Biomes, Succession and Biodiversity

Multiple Choice

What type of succession is shown going from figure A to figure B?

• primary succession
• eutrophication
• secondary succession
• intermediate

Multiple Choice

What is formed during primary succession that doesn't need to be formed during secondary succession?

• pioneer species
• soil
• climax community
• lichens

Multiple Choice

Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?

• A tornado
• A volcanic eruption
• A flood
• A drought

Multiple Choice

succession that occurs in an area with no soil

• ecological succession 
• primary succession 
• secondary succession
• pioneer speciles

Multiple Choice

succession that occurs in an area where soil is already present

• ecological succession 
• primary succession 
• secondary succession
• pioneer speciles

Multiple Choice

this type of succession occurs after a forest fire

• primary succession
• secondary succession
• both

Multiple Choice

If farmers use a controlled burn to prevent forest fires, what would most likely be the first plants to return?

• trees

• shrubs

• mosses

• grasses

Multiple Choice

Primary succession occurs in areas with:

• very little soil

• lots of soil

• no soil

• soil that has been disturbed

Multiple Choice

How do lichens contribute to primary succession?

• Lichens decompose organic matter from animals and plants
• Lichens begin to break down rock to form soil
• Lichens are nitrogen fixing bacteria
• Lichens convert carbohydrates into fossil fuels.

Multiple Choice

Natural disasters such as flooding and tornadoes are linked to ________________.

• primary
• secondary
• old field
• ecosystem

Multiple Choice

Why is biodiversity important to ecosystems?

• It helps populations adapt to ecological changes.

• It increases at each level of the food chain.

• It provides more abiotic factors for the ecosystem.

Multiple Choice

Biodiversity, aka biological diversity, usually refers to

• the same species in a general location

• the number of different species in a given area

• the number of animal species in a given area

• the number of plant species in a given area

Multiple Choice

Which statement best describes an example of low species diversity?

• A population of frogs has a wide variety of skin colors

• A marsh ecosystem is covered by a single species of cattail bulrushes

• A state park includes multiple forest, wetland, and freshwater ecosystems

Multiple Choice

Which level of biodiversity helps to prevent the negative effects of bottlenecks?

• Ecosystem diversity

• Genetic diversity

• Species diversity

Reorder

Put the levels of biodiversity in order from largest to smallest.

• Ecosystem Diversity

• Species Diversity

• Genetic Diversity

1

2

3

• 1
• 2
• 3

Multiple Choice

Which applies to this environmental problem:

Humans produce an excessive amount of artificial light which can interfere with natural cycles of light/dark in an environment and can confuse animals.

• Habitat Loss

• Invasive Species

• Pollution

• Population Growth

• Over-exploitation

Multiple Choice

An endangered species is

• One whose numbers are so small that it is at risk of extinction
  
• One whose not been spotted after many years.
• One whose numbers are abundant.

Multiple Choice

The major cause of extinction is ____________________.

• habitat fragmentation
• habitat destruction
• pollution
• poaching

Multiple Choice

What do we call it when an ecosystem is able to maintain its structure and be stable over time?

• It is dependable.
• It is sustainable.
• It is independent.
• It is adaptable.

Multiple Choice

How can humans best help an endangered species avoid extinction?

• they can feed the animals
• they can put the animals in a zoo
• they can protect the animal’s habitat
• they can take the animal to new habitats