Types of Species Quiz

What does it mean when an animal is endangered?

• Something once lived but no longer exists.
• Animals that is at risk of extinction.
• Place that protects animals at risk.

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What does it mean when an animal is extinct?

• Something once lived but no longer exists.
• Animals that is at risk of extinction.
• Place that protects animals at risk.

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A species is defined as endangered when it

• suffers from damage to its habitat.

• suffers from disease or predation.

• when there are hazards to the continued life of the species.

• all of the above

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Presently, the biggest threat to biodiversity is;

• Asteriod strikes, such as what happened 65 million years ago and resulted in the extinction of the dinosaurs.

• Human population growth, because as population increases, so does the number of plants and animals it consumes, resulting in a decrease of those organisms.

• Habitat destruction, such as cutting down portions of tropical rain forest, which destroys the niches occupied by tropical organisms.

• The proliferation of zoos and botanical gardens, causing causing people to care less about preserving species in the wild because they are being cared for those in sanctuaries.

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What is a keystone species?

• A species that is the most abundant in an ecosystem

• A species that has a crucial role in the way an ecosystem functions

• A species that is the largest in an ecosystem

• A species that is the smallest in an ecosystem

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What can happen to an ecosystem without keystone species?

• The ecosystem would remain the same

• The ecosystem would become more diverse

• The ecosystem would be dramatically different or cease to exist

• The ecosystem would have more predators

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What is often a characteristic of a keystone species?

• They are usually herbivores

• They are often predators

• They are always the largest animals

• They are always the smallest animals

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

• keystone

• invasive

• engineer

• predator

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Why are bees considered a keystone species?

• The honey they make supports the bear population

• They pollinate flowers that produce fruit which supports the ecosystem

• They sting when threatened

• They live in hives

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Why are some sharks considered a keystone species?

• Because they are a top predator

• They scare off smaller fish that may overgraze an area of sea grass

• They are tertiary consumers

• They are cartilaginous

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