Soil Organic Matter

Soil Organic Matter

University

10 Qs

quiz-placeholder

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Soil Organic Matter

Soil Organic Matter

Assessment

Quiz

Biology

University

Practice Problem

Hard

NGSS
MS-LS2-3, MS-ESS2-1, HS-ESS2-2

+3

Standards-aligned

Created by

Charles Martinez

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A soil’s parent material determines

the development of soil horizons

the organic matter content of the soil
the mineral composition of the soil
the depth of the soil profile

Tags

NGSS.MS-ESS2-1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A soil's ability to retain water and nutrients is largely a function of its 

surface area to volume ratio
carbon to nitrogen ratio
biotic community
mineralogy

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The highest soil organic matter content would be expected

In cold environments, due to slow decomposition
In temperate environments, due to the balance of intermediate decomposition and plant productivity
In hot environments, due to high plant productivity
Soil organic matter content is ultimately not a function of climate

Tags

NGSS.HS-ESS2-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Within any particular climate, the rate of organic matter decomposition is primarily dependent upon

the chemical composition of the organic matter
which decomposer microbes are present
the species diversity of the decomposer community
the amount of sun- and ultraviolet light reaching the organic matter

Tags

NGSS.MS-LS2-3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is soil organic matter important?

It promotes soil structural stability

It helps prevent soil erosion

It promotes water retention within the soil matrix

All of these answers are correct

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

NGSS.MS-LS2-4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these situations will favor the highest soil decomposer activities?

When soil pores contain both air and water

When soil pores are mostly dry and filled with air

When soil pores are mostly filled with water

All of these conditions favor high soil decomposer activities

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Most organic matter entering the soil ultimately gets converted to

carbon dioxide

microbial biomass

soil aggregates

plant biomass

Tags

NGSS.MS-LS2-3

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