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33 Cards in this Set
- Front
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It refers to the variety of species on Earth including their genes, ecosystems and natural process that sustain life in the ecosystem. |
Biodiversity |
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Plant has? |
Plant: 270, 000 |
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Vertebrae has? |
Vertebrae: 45, 000 |
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Overall species |
8.7 million species |
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It is the differences within and between populations of species, and between different species. |
Species diversity |
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It is the differences in genes contained in all individual organisms. |
Genetic diversity |
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It refers to the variety of deserts, grasslands, forests, mountains, oceans, lakes, rivers, and wetlands. |
Ecosystem diversity |
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It includes the variety of processes such as matter cycling and energy flow taking place within ecosystems. |
Functional diversity |
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It is very important part of the natural capital. |
Biodiversity |
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It plays an important role in providing free ecological services. |
Biodiversity |
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It is the concept that explains the array of species on Earth. |
Biological Evolution |
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Proposed the concept of natural selection as a mechanism of biological evolution |
Alfred Russel Wallace and Charles Darwin |
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Individuals with specific advantage over other individuals are more likely to survive. |
Natural Selection |
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It occurs when some individuals of a population have genetically based traits that will improve their ability to survive and produce offspring with the same traits. |
Natural Selection |
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It explains the species diversity that brought about major groups of species. |
Natural Selection |
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It occurs through mutations or randomchanges in the structure or DNA molecules in a cell which is inherited by the offspring. |
DEVELOPMENT OF GENETIC VARIABILITY IN A POPULATION |
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can also have resulted from exposure to external agents such as radioactivity and chemicals. |
Mutations |
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It is the process of an individual to enable heritable trait, under predominating environment conditions, in order to survive. |
Adaptation |
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It enables individuals with the trait to produce more surviving offspring than other members. |
Differential Reproduction |
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It explains that two species arise from one reproducing species. |
SPECIATION |
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A new species is formed when some members of the population have evolved to a point where they can no longer breed with other individual. |
Speciation |
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Types of isolation |
Geographic isolation Reproductive isolation |
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It occurs when different groups of the same population of a species become physically isolated from one another for long periods |
GEOGRAPHIC ISOLATION |
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It describes that mutation and change by natural selection operate independently in the gene pools of geographically isolated populations. |
REPRODUCTIVE ISOLATION |
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It is another process affecting the number and types of species on the earth. This refers to the cessation of species to exist. |
EXTINCTION |
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are organisms that are found in only one area |
Endemic species |
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The number of different species |
Species richness |
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Relative abundance of individuals within each species |
Species Evenness |
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A healthy ecosystem must have at least ____________. |
40 producer species |
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is needed to help sustain various ecosystems. |
Species richness |
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It includes the species’ way of life and all that affects its survival and reproduction in a community. |
ROLES IN ECOLOGICAL NICHE |
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Can live in various places |
Generalists |
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Can live in one habitat and limited environmental conditions |
Specialists |
