Biology Revision notes Ecology: 1) Ecosystems‚ sampling and population studies Population: All the individuals of a given species living together in the same area and at the same time. Community: Community: all the individuals of all the species living together in the same area and at the same time. Habitat: The area in which an organism lives within an ecosystem Niche: describes where an organism lives‚ what it does (its role)‚ what it feeds on and how it interacts with other organisms and the
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Formation of new species from ancestral species 2. 2 components a) genetic isolation b) Genetic divergence 3. Adds new branch to the tree of life C. Species Concept 1. Evolutionary independent population 2. Distinguished by common characteristics a) shared amongst members of species b) Set them apart from other species 3. Species arise as a consequence of a) lack of gene flow w/ other populations b) Subsequent ?? D. Biological Species 1. Reproductively isolated 2. Members of a species a) can interbreed
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This world (Earth) we live on today have thousands of species (flora‚ fauna and organisms) of all different features‚ family and history of growth and survival. The theory of natural selection introduces the theory of survival of the fittest flora and fauna‚ where one survives only if it is fit for the nature
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1- why were introductions of new species into Europe so popular long ago? • Today human introduction of species into new habitats is one of the most troublesome problems with life on earth • In 1749 Linnaeus was one of the first scientists botanists and father of modern taxonomy of plants sent a colleague to North America to collect plants • Western Europe’s climate was similar to the climate of North America these places had a great variety of plants species • Biography of large scale global
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“Humans are a peaceful species at heart” How far do you agree? Are humans a peaceful species at heart? It’s a difficult task to pick a clear side but many people have many opinions. There are various people who will say yes‚ humans are a peaceful species at heart but there are equally many people who would say no. After all‚ it is a broad topic concerning an unpredictable species. One strong argument in support of this statement would be that if we weren’t a peaceful species how would we co-exist
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Which are species x‚ y‚ and z. These three plants might have the potential to produce the curol that the Bc is endangered and may not be able to produce. We will be testing these plants molecular and structural traits to see which one is closely related to the Botana Curus ‚ using microscopes simulated electrophoresis and much more. MATERIALS: The materials we used : 1) The Lab packet 2) Foam cups 3) Chromatography paper 4) Pen or Pencil 5) Microscope slides for species x ‚y ‚z ‚and
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and not a resource). Be able to rank from smallest to largest: ecosystem‚ landscape‚ biome‚ biosphere Be able to rank from smallest to largest (in terms of numbers and diversity of life): species‚ population‚ biota and biosphere. Also‚ what is the difference between a population of a species and a species overall? Make sure you can explain the Law of Limiting Factors. What is the difference between the optimum conditions‚ the zones of tolerance and the zones of stress? Can life exist outside
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What are the names of the species used in this experiment? Which of these species was the most tolerant of increased acidity in the aquarium? Which species was the least tolerant? The names of the species used in the experiment were clam‚ dragonfly‚ and side swimmer. The specie that was the most tolerant was the dragonfly and the least tolerant was the clam. Describe how acid precipitation affects ecosystems. Acid precipitation affects the ecosystem‚ for example‚ lowering ph in water when it
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Bottom dwellers refers to any species of animal or some other organism that lives on the sea floor. Biologists often use the term benthos to refer to bottom dwellers. Benthos feed off algae. Examples include many species such as crab rock-fish worms sea slugs sea snails. Sea cucumber Starfish Crayfish coral Some Bottom dwellers clean the ocean floors Bottom dwellers refers to any species of animal or some other organism that lives on the sea floor. Biologists often use the
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In this case they are separated from the environment. But another important reason why humans will always depend on the environment is because our lives depend on biodiversity. Meaning that we get clothing‚ medicines‚ food and furniture from other species. Just because that people rely on biodiversity they have to conserve biodiversity and can save it for future generations (www.scienceclarified.com). But before knowing all the damage this can cause to us‚ firstly we should know what biodiversity is
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