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#biological terminology

2 public questions tagged with this topic.

Classification Basic

The term systematics was proposed by

Concept of systematics as ordered arrangement of organisms into coherent system introduced early by Carolus Linnaeus in Systema Naturae 1735 where he developed hierarchical ranking class order genus species and binomial nomenclature providing robust framework for systematic botany and zoology. While Darwin contributed evolutionary mechanism natural selection, Julian Huxley proposed new systematics 1940, de Candolle term taxonomy. Linnaeus's definition emphasized systematic placement based on reproductive characters especially stamen number and pistil counts, establishing foundation for subsequ

Ref: Linnaeus Systema Naturae 1735; Mayr Principles Systematics History systematics term Linnaeus

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Animal Classification

Condition of having two nostrils is called

Condition possessing two separate external nostrils or nares connected via internal choanae to buccal cavity is termed dirhinous derived from Greek di two and rhinos nose, representing standard gnathostome vertebrate arrangement including fishes, amphibians, reptiles, birds and mammals where paired olfactory sacs sample water or air bilaterally improving gradient detection. Monorhinous or monorhiny describes single median nostril in cyclostomes lamprey and hagfish, trirhinous hypothetical anomaly, polyrhinous multiple irregular openings pathological not evolutionary term. Dirhiny facilitates b

Ref: Romer Vertebrate Body 6th ed. Nasal Terminology; Campbell Biology 12th ed. Chapter 34 Olfactory Evolution

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