Plant Stems Xylem vessels The functions of?xylem?tissue in a plant are: Vascular tissue that?transports?dissolved minerals and water around the plant Structural?support Their cell walls contain?lig...
Plant Cell Structure Plant cells contain most of the organelles found in animal cells, along with a few extra organelles that are only found in plant cells Cell wall Cell walls are formed outside o...
Conservation of Biodiversity When species go extinct it leads to an overall?decrease in biodiversity In recent times many species have already gone extinct, while others are?endangered An endangere...
Classification Taxonomy is the practice of biological classification The phylogenetic classification system enables us to arrange?species?into?groups?based on their?evolutionary origins?and?evoluti...
Reproductive Isolation Organisms that belong to the?same?species?share the?same characteristics?and are able to produce?fertile offspring Reproductive isolation occurs when changes in the?alleles?a...
Hardy-Weinberg Equation Hardy-Weinberg Principle The Hardy-Weinberg principle states that if certain conditions are met, the?allele frequencies of a gene within a population will not change from on...
Natural Selection can lead to Adaptation & Evolution Variation?exists within a species population Variation refers to the?differences between individuals. It can be interspecific (between diffe...
Ecological Niches & Adaptations Niche The place where a species lives within an ecosystem is its?habitat The role that a species plays within its habitat is known as its?niche, including: The?b...
Comparing Biodiversity Between Habitats Once the abundance of different species in an area has been recorded, the results can be used to calculate the?species diversity?for that area Species divers...
