In DDC (19 th ed.), the main class '570' denotes:
Life Sciences
DDC Main Class '570' Explained
The Dewey Decimal Classification (DDC) system is a widely used method of library classification developed by Melvil Dewey. It organizes knowledge into ten main classes, which are further divided into more specific categories using a hierarchical numerical system. Understanding these main classes is fundamental for effective library resource organization and retrieval.
Dewey Decimal Classification (DDC) Overview
The DDC system assigns numbers to subjects based on their content, allowing libraries to arrange books and other materials on shelves in a logical, subject-based order. Each main class covers a broad area of knowledge, and subdivisions are used to represent more specific topics within those areas. The 19th edition of DDC, like other editions, maintains this core structure, providing specific numerical ranges for different disciplines.
'570' Classification in DDC 19th Edition
In the Dewey Decimal Classification (DDC) 19th edition, the main class '570' is specifically designated for Life Sciences. This broad category encompasses various fields related to the study of living organisms. It serves as the primary classification for subjects like biology, botany, zoology, ecology, and other related biological disciplines.
Let's look at the main classes in the DDC system to better understand where '570' fits:
| DDC Main Class | Subject Area |
|---|---|
| 000 | Computer Science, Information & General Works |
| 100 | Philosophy & Psychology |
| 200 | Religion |
| 300 | Social Sciences |
| 400 | Language |
| 500 | Science |
| 600 | Technology |
| 700 | Arts & Recreation |
| 800 | Literature |
| 900 | History & Geography |
As seen above, the 500s are dedicated to Science. Within this range, '570' is specifically allocated to Life Sciences, demonstrating the hierarchical and specific nature of the DDC system.
Life Sciences Category in DDC
The '570' class acts as the foundational number for all biological sciences. Further subdivisions within '570' specify particular aspects of life sciences:
- For example, '571' might cover specific topics in physiology.
- '572' and '573' often relate to biochemistry and specific biological processes.
- '574' could represent general biology.
- '575' is typically for evolution and genetics.
- '576' for microbiology.
- '577' for ecology.
- '578' for natural history of organisms.
- '579' for specific kinds of organisms.
This structure ensures that materials on any life science topic can be precisely classified and located.
Main DDC Classes Comparison
Let's consider the options provided in the question:
- Physics: In DDC, Physics is generally classified under the '530' range, which is part of the broader '500' Science category but distinct from '570'.
- Chemistry: Chemistry falls under the '540' range within the '500' Science main class, separate from Life Sciences.
- Life Sciences: As discussed, '570' is the main class explicitly assigned to Life Sciences, encompassing biology and related fields.
- Botanical Science: While Botanical Science (Botany) is a significant part of Life Sciences, '570' denotes the broader category of 'Life Sciences'. Botany itself would be a subdivision within '570' (e.g., '580' in DDC is often used for Botanical Sciences). Therefore, 'Life Sciences' is the more accurate main class description for '570'.
Based on the structure and definitions within the DDC 19th edition, the main class '570' unequivocally denotes Life Sciences.
Important Questions from Methods of Knowledge Organization - Teaching
Which of the following is the "principle of facet sequence"?
In Colon Classification (sixth edition), the phase relation digit 'b' shows:
In Dewey Decimal Classification, the number '028' stands for :
In classified Catalogue Code, 'specific added class number entry' in a classified catalogue is defined as :
Who, among the following, was the first to develop UDC?
