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Lesson Example Discussion Quiz: Class Homework

Step-3

Title: Text Structure And Purpose

Grade: 1300-a Lesson: S2-L3

Explanation: Hello Students, time to practice and review the answers.

Description:

Step	Type	Explanation	Answer
1	Problem	In many agricultural environments, the banks of streams are kept forested to protect water quality, but it’s been unclear what effects these forests may have on stream biodiversity. To investigate the issue, biologist Xingli Giam and colleagues studied an Indonesian oil palm plantation, comparing the species richness of forested streams with that of nonforested streams.Giam and colleagues found that species richness was significantly higher in forested streams, a finding the researchers attribute to the role leaf litter plays in sheltering fish from predators and providing food resources. Which choice best states the main purpose of the text?
2	Hint	The details and facts help to draw the main idea of the passage.
3	Sumup	Can you summarize what you’ve understood in the above steps?
4	Choice.A	Choice A is incorrect. This isn’t the main purpose of the text. The text never mentions agricultural yields.	It discusses research intended to settle a debate about how agricultural yields can be increased without negative effects on water quality.
5	Choice.B	Choice B is incorrect. This isn’t the main purpose of the text. The text never mentions other kinds of agricultural environments.	It explains the differences between stream-protection strategies used in oil palm plantations and stream-protection strategies used in other kinds of agricultural environments.
6	Choice.C	Choice C is incorrect. This isn’t the main purpose of the text. The text never mentions any previously held view about how fish in these streams try to avoid predators.	It describes findings that challenge a previously held view about how fish that inhabit streams in agricultural environments attempt to avoid predators.+
7	Choice.D	Choice D is the correct answer. The author first describes an unresolved question: what effect do bank forests have on stream biodiversity? Then the author presents a study that answers the question: bank forests increase stream biodiversity.	It presents a study that addresses an unresolved question about the presence of forests along streams in agricultural. environments
8	Step:	Correct sentence	It presents a study that addresses an unresolved question about the presence of forests along streams in agricultural.
9	Answer	Choice	D
10	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

In many agricultural environments, the banks of streams are kept forested to protect water quality, but it’s been unclear what effects these forests may have on stream biodiversity. To investigate the issue, biologist Xingli Giam and colleagues studied an Indonesian oil palm plantation, comparing the species richness of forested streams with that of nonforested streams.Giam and colleagues found that species richness was significantly higher in forested streams, a finding the researchers attribute to the role leaf litter plays in sheltering fish from predators and providing food resources.

Which choice best states the main purpose of the text?

Hint

The details and facts help to draw the main idea of the passage.

Sumup

Can you summarize what you’ve understood in the above steps?

Choice.A

Choice A is incorrect. This isn’t the main purpose of the text. The text never mentions agricultural yields.

It discusses research intended to settle a debate about how agricultural yields can be increased without negative effects on water quality.

Choice.B

Choice B is incorrect. This isn’t the main purpose of the text. The text never mentions other kinds of agricultural environments.

It explains the differences between stream-protection strategies used in oil palm plantations and stream-protection strategies used in other kinds of agricultural environments.

Choice.C

Choice C is incorrect. This isn’t the main purpose of the text. The text never mentions any previously held view about how fish in these streams try to avoid predators.

It describes findings that challenge a previously held view about how fish that inhabit streams in agricultural environments attempt to avoid predators.+

Choice.D

Choice D is the correct answer. The author first describes an unresolved question: what effect do bank forests have on stream biodiversity? Then the author presents a study that answers the question: bank forests increase stream biodiversity.

It presents a study that addresses an unresolved question about the presence of forests along streams in agricultural. environments

Step:

Correct sentence

It presents a study that addresses an unresolved question about the presence of forests along streams in agricultural.

Answer

Choice

Sumup

Can you summarize what you’ve understood in the above steps?