Biology3 Lab6

composed of all populations within a defined area

composed of all members of the same species within a defined area

composed of similar organisms which are capable of interbreeding to produce fertile offspring

the entire living space on earth

composed of all the living and non-living things within a defined area

composed of similar ecosystems

non-living parts of the environment [temperature, wind, rain]

an organism capable of otaining energy from sunlight or inorganic molecules

organisms which must obtain their energy from organic molecules produced by other organisms

• epidermis: protective layer of cells
• cortex: contains cells for storage [parenchyma cells]
• pith: contains cells for storage [parenchyma cells]
• xylem: transport water
• phloem: transport photosynthetic products

• petals: attract pollinators
• stigma: receives pollen
• anther: produces pollen grains which contain sperm cells
• style: passage way for pollen tube to ovary
• ovule: where fertilized pollen develops into seed
• sepal: protects flower bud
• stem: holds the flower parts

• a relationship between different species
• mutualism: both members benefit "+""+"
• commensalism: one member benefits and the othe receives no benefit or harm "+""0"
• parasitism: one member benefits and the other member is harmed "+""-"