Biodiversity, Succession, and Ecosystems Test

When there is higher biodiversity

• more organisms are likely to die because they can't adapt to environmental changes.

• there is less diversity.

• there is more diversity and higher sustainability of life.

• there is more diversity and lower sustainability of life

A small marine(ocean) area has phytoplankton as its only producer. Should the marine biologist be concerned about this ecosystem if the phytoplankton die?

• No the fish do not need the phytoplanton. Since there are so many fish, there is high biodiversity.

• Yes, this ecosystem has low biodiversity. Without a producer the herbivores will die also.

• Yes, this system has high biodiversity; however the fish can adapt and get food from another source.

• Yes, the fish will overate to get all of the phytoplankton that is left, then they will die.

How do biodiversity and sustainability work together?

• The lower the biodiversity the greater the sustainability.

• The higher the biodiversity, the less sustainable the ecosystem

• The higher the biodiversity, the greater the sustainability.

• Biodiversity has nothing to do with sustainability.

High biodiversity is

• having a lot of the same organism.

• having a few of the same organism.

• having a lot of variety of different organisms.

• only having one of each organism.

What can you infer about the first organisms to colonize or develop an area during primary succession?

• They must be animals because the plants cannot grown in rocky areas.

• They must be large and hardy.

• They must be able to thrive in rocky areas.

• They must have long life cycles.

Some plants have stems that can hold water and have almost no leaves, which reduces/decreases water loss. In which biome would this be helpful?

• Desert

• Swamp

• Rainforest

• Grassland

Which example is an abiotic (non-living) factor?

• Wind

• Bacteria

• Plants

• Animals

Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species?

• Conifer trees and tall grasses with roots that loosen the soil

• Mosses and lichens that can grow on rocky surfaces

• Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil

• DVines and shrubs that help prevent the erosion of shallow soil

Which stage only has soil after a forest fire?

• Stage 4

• Stage 2

• Stage 8

• Stage 6

Which two biomes have the highest biodiversity (have the most amount of different animals and plants)?

• Desert and Tundra

• Rainforest and Tundra

• Rainforest and Coral Reefs

• Coral Reefs and Tundra