herbivores.

Question 8

What effect does deforestation have on the number of species in the Amazon rainforest?

Accepted Answer

High levels of deforestation cause the number of species present to decrease.

Answer

As deforestation increases, resources also increase.

Answer

Deforestation increases the number of species present.

Answer

Trees are removed due to high species numbers.

Question 9

What is the process called where an ecosystem gradually changes and evolves over time?

Accepted Answer

ecological succession

Answer

biological evolution

Answer

habitat fragmentation

Answer

environmental adaptation

Question 10

Which type of ecological succession begins on bare rock?

Accepted Answer

primary succession

Answer

tertiary succession

Answer

secondary succession

Answer

climatic succession

Question 11

What is the main difference between primary and secondary succession?

Accepted Answer

Primary succession starts without soil&#44; while secondary succession starts with soil.

Answer

Secondary succession only occurs in aquatic environments.

Answer

Primary succession occurs faster than secondary succession.

Answer

They are the same process.

Question 12

What type of organism is usually the first to colonize a barren environment during primary succession?

Accepted Answer

lichen

Answer

grasses

Answer

oak trees

Answer

deer

Question 13

In ecological succession, what term describes species that arrive and adapt to an area after disturbances?

Accepted Answer

pioneer species

Answer

keystone species

Answer

climax species

Answer

invasive species

Question 14

What is a climax community in the context of ecological succession?

Accepted Answer

The final stage of succession

Answer

A temporary habitat

Answer

The initial stage of succession

Answer

A community that is highly disturbed

Question 15

Which event can trigger secondary succession in an ecosystem?

Accepted Answer

a forest fire

Answer

volcanic eruption

Answer

glacial retreat

Answer

formation of a new island

Question 16

What role do fungi play in the process of ecological succession?

Accepted Answer

They help decompose organic material and contribute to soil formation.

Answer

They compete with plants for sunlight.

Answer

They primarily act as predators.

Answer

They only grow in aquatic environments.

Question 17

Which of the following is an example of primary succession?

Accepted Answer

The growth of vegetation on a newly formed volcanic island

Answer

Recovery of a forest after a wildfire

Answer

Recolonization of an area after flooding

Answer

Regrowth of grass after a lawn is mowed

Question 18

What is the main factor that determines the route and speed of ecological succession?

Accepted Answer

The type of disturbance and existing species

Answer

Climate changes

Answer

Geographical location

Answer

Animal migration patterns

Question 19

What is a common effect of food web disruptions?

Accepted Answer

Loss of biodiversity

Answer

Increase in population of all species

Answer

Higher growth rates of plants

Answer

Decreased predator populations only

Question 20

What can cause a disruption in a food web?

Accepted Answer

An introduction of an invasive species

Answer

Improved agricultural practices

Answer

Decrease in human population

Answer

Stable weather patterns

Question 21

How can overfishing impact a food web?

Accepted Answer

It can decrease fish populations, affecting their predators

Answer

It increases the number of fish

Answer

It only affects land animals

Answer

It has no effect on the food web

Question 22

What role do predators play in maintaining the balance of a food web?

Accepted Answer

They help control the populations of prey species

Answer

They increase the population of all species

Answer

They are the main source of nutrients

Answer

They produce energy for the ecosystem

Question 23

What impact does pollution have on food webs?

Accepted Answer

It can contaminate water sources affecting all species

Answer

It increases the number of producers

Answer

It only affects large animals

Answer

It has no impact on food webs

Question 24

How does climate change disrupt food webs?

Accepted Answer

By altering habitats and migration patterns

Answer

By reducing the need for predators

Answer

By creating stable weather patterns

Answer

By increasing the population of all species

Question 25

What is an effect of deforestation on food webs?

Accepted Answer

Loss of habitat for many species

Answer

More biodiversity

Answer

Increase in animal populations

Answer

Improved soil quality

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