biology

Jan Ritzema Bos

Jan Ritzema Bos is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Jan Ritzema Bos rather than just read about it. In short: Jan Ritzema Bos (25 July 1850, in Groningen – 7 April 1928, in Wageningen) was a Dutch plant pathologist and zoologist. He served as the first director of the Willie Commelin Scholten Foundation and founder of the Plant Protection Service in 1899 in Amsterdam.

Key takeaways

Jan Ritzema Bos belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Jan Ritzema Bos to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Jan Ritzema Bos from memory before moving on to harder problems.

Reference excerpt

Jan Ritzema Bos (25 July 1850, in Groningen – 7 April 1928, in Wageningen) was a Dutch plant pathologist and zoologist. He served as the first director of the Willie Commelin Scholten Foundation and founder of the Plant Protection Service in 1899 in Amsterdam. Bos described several species of plant nematode.

Life and work

Bos was the son of teacher for the deaf and dumb Pieter Pieters Bos (1812-1891) and Geessien Jans Ritzema (1823-1903), and was named after his grandfather Jan Ritzema. His brother was Hemmo Bos, author and lecturer at the agricultural college in Wageningen. He went to study zoology at the University of Groningen in 1868 and received a doctorate with work under H.C. van Hall and M. Salverda in 1874. He then became a teacher at the Rural Economics School in Groningen which became an agricultural school in 1870. The school closed down in 1871 and Bos moved to Warffum where he began to study plant diseases. His advisor professor Salverda left Groningen in 1872 and became an inspector for agricultural schools. He recommended Bos for the school in Wageningen. Bos moved here in 1873 and began to work first on establishing an insect collection. He carried out application-oriented research and was nominated as Director of the newly founded Willie Commelin Scholten 'Institute of Phytopathology' (subsequently re-named the Phytopathological Service) at Wageningen. In 1895 he became director of the Here Ritzema-Bos continued with the 'Plant Protection Service', the Netherlands Society of Plant Pathology and the 'Tijdschrift over Plantenziekten' which later became The Netherlands Journal of Plant Pathology and in 1994 was continued as the European Journal of Plant Pathology, published under the aegis of the European Foundation for Plant Pathology. He took a special interest in the protection of insectivorous birds and was a supporter of the Useful Animals Act of 1880. He was succeeded by Johanna Westerdijk (1883-1961) as the new director of the WCS-Laboratory in 1906.

Books Nederlandsche Planten - Th. Nieuwenhuis, L. Klaver & Dr.J. Ritzema Bos - 55 loose lithographed plates (S.L. van Looy, Amsterdam 1905) OCLC 34878273 (all editions) Tierische Schädlinge und Nützlinge für Ackerbau, Viehzucht, Wald- und Gartenbau; Lebensformen, Vorkommen, Einfluß und die Maßregeln zu Vertilgung und Schutz. Praktisches Handbuch - Jan Ritzema Bos (Berlin, Paul Parey, 1891)

References

External links Works by Jan Ritzema Bos at Project Gutenberg Works by or about Jan Ritzema Bos at the Internet Archive

Illustrations

Worked examples

Example 1 — a first encounter with Jan Ritzema Bos

Start with the simplest possible case. Write down what Jan Ritzema Bos claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Jan Ritzema Bos before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Jan Ritzema Bos ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Jan Ritzema Bos

In research: Jan Ritzema Bos appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Jan Ritzema Bos in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Jan Ritzema Bos is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1850 births, 1928 deaths, 19th-century Dutch biologists, so understanding it makes those chapters shorter.
In everyday life: Look for Jan Ritzema Bos outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Jan Ritzema Bos in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Jan Ritzema Bos means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Jan Ritzema Bos out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jan Ritzema Bos in simple terms?

Why does Jan Ritzema Bos matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Jan Ritzema Bos?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Jan Ritzema Bos.