Biodiversity (1)

the variety of life in the world or in a particular habitat or ecosystem

• biodiversity

• demography

• carrying capacity

• poaching

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a species at risk, but not yet endangered

• endangered

• exotic

• endemic

• threatened

Which of the following would be most effective in slowing the loss of biodiversity?

• creating large parks/preserves in biodiversity hotspots

• requiring every country to maintain a seed bank

The level of biodiversity that involves a variety of habits and communities is _____ diversity.

• ecosystem

• population

• genetic

• species

Biodiversity is important to keep an area (biome) healthy. In this example "Food Web A" is sustainable. Why is sustainability important for an ecosystem in "Food Web A".

• If one organism is removed the food web can still operate (work) with little or no negative effect.

• If an organism is removed the food web will collapse and will affect the environment.

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Which habitat exhibits the greatest biodiversity?

• A habitat with 15 different species with about 300 individuals each

• A habitat with 10 different species with about 75 individuals each

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Currently sharks are on a rapid decline due to overfishing. If sharks go extinct will this affect the biodiversity of the ocean?

• No, sharks are not important.
• No, sharks will only affect the seal populations.
• Yes, it will disrupt the entire food chain in the ocean.
• Yes, but only a little.

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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

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A plant nursery only grew one type of tomato. All of their tomatoes died from the same disease. What was most likely true of the tomato plant population?

• a. It had too little biodiversity
• b. It had a lot of resistance to disease
• c. It had a few plants that were resistant to disease
• d. It had too much genetic variation

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Which human activity would be most destructive to the biodiversity of the biosphere?

• a. The burning of wood and coal in rural areas
• b. The release of species of freshwater trout in lakes
• c. The removal of plants from the food webs they support
• d. The removal of erosion barriers from forest boundaries

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