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BIO 101 Week 3 How Do Environmental Changes Affect a Population? Lab

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BIO 101 Week 3 How Do Environmental Changes Affect a Population? Lab
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BIO101 Week 3 How Do Environmental Changes Affect a Population? Lab 

( Lab Notebook, Answered All 10 Questions, References )

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Complete the MasteringBiology Lab: How Do Environmental Changes Affect a Population? located in the MasteringBiology Interactive Media link.

Complete the "How Do Environmental Changes Affect a Population Lab" worksheet by taking notes from the investigation and answering the questions associated with the investigation.


                                           Process of Science

How Do Environmental Changes Affect a Population?

Lab Notebook

Global Warming Data Table

Number of:

Size

Color

Large

Medium

Small

Black

Brown

Parental generation

10thgeneration

20thgeneration

30th generation

Graph your Global Warming data, using this key:

Large leafhoppers =

Medium leafhoppers = O

Small leafhoppers =

Black leafhoppers = X

Brown leafhoppers = X in color

graph1a

Predator Change Data Table

Number of:

Size

Color

Large

Medium

Small

Black

Brown

Parental generation

10thgeneration

20thgeneration

30th generation

Graph your Predator Change data:

graph2


Vegetation Change Data Table

Number of:

Size

Color

Large

Medium

Small

Black

Brown

Parental generation

10thgeneration

20thgeneration

30th generation

Graph your Vegetation Change data:

graph3


Pesticide Application Data Table

Number of:

Size

Color

Large

Medium

Small

Black

Brown

Parental generation

10thgeneration

20thgeneration

30th generation

Graph your Pesticide Application data:

graph4



Questions


1. What role does genetics play in the variation seen in this leafhopper population?

2. Note the results from the 20th generation under global warming conditions. Before continuing with the 30th generation, predict the population composition of the 30th generation.

3. What happened to the proportion of each type of leafhopper in subsequent generations under global warming conditions? Suggest a reason why the traits of the 30th generation make this population better adapted to its altered environment.

4. Why would you expect a change in predators to cause a difference in the types of leafhoppers being selected?

5. Note the differences between the parental, 10th and 20th generations when the predator changed from a bird to a snake. What evidence supports the view that leafhopper size is not affected by a change in predators?

6. What happened to the proportion of each type of leafhopper in subsequent generations when the predator changed from a bird to a snake? Suggest a reason why the traits predominant in the 30th generation make this population better adapted to the change in predators.

7. Describe some human activities around your school that could have influenced the natural vegetation in the area.

8. Note the differences between the parental and the 30th generations. What happened to the proportion of each type of leafhopper when the vegetation changed? Suggest a reason why the traits of the 30th generation make this population better adapted to its altered environment.

9. Identify some major sources of pesticides in your area.

10. What happened to the proportions of leafhoppers in each subsequent generation when pesticides were added to the environment? Explain why all the leafhoppers were not killed by the pesticide application.


BIO/101 Week 3 Lab Assignment

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BIO 101 Week 3 How Do Environmental Changes Affect a Population? Lab
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BIO_101_Week_3_How_Do_Environmental_Changes_Affect_a_Population_Lab.docx (765.93 KB)
Preview: this xxxxxxxxx leafhoppers x • Medium xxxxxxxxxxx = OSmall xxxxxxxxxxx = xxxxxxxx xxxxxxxxxxx = xxxxxx leafhoppers = x in colorPredator xxxxxx Data xxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx generation122222310th xxxxxxxxxxxxxxxxxxxxxx generation1231101530th generation0250223Graph xxxx Predator Change xxxxxxxxxxxxxxx Change xxxx xxxxxxxxxxx of:SizeColorLargeMediumSmallBlackBrownParental xxxxxxxxxxxxxxxxxxxxx generation123123220th generation025024130th xxxxxxxxxxxxxxxxxxxxxx your Vegetation xxxxxx data:Pesticide xxxxxxxxxxx xxxx TableNumber xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx generation222122310th generation520024120th xxxxxxxxxxxxxxxxxxxxxx generation2320250Graph your xxxxxxxxx Application xxxxxxxxxxxxxxx xxxx role xxxx genetics play xx the variation xxxx in xxxx xxxxxxxxxx population?The xxxxxxxx play an xxxxxxxxx role in xxxxxxxxx of xxxxxxxxxx xxxxxxxxxx in xxxx and color, xxxxxxx forms of xxxxx leads xx xxxxxxxxx in xxxxxxxxxxxxxxx within population xx there are xxxxxxxxx traits xx xxxxx which xxxxxx variation from xxxxxxxx and other x Note xxx xxxxxxx from xxx 20th generation xxxxx global warming xxxxxxxxxx Before xxxxxxxxxx xxxx the xxxx generation, predict xxx population composition xx the xxxx xxxxxxxxxx From xxx observation of xxxxx for generation xxxxxx under xxxxxx xxxxxxx condition, xxx predicted population xx 30th generation xxxxxxx dark xxxxx xxx small xxxxxxxxxxx rather than xxxxx one as xx 20th xxxxxxxxxx x What xxxxxxxx to the

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