Biodiversity and Resistance to Change

What does biodiversity mean?

• Only one species in an area.
• The different amount of species in an area
• All abiotic life
• Nitrogen fixation

Higher biodiversity means the ecosystem has _____________ species of organisms.

• more

• less

• one

• no

The variety of living things in an area is referred to as

• genes

• biodiversity

• abiotic

• natural selection

Is it better for ecosystems to have more biodiversity or less biodiversity?

• more

• Less

Why is biodiversity important to an ecosystem?

• It allows animals to feed permanently from one type of plant.

• It helps populations adapt to ecological changes.

• It increases at each level of the food chain

• It allows for the easy extinction of a species

Image "B" shows more biodiversity than image "A". Why?

• Because "B" shows more different species than image "A"

• Because image "B" has less different species than "A"

• "A" has a greater number of same species plants so this statement is wrong.

• Both images show the same biodiversity

Shark populations are decreasing 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.

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

The mountain chorus frog is an endangered species in Maryland.  In addition to the loss of habitat, what most likely caused this  frog  population to decline?

• an increase in food source
• more frog breeding grounds
• native wetlands preservation
• poisons dissovled in the water

Which of the following has the greatest biodiversity of species on Earth?

• tropical rainforest

• deserts

• tundra

• deciduous forest