B4.1.7 Biomes as groups of ecosystems with similar communities
B4.1.7 Biomes as groups of ecosystems with similar communities Notes
Convergent Evolution in Biomes
Biomes are large groups of ecosystems that share similar abiotic factors, such as climate, precipitation, and temperature, and contain organisms with comparable adaptations.
Despite being geographically separated, these ecosystems often resemble each other due to their shared environmental challenges.
Organisms in similar biomes demonstrate convergent evolution, where unrelated species develop similar adaptations to thrive in analogous conditions.
Distribution of biomes across the world
Natural Selection and Solutions
Organisms face the same environmental pressures and evolve similar traits as solutions.
Example
Desert plants have evolved adaptations for water conservation and storage.
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Recap question
In a biome characterized by high temperature, very low precipitation, high light intensity, and minimal seasonal variation, which plant adaptation would most directly enhance survival?
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Note
A biome is a large geographical area characterized by specific climate conditions, plant communities, and animal species. Biomes are primarily defined by their abiotic factors, which are non-living environmental conditions.
The two most important abiotic factors that determine biomes are temperature and precipitation. These factors influence the types of plants and animals that can survive in a given area.
Biomes are broader categories than ecosystems; they encompass multiple ecosystems that share similar climate conditions.
DefinitionBiomeA large geographical area with distinct climate conditions and characteristic plant and animal communities.
AnalogyThink of a biome as a "climatic neighborhood" where only certain types of plants and animals can "live" comfortably, just like how certain plants thrive in specific parts of your home.