12 Questions
What is the primary purpose of plants taking in carbon dioxide gas (CO2) and creating stored energy?
To release energy for respiration
How do sand, silt, and clay differ in terms of pore sizes?
Sand has small pore space, silt has large pore space, and clay has medium pore space.
Why do sandy soils hold so little water compared to clayey soils?
Clayey soils have small particles with tiny pore spaces.
What is the approximate proportion of living organisms in soil?
~1%
How do plants utilize the simple sugars produced by photosynthesis?
To build more complex molecules
What happens when organisms (including plants) break down sugar in their cells?
They metabolize the energy
Why is it challenging to study any aspect of soil in isolation?
Due to the complex classification of organisms like algae in soil ecology.
What implication does the phylogeny of all life on Earth have for studying soil science?
It demonstrates the complexity and potential confusion when classifying organisms in soil ecology.
What is the role of land plants in the creation of soil according to the text?
Soil formation is initiated by the decomposition of land plants.
Why is it crucial to study both the readings and class notes for the exam?
Readings may contain information not discussed in class, which could be included on the exam.
What makes the classification of organisms in soil ecology particularly challenging?
The overlapping terms used for classifying organisms in soil ecology.
Which statement best describes the relationship between soil and plant ecosystems?
Dead plants play a crucial role in the creation and maintenance of soil ecosystems.
Prepare for your ENVS 223 Soil Ecology midterm with this study guide. Remember, it is meant to complement your notes and readings, not replace them. Be prepared for questions on all readings and class discussions.
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