Biomes and Succession Tutorial

Biomes and Succession Tutorial

You will need to complete this lesson and score at lest 85% to be able to take a retest!

Biodiversity in Biomes

• Tropical Rainforest is the land biome with the most biodiversity

• The ocean is the aquatic biome with the most biodiversity

• The tundra and the desert both have very low biodiversity

Multiple Choice

How does biodiversity contribute to sustainability of an ecosystem?

• The increased variety of organisms results in more food and habitat choices.

• Smaller food supply benefits the predators.

• Biodiversity cycles and has minimal affect on an ecosystem.

• Ecosystems cannot exist with an abundance of biodiversity because of competition.

Multiple Choice

A local pet store expands and begins selling exotic organisms. The exotic organisms are easy to care for when they are younger, but become very difficult to control as they get older. The owners often decide to release their new pets into the local environment rather than continue to care for them. The released animals do not have any natural enemies and their population expands unchecked. How will this affect the biodiversity of the ecosystem?

• It introduces an invasive species, which will increase the biodiversity of the ecosystem.

• It introduces an invasive species, which will decrease the biodiversity of the ecosystem.

• It introduces a native species, which will not affect the biodiversity of the ecosystem.

• It reintroduces a native species, which will decrease the biodiversity of the ecosystem.

Multiple Choice

Clownfish, sea anemone, coral, sea urchins, sponges, and parrot fish are just a few examples of the large variety of organisms that can be found in a coral reef. The coral reef and its inhabitants are suffering due to several factors such as pollution, coastal development, sedimentation and destructive fishing practices. What would be the most likely result if some of the species in the coral reef are destroyed?

• Other organisms would move into the coral reef area.

• The coral reef would be allowed to flourish without so many fish and plants living in and around it.

• The coral reef would begin to deteriorate without the variety of fish and plants necessary to maintain balance.

• The waters surrounding the coral reef will become cool with the decreasing number of organisms living there.

Multiple Choice

An ecosystem with great biological diversity decreases —

• the number of species present in the ecosystem

• competition between different species in the ecosystem

• available space for organisms in the ecosystem

• available food supply for organisms in the ecosystem

Multiple Choice

Refer to the table. Which plants are more adapted for the tundra?

• 1

• 2

• 3

• 4

Multiple Choice

Refer to the table. Which plants are more adapted for the tropical rainforest?

• 1

• 2

• 3

• 4

Multiple Choice

Refer to the table. Which plants are more adapted for the desert?

• 1

• 2

• 3

• 4

Multiple Choice

Refer to the table. Which plants are more adapted for the grasslands?

• 1

• 2

• 3

• 4

Multiple Choice

Adaptations help improve an animal’s chances of survival and reproduction. They can be behavioral or structural.

Which choice describes an animal best suited for a cold environment?

• eyes and nostrils on the top half of the head, outer covering of scales

• special feet with flattened, webbed toes for climbing up smooth surfaces

• torpedo body shape for fast swimming

• two layers of fur: inner layer insulates, outer layer sheds moisture and protects from wind

Multiple Choice

How does secondary succession help restore equilibrium to a region destroyed by a flood?

• It increases the number and types of species.

• It brings back species from extinction.

• It stops other floods from occurring.

• It decreases the rate of evolution.

Multiple Choice

Some ranchers use controlled fires to rid their grazing lands of unwanted plants. These ranchers keep their land in early stages of succession and in a state of equilibrium that is best for their livestock. Which of these kinds of plants would MOST LIKELY be some of the first plants found growing in a pasture with soil after a fire?

• trees

• grasses

• ferns

• mosses

Multiple Choice

Which of these BEST explains why forest trees are the final stage in succession in this type of ecosystem?

• Trees are very large and use up all of the available nutrients.

• Trees have deep roots and soak up all of the ground water.

• Trees are tall and make it hard for small plants to grow because they block the sunlight.

• Trees have many leaves and keep other plants from growing by using the available air.

Multiple Choice

Which of these types of environments is MOST LIKELY to experience the arrival of pioneer species?

• an old growth forest

• an undisturbed prairie

• an established mountain lake

• a newly formed volcanic island

Multiple Choice

What type of organisms would be present in Stage II of this image?

• mushroom and fungi that help break down dead material

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

• conifer trees and large bushes with roots that loosen the soil

• lichen and mosses that can grow on rocky surfaces

Multiple Choice

The figure above shows the same ecosystem in Texas at two different times.

Which of the following MOST likely caused the change of species shown in the figure?

• development of a parking lot

• passing through of a glacier

• preservation of habitat

• occurrence of a forest fire

Multiple Choice

Which of the following sequences MOST likely represents ecological succession on a recently abandoned farm?

• grasses --> flowering plants --> shrubs --> maple trees

• maple --> trees --> shrubs --> flowering plants --> grasses

• shrubs --> grasses --> maple trees --> flowering plants

• flowering plants --> maple trees --> shrubs --> grasses

Multiple Choice

What is the relationship between ecological succession and equilibrium in an ecosystem?

• Ecological succession helps maintain equilibrium in an ecosystem.

• Ecological succession prevents ecosystems from ever reaching equilibrium.

• There is no relationship between ecological succession and equilibrium.

• Ecological succession and equilibrium are the same thing.