Pre/Post Assessment for Nature Unbound

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Name *

Which definition best describes ecology? *

1 分

Study of biology including cellular processes.

Study of ecologists including the work that they do.

Study of how nature works including both abiotic and biotic factors.

Study of populations including disease within populations.

Which statement best describes conservation's role in society? *

1 分

Conservation practices manage resources for the next generations to have and also use

Conservation educates the public about ways that they can help Missouri animals

Conservation educates landowners about the best way to manage ponds

Conservation practices allow for ecologists to study nature.

Ecologists work by: *

1 分

First developing a question and then setting up an experiment

First developing a question and then looking up the answers in credible sources

First developing a question and then creating a model

Both a and b

Both a and c

Which reproduction strategy does Mead's milkweed utilize? *

Mead's milkweed is an endangered species in Missouri. It is self-incompatible which means it produces seeds only when pollen from one plant reaches the flower of a different plant. Mead's milweed can also spread by sprouting stems from a long underground rhizome.

1 分

Asexual reproduction

Sexual reproduction

Both a and b

Unilateral reproduction

The greatest genetic diversity can be found in which colony of Mead's milkweed? *

1 分

A colony that is treated with pesticides

A colony that reproduces by seed and vegetative reproduction

A colony that is located in Missouri

A colony that reproduces only by vegetative reproduction

Which species would have the best chance of survival? *

1 分

A species that has a population of genetically similar individuals

A species that has a very small population

A species that has a population of genetically different individuals

A species that has a very large population

What keeps species' populations from exploding? Choose the best answer. *

1 分

Abiotic factors

Biotic factors

Limiting factors

Reproductive factors

Key measurements of a population that ecologists make are: *

1 分

Size, number of predators and carrying capacity

Size, density and carrying capacity

Size, density and dispersion

Size, carrying capacity and dispersion

What would happen, over time, if two species occupied the exact same niche? *

1 分

One would outcompete the other

One would kill the other

One would become dependent on the other

One would mate with the other

Imagine that the large mammalian predators have been eliminated in an area. What would be the impact to the ecosystem over time? Choose the best answer. *

1 分

Prey species would increase exponentially

The balance of the ecosystem would be restored

The balance of the ecosystem would be upset

Other species would not be impacted

Which combination of characteristics bests describes a species most likely to go extinct? *

1 分

Small population with a small home range

Large population with a large home range

Small population with a large home range

Large population with a small home range

Which of the following is the major factor causing extinction of a species? *

1 分

Hunting

Habitat destruction or fragmentation

Being hit by a car

Competition of a non-native species

Why are there usually fewer than five levels in an energy pyramid? *

1 分

Almost 90% of the energy in the first level is transferred to primary consumers

Six levels would be too many

Energy is lost and it is transferred to each trophic level, making less energy available at each higher trophic level

There are too many top level predators

Suppose muskrates living in a marsh are overharvested. How would the flow of energy be altered? Choose the best answer. *

1 分

Less dominant wetland plants would not survive.

The marsh would have greater diversity of herbivores.

Cattails would dominate the marsh.

Both a and c

Cycle(s) needed for plants to make amino acids and DNA. *

Check all that apply.

1 分

Water cycle

Nitrogen cycle

Carbon cycle

Phosphorus cycle

必填

Transpiration is a process in plants that is a part of this/these cycle. *

Check all that apply.

1 分

Water cycle

Nitrogen cycle

Carbon cycle

Phosphorus cycle

必填

Precipitation --> Runoff --> Percolation are all processes in this/these cycles. *

Check all that apply.

1 分

Water cycle

Nitrogen cycle

Carbon cycle

Phosphorus cycle

必填

A large amount of this element is stored as fossil fuels. *

Check all that apply.

1 分

Water cycle

Nitrogen cycle

Carbon cycle

Phosphorus cycle

必填

Which community is more stable? *

1 分

One with a large biodiversity

One with a small biodiversity

One with a large variety of plant species

One with a mall

A tornado cuts a path through the Mark Twain National Forest. The trees in the forest were leveled, creating large swaths of open areas. Which answer best describes the succession stages that would follow this occurrence? *

1 分

Small trees followed by perennal plants and woody vegetation, followed by larger trees followed by a forest.

Annual plants followed by perennial plants and woody vegetation, followed by small trees, followed by forest

Small trees followed by larger trees, followed by a forest

People move in and subdivide the area into housing tracts

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