2.6-2.7 Adaptations and Ecological Succession

Multiple Choice

DO NOW: What is the ecological range of tolerance?

• The range of conditions that an organism can endure before injury or death

• The range of conditions that humans can tolerate in their environment

• The range of conditions that specialists can tolerate in their habitat

• The range of conditions that generalists can tolerate in their habitat

Multiple Choice

DO NOW: What is the main reason for the natural changes in Earth's climate over geologic time?

• Human activities

• Changes in the earth's orbit and tilt

• Natural disturbances

• Genetic biodiversity

Multiple Choice

DO NOW: Which of the following is an example of a periodic natural disturbance?

• Hurricanes

• Earthquakes

• Dry-wet seasons

• Volcanoes

Multiple Choice

DO NOW: Which of the following is an example of an episodic natural disturbance?

• Hurricanes

• Earthquakes

• Dry-wet seasons

• Volcanoes

Multiple Choice

DO NOW: Which of the following is an example of a random natural disturbance?

• Hurricanes

• Forest fire

• Dry-wet seasons

• Volcanoes

Multiple Choice

DO NOW: What is the main factor that makes populations of salmon more resistant to disturbances?

• Genetic biodiversity

• Human activities

• Changes in the earth's climate

• Natural disturbances

Labelling

DO NOW: This graph depicts the ecological tolerance of the Blackstripe topminnow in regard to the flow rate of the river/stream it lives in. Drag the labels to the approximate spots on the curve that they belong to. There are two duplicated options.

Drag labels to their correct position on the image

Optimum range

Zone of intolerance

Zone of intolerance

Zone of physiological stress

Zone of physiological stress

Multiple Select

DO NOW What happens when an organism experiences conditions near the edge of its tolerance range? (Select Two)

• • The organism’s ability to reproduce is reduced.

• • The organism may survive, but it is unlikely to thrive.

• • The organism expands its realized niche to adapt to new conditions.

• • The organism's fundamental niche shrinks.

Open Ended

When are grades due?

Multiple Choice

What is required for extra credit for the exam?

• Handwritten journal notes

• Typed notes

• Group project

• Online quiz

Multiple Choice

What must students do if they have not taken their Unit 1 Exam?

• Take it by tomorrow

• Take it next week

• Take it during lunch only

• Take it after school only

Multiple Choice

Shifts in the timing of hibernation, as well as shortening of the length of hibernation periods, have been recorded in a variety of species in response to changes in climate. As global temperatures increase, many animals have been emerging from hibernation earlier than usual. Which explanation BEST predicts how this environmental change will affect hibernating animals?

• The animals may emerge before they can find the food they need to survive.

• The animals that emerge earlier will have more time to gather resources, so survival will increase.

• The animals will probably find ways other than hibernation to conserve energy.

• The animals will migrate rather than hibernate, to better meet their needs for resources.

Open Ended

Describe the relationship between latitude and change in first leaf date depicted in the graph. Explain why you think this relationship exists.

Multiple Choice

Which of the following can be inferred from the graph?

• Global temperatures have been steadily rising since the mid 1900s

• Global temperatures have been steadily declining since the mid 1900s

• Global temperatures have mostly stayed the same since the mid 1900s

• Scientists are unable to take accurate global temperature measurements

Open Ended

Explain how genetic variations help a population increase some individuals' probability of surviving and reproducing in a specific environment.

Multiple Choice

Theodosius Dobzhansky discovered that successful species tend to have a wide variety of genes that do not appear to be useful to the species in its present environment. What did this discovery help explain about genetics and the changes that occur in a species over time?

• Environments with more organisms tend to have more successful species.

• Species with greater genetic diversity adapt more easily to changing environments.

• Changing environments prevent species from adapting and surviving.

• Species in a stable environment are more resistant to a changing environment.

Open Ended

Ivan read a story about a population of mice that become stranded in a dark jungle. Some mice were dark brown, while others were white. According to the process of natural selection, predict which color of mice would be more successful living in a dark jungle. Explain the concept of natural selection and your prediction in your response.

Multiple Choice

As environments change, what may become adaptations?

• Different traits

• Same traits

• No traits

• All traits

Multiple Choice

What happens to species when the pace of environmental change is too rapid?

• They adapt quickly

• They migrate out

• They die-off completely

• They thrive

Open Ended

Describe the difference in beak size between the two islands. Make a claim about the reason for this difference in beak size.

Exit Ticket

Complete any pending AP Classroom Quizzes
Update journal

Reorder

Based on what you know, Put the steps to Primary Succession in order starting with the most basic stage to the most complex.

• Pioneer species: lichen, moss

• Small Grasses

• Large Grasses and Shrubs

• Small, fast growing trees

• Large, slow growing hardwood trees

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Open Ended

Using your notes and your own words, answer the following question:

What is the main difference between primary and secondary ecological succession?

Open Ended

How do mosses help succession?

Multiple Choice

A climax community is ….

• the beginning of a new ecological succession.
• the rocks in a new environment.
• the fire that will cause destruction.
• an area that reaches its greatest growing potential.

Reorder

Based on what you learned, Put the steps to Primary Succession in order starting with the most basic stage to the most complex.

• Pioneer species: lichen, moss

• Small Grasses

• Large Grasses and Shrubs

• Small, fast growing trees

• Large, slow growing hardwood trees

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident