Understanding the Analogy: Pedology and Soil

The question asks us to find the term that completes the analogy based on the relationship between the first two terms. The analogy is: Ichthyology : Fishes :: Pedology : ?

This type of analogy typically represents a relationship between a field of study and its subject. Let's analyze the first pair: Ichthyology : Fishes.

What is Ichthyology?

Ichthyology is the branch of zoology devoted to the study of fishes. Scientists who study fishes are called ichthyologists.

Applying the Relationship to the Second Pair: Pedology

Following the pattern from the first pair, the second pair Pedology : ? should represent Pedology as a field of study and the unknown term as its subject. Therefore, we need to identify what Pedology is the study of.

What is Pedology?

Pedology is the study of soil in its natural environment. It is a major branch of soil science. Pedology deals with the formation, description, and classification of soils.

Analyzing the Options

Based on the definition of Pedology, let's look at the given options:

• Shells: The study of shells is called Conchology (a branch of Malacology). Pedology is not the study of shells.
• Names: The study of names is called Onomastics. Pedology is not the study of names.
• Soil: The study of soil in its natural environment is called Pedology. This matches the definition.
• Moon: The study of the Moon is called Selenology (a branch of Astronomy). Pedology is not the study of the Moon.

Conclusion

The relationship in the analogy is 'Field of Study : Subject of Study'.

Ichthyology is the study of Fishes.

Pedology is the study of Soil.

Therefore, the term that completes the analogy is Soil.

Step-by-Step Reasoning

1. Identify the relationship between the first pair: Ichthyology is the study of Fishes.
2. Assume the same relationship applies to the second pair: Pedology is the study of the unknown term.
3. Recall or determine what Pedology is the study of.
4. Confirm that Pedology is the study of soil.
5. Check the options to find 'Soil'.
6. Select 'Soil' as the correct answer that completes the analogy.

Revision Table: Key Scientific Fields

Additional Information: Related Fields of Study

Understanding analogies involving scientific fields requires knowing what different branches of science study. Here are a few related examples:

• Zoology: The branch of biology that studies the animal kingdom. Ichthyology is a sub-discipline of zoology.
• Geology: The science that deals with the Earth's physical structure and substance, its history, and the processes that act upon it. Pedology is related to geology and geography.
• Astronomy: The study of celestial objects, space, and the physical universe as a whole. Selenology is a sub-discipline of astronomy focused on the Moon.
• Malacology: The branch of invertebrate zoology that deals with the Mollusca (mollusks). Conchology is the study of mollusk shells, often considered a sub-discipline of malacology.
• Linguistics: The scientific study of language. Onomastics, the study of names, is a branch of linguistics or cultural studies.

Knowing these relationships helps in solving similar analogies.