Abiotic And Biotic Factors Flashcards
Biotic factors
Living/biological factors
Abiotic factors
Non-living/physical factors
How does light intensity affect organisms?
Light is required in photosynthesis and the greater the light intensity the greater the success of the plant. Plants in low light areas may evolve to have larger leaves.
How does temperature affect organisms?
Temperature affects enzymes which control metabolic reactions. Plants develop more quickly in warmer temperatures as their metabolisms will be faster.
How does moisture level affect organisms?
A lack of water leads to death for most species as water is the main content fir blood plasma. A lack of water causes most plants to wilt because water is required to keep their cells turgid, which keeps plants upright. Water is also required for photosynthesis.
How does soil pH affect organisms?
pH of soil affects biological activity in soil, and the availability of certain minerals. Some plant species grow better in acidic soils such as ferns. Others grow better in alkaline soils such as cucumbers.
