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Zoology Stuff: ALL. Beautiful Breeds Explore amazing facts about some of the breeds of horses living today. Birdwatching with Theodore Roosevelt Can you find all 16 birds in this sanctuary? When you do, listen to its song. Crazy Camouflage Create a flounder fish that's hard to spot! Create a Coral Reef Make a 3D diorama! All you need are pasta, Play-Doh, pipe cleaners, pom-poms, and hair curlers.
Draw a Monarch Learn how to create a scientific illustration of a monarch butterfly in a few easy steps!
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Feed the Birds Make your own bird feeder and record your observations in a bird journal. How do horses move?
Find out with these flipbooks. In Pictures: Extreme Mammals Take a look at some unusual living and extinct mammals.
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In Pictures: Flamingos Find out what's so fascinating about these beautiful, pink birds. In the 18th century, zoology passed through reforms provided by both the system of nomenclature of Carolus Linnaeus and the comprehensive works on natural history by Georges-Louis Leclerc de Buffon; to these were added the contributions to comparative anatomy by Georges Cuvier in the early 19th century.
Physiological functions, such as digestion, excretion, and respiration, were easily observed in many animals, though they were not as critically analyzed as was blood circulation. Following the introduction of the word cell in the 17th century and microscopic observation of these structures throughout the 18th century, the cell was incisively defined as the common structural unit of living things in by two Germans: Matthias Schleiden and Theodor Schwann.
In the meanwhile, as the science of chemistry developed, it was inevitably extended to an analysis of animate systems. And in the midth century the French physician and physiologist Claude Bernard drew upon both the cell theory and knowledge of chemistry to develop the concept of the stability of the internal bodily environment , now called homeostasis. The cell concept influenced many biological disciplines , including that of embryology , in which cells are important in determining the way in which a fertilized egg develops into a new organism.
The unfolding of these events—called epigenesis by Harvey—was described by various workers, notably the German-trained comparative embryologist Karl von Baer , who was the first to observe a mammalian egg within an ovary. Another German-trained embryologist, Christian Heinrich Pander , introduced in the concept of germ, or primordial , tissue layers into embryology.
In the latter part of the 19th century, improved microscopy and better staining techniques using aniline dyes, such as hematoxylin, provided further impetus to the study of internal cellular structure. The theory of evolution —that organisms are continuously evolving into highly adapted forms —required the rejection of the static view that all species are especially created and upset the Linnaean concept of species types.
Zoology for Kids: OLogy | AMNH
Darwin recognized that the principles of heredity must be known to understand how evolution works; but, even though the concept of hereditary factors had by then been formulated by Mendel, Darwin never heard of his work, which was essentially lost until its rediscovery in Genetics has developed in the 20th century and now is essential to many diverse biological disciplines. The discovery of the gene as a controlling hereditary factor for all forms of life has been a major accomplishment of modern biology.
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There has also emerged clearer understanding of the interaction of organisms with their environment. Closely related to this study of ecology are inquiries into animal behaviour , or ethology. Citation Impact 3. Skip to main content Advertisement.
Featured article: Metabolic reprogramming involving glycolysis in the hibernating brown bear skeletal muscle Bertile et al. Hannah Mumby. Featured blog: Data in a snap: Size, age and condition of elephants can be pulled out of photographs Dr Hannah Mumby takes us through her new methodology article on extracting data from survey photographs. Effects of reproduction and environmental factors on body temperature and activity patterns of wolverines Authors: Alexandra Thiel, Alina L. Comparative and functional analysis of the digital mucus glands and secretions of tree frogs Authors: Julian K.
A dune with a view: the eyes of a neotropical fossorial lizard Authors: Carola A. Most recent articles RSS View all articles. Ulrich Technau is Professor of developmental biology at the University of Vienna "Zoology is addressing some of the most fundamental questions in Biology. Submit manuscript.
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