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  • Who discovered cells and who made cell theory? - CK-12 Foundation
    Cell theory, however, was developed by two scientists: Matthias Schleiden and Theodor Schwann In 1838, Schleiden proposed that all plants are made of cells A year later, Schwann extended this idea to animals, stating that all living things are composed of cells This formed the basis of the cell theory
  • Discovered: 150-year-old platypus and echidna specimens that . . .
    The newly discovered collection includes echidnas, platypuses and marsupials at varying life stages from fertilised egg to adolescence Caldwell was the first to make complete collections of every life stage of these species – although not all of the specimens have been found in the Museum
  • 8. 4C: The Species Concept in Microbiology - Biology LibreTexts
    ” Accordingly, the concept of species which works best for animals, becomes entirely a matter of judgement The approximately 5000 species of bacteria and archaea constitute a surprisingly small number, considering their relatively early evolution, genetic diversity, and ability to reside in all ecosystems on Earth
  • Great Moments in Plant Evolution, Part 1: Plants Invade the . . .
    But despite the barren landscape, the oceans and lakes would have been teeming with a variety of algae and ancient animals, such as corals, invertebrates, and early fish It was during the Ordovician period (485–444 mya) that the first plants gained a foothold on land
  • Great moments in evolution: the conquest of land by plants
    Download: Download high-res image (380KB) Download: Download full-size image Figure 1 Another great moment in evolution Inspired by the classical ‘Great moments in evolution’ cartoon by Gary Larson, this figure illustrates some of the key features that probably enabled early plants to thrive on land: the rigid cell wall, several plastids per cell, phenylpropanoids enabling protection for
  • Mycorrhizal fungi helped plants make the transition from . . .
    Conversely, if the relationship with mycorrhizal fungi developed more recently, different types of plants should have different responses to mycorrhizal fungi The researchers compared how a species of liverwort, a primitive terrestrial plant group, and flowering plants responded to a mycorrhizal fungus
  • Vertebrate - Evolution, Paleontology, Anatomy | Britannica
    Vertebrate - Evolution, Paleontology, Anatomy: The ancestral vertebrate (protovertebrate) has been sought for more than 100 years, but since the protovertebrate was probably small and soft-bodied it is unlikely a fossilized form will be found in a recognizable condition In the classification presented here subphylum Vertebrata is divided into eight classes





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