Biology Classification System Flashcards
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Biology Classification System Flashcards

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Questions and Answers

Why do biologists use classification to organize living organisms?

Biologists use classification to organize living organisms into groups so that the organisms are easier to study.

Who was Carolus Linnaeus and what did he do?

Carolus Linnaeus was a Swedish scientist who devised a system of naming organisms and developed a classification system based on observable features.

What is binomial nomenclature?

Binomial nomenclature is Linnaeus's naming system consisting of a two-part name, with the first part being the genus and the second being the species.

What are the seven levels of classification?

<p>Kingdom, phylum, class, order, family, genus, and species.</p> Signup and view all the answers

Which of the levels is the most specific and which is the least specific?

<p>The most specific level is species, and the least specific level is kingdom.</p> Signup and view all the answers

How do scientists classify different species?

<p>By similarities based on cell type, cell number, and feeding type.</p> Signup and view all the answers

Who was Charles Darwin and what is he known for?

<p>Charles Darwin was a British naturalist known for the Theory of Natural Selection.</p> Signup and view all the answers

What is classification?

<p>The process of grouping things based on their similarities.</p> Signup and view all the answers

What is taxonomy?

<p>The scientific study of how living things are classified.</p> Signup and view all the answers

What is a eukaryote?

<p>An organism with a cell that contains a nucleus.</p> Signup and view all the answers

What is a prokaryote?

<p>An organism whose cell lacks a nucleus.</p> Signup and view all the answers

What are characteristics of the organisms in the Archaebacteria kingdom?

<p>Organisms that existed before dinosaurs and lived in extreme environments.</p> Signup and view all the answers

What are characteristics of the organisms in the Eubacteria kingdom?

<p>Bacteria that live in more neutral conditions and have a different chemical makeup from Archaebacteria.</p> Signup and view all the answers

What are the characteristics of organisms in the Protists kingdom?

<p>They include various organisms that are different from one another, including animal-like, fungus-like, and plant-like protists.</p> Signup and view all the answers

What are the characteristics of organisms in the Fungi kingdom?

<p>They eat dead or decaying organisms and play a critical role in nutrient cycling.</p> Signup and view all the answers

What are the characteristics of organisms in the Plantae kingdom?

<p>They feed almost all of the heterotrophs on earth.</p> Signup and view all the answers

What are the characteristics of organisms in the Animalia kingdom?

<p>They are capable of movement at some point in their lives and have adaptations for finding and processing food.</p> Signup and view all the answers

Which kingdoms are eukaryotic?

<p>Protists, Fungi, Plantae, and Animalia.</p> Signup and view all the answers

Which kingdoms are prokaryotic?

<p>Archaebacteria and Eubacteria.</p> Signup and view all the answers

Which kingdoms are multicellular?

<p>Plantae and Animalia.</p> Signup and view all the answers

Which kingdoms are unicellular?

<p>Archaebacteria and Eubacteria.</p> Signup and view all the answers

Which kingdoms are both unicellular and multicellular?

<p>Protists and Fungi.</p> Signup and view all the answers

Which kingdom is autotrophic?

<p>Archaebacteria.</p> Signup and view all the answers

Which kingdom can be both autotrophic or heterotrophic?

<p>Eubacteria.</p> Signup and view all the answers

Which kingdoms are heterotrophic?

<p>Protists, Fungi, Plantae, and Animalia.</p> Signup and view all the answers

What is adaptation?

<p>An inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment.</p> Signup and view all the answers

What is a scientific theory?

<p>A well-tested explanation for a wide range of observations or experimental results.</p> Signup and view all the answers

What are the factors that affect the process of natural selection?

<p>Overproduction, Variation, Competition, and Selection.</p> Signup and view all the answers

What is evolution?

<p>Change over time; the process by which modern organisms have descended from ancient organisms.</p> Signup and view all the answers

What is overproduction?

<p>Species produce far more offspring than can possibly survive.</p> Signup and view all the answers

What is natural selection?

<p>The process by which individuals better adapted to their environment are more likely to survive and reproduce.</p> Signup and view all the answers

What is competition in the context of natural selection?

<p>Members of a species must compete for limited resources to survive.</p> Signup and view all the answers

What is selection in the context of natural selection?

<p>Some variations make individuals better adapted to their environment and more likely to survive and reproduce.</p> Signup and view all the answers

What is artificial selection?

<p>The practice of breeding only organisms with desired characteristics.</p> Signup and view all the answers

What is a scientific name?

<p>The unique, two-part scientific name indicating an organism's genus and species.</p> Signup and view all the answers

What is a fossil?

<p>The preserved remains or traces of an organism that lived in the past.</p> Signup and view all the answers

What is a common ancestor?

<p>Certain organisms are similar because they share a common ancestor.</p> Signup and view all the answers

Study Notes

Classification and Taxonomy

  • Classification organizes living organisms into groups for easier study.
  • Taxonomy is the scientific study of classifying living things.
  • The classification hierarchy includes levels: Kingdom, Phylum, Class, Order, Family, Genus, Species.

Carolus Linnaeus and Naming Systems

  • Carolus Linnaeus created a naming system called binomial nomenclature.
  • Each organism is assigned a two-part scientific name: Genus (capitalized) and Species (not capitalized), both italicized.

Kingdoms of Life

  • Six kingdoms: Archaebacteria, Eubacteria, Protists, Fungi, Plantae, and Animalia.
  • Archaebacteria and Eubacteria are prokaryotic (lack a nucleus); all other kingdoms are eukaryotic (contain a nucleus).
  • Plantae and Animalia are multicellular; Archaebacteria and Eubacteria are unicellular; Protists and Fungi can be both.

Characteristics of Kingdoms

  • Archaebacteria: Exist in extreme environments like hot springs and acidic conditions.
  • Eubacteria: Common bacteria living in neutral conditions with a different chemical makeup than archaebacteria.
  • Protists: Diverse and can be animal-like, fungus-like, or plant-like; can be beneficial or harmful.
  • Fungi: Decomposers that break down dead organic material; found primarily on land.
  • Plantae: Primary producers that sustain heterotrophic life forms through photosynthesis.
  • Animalia: Heterotrophic, mobile organisms with various adaptations for survival.

Biological Concepts

  • Eukaryote: Organisms with cells that have a nucleus.
  • Prokaryote: Organisms whose cells lack a nucleus.
  • Multicellular: Organisms made of multiple specialized cells.
  • Unicellular: Organisms composed of a single cell.
  • Autotrophic: Organisms that produce their own food (e.g., plants).
  • Heterotrophic: Organisms that rely on other sources for food (e.g., animals).

Evolution and Natural Selection

  • Darwin's Theory of Natural Selection explains how species evolve over time through adaptation.
  • The process involves factors like overproduction, variation, competition, and selection.
  • Overproduction: Species produce more offspring than can survive, leading to competition for resources.
  • Variation: Differences among individuals in a population; critical for natural selection.
  • Adaptation: Traits that enhance survival or reproduction in a specific environment.
  • Artificial Selection: Breeding organisms for desired traits.

Definitions and Important Terms

  • Fossil: Preserved remains or traces of ancient organisms.
  • Scientific Theory: A well-tested explanation for a range of observations or experimental results.
  • Common Ancestor: Organisms exhibit similarities because they share a common ancestor.

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Description

These flashcards cover key concepts of biological classification and the contributions of Carolus Linnaeus. Learn how biologists organize living organisms to enhance the study of biodiversity and taxonomy. Perfect for biology students and anyone interested in the natural sciences.

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