2024 Living Units and Change

Dormancy is a change that affects an organism over time on a ___.

• daily basis

• hourly basis

• seasonal basis

• long term basis

If a fire destroyed a deciduous forest, what short term effects would the forest ecosystem experience?

• Many plants and animals would die or relocate.
• There would be no effect on the ecosystem.
• All of the plants would die, but the animal population would increase.
• The hardwood trees would grow faster and the animals would not be affected.

What process is occurring in the diagram?

• Dormancy
• Phototropism
• Transportation
• Hibernation

If a fire destroyed a deciduous forest, what long term effects would the forest ecosystem experience?

• Large mammals and snakes would be the dominant animal populations relocating into this ecosystem.
• Fast growing plants would be the only plants with the ability to survive in this forest.
• The ecosystem would be lifeless because animals would not relocate into this ecosystem.
• Pioneer species would begin to grow and the ecosystem would be restored over time.

Why do bears hibernate during the winter months?

• Bears bypass winter when their food supply disappears to save energy.
• Bears bypass winter to protect themselves from roaming predators.
• Bears bypass winter when the rainfall is extremely high and survival would be difficult.
• Bears bypass winter when the temperatures are too cold for survival.

What is the figure shown displaying?

• Climate change
• Eutrophication
• Phototropism
• Niche

The illustration below shows what an area looked like and changed over a period of 60 years.  What process can explain the changes observed during the 60 years?

• Natural speciation

• Ecological imbalance

• Phototropism

• Ecological succession

Which two examples undergo dormancy?

• Rose bush and Mouse

• Squirrel and Human

• Rose bush and Oak tree

• Oak tree and Black bear

Which would most likely cause a rabbit population to increase?

• Normal amounts of food and decreased birth rates
• More predators and lack of space
• Limited food and water
• Excess food, few predators and increased birth rates

Identify examples of phototropism.

• A, B, and C only

• A, B, and D only

• A, B, C and D

• B, C, and D only