Science7final
Here it is, The 7th grade final exam study guide! Good Luck!
Terms
undefined, object
copy deck
- Stimulus
- Anything an organism reacts to
- Climax community
- An area that has reached a stable stage of ecological succession
- Biomes
- large geographic areas with similar climates and ecosystems
- Permafrost
- Soil layer below the thawed surface in tundra and taiga biomes
- community
- All of the populations in an ecosystem
- Pioneer species
- name given to the first plants to grow in new environments
- Variable
- what is being tested in an experiment
- Biotic factors
- living ecosystem components
- Cuticle
- Waxy layer on stems and leaves
- Hyphae
- Mass of threadlike tubes that make up a fungus
- Guard cells
- In a plant leaf, cells that surround the stomata to open and close them
- Genitics
- study of inheritance
- Climate
- Average weather over time
- Dicot
- Flowering plants with two cotyledons inside their seeds
- Control
- Standard used to compare with the outcome of a test
- Producer
- Organisms that use an outside energy source, such as the Sun, to make energy rich molecules
- Gymnosperms
- vascular plants with no flowers or fruit; produce seeds in cones
- Pseudopods
- Footlike cytoplasm extensions
- Ecological succession
- gradual changes that occur in the types of species that live in an area
- Sex linked gene
- an allele inherited on a sex chromosome
- Latitude
- Distance from the equator
- Cilia
- Threadlike structures extending from the cell membrane of Paramecia
- Biosphere
- The part of earth that supports life
- Probability
- the chance that an event will take place
- Response
- Reaction of an organism to a stimulus
- Water
- Cell fluids are all mostly this compound
- Phenotype
- physical appearance resulting from genotype
- Carrying Capacity
- The largest number of individuals of one species that an ecosystem can support over time
- Homeostasis
- The maintenance of steady conditions inside an organism
- Spore
- Reproductive cell of fungi
- Recombinant DNA
- inserting DNA into bacteria
- Energy
- required for recycling matter
- Sugar
- High energy molecules made from photosynthesis
- Phloem
- Tissue that moves food from leaves to other plant parts
- Algae
- Plantlike protists
- Symbiosis
- Any close relationship between species
- habitat
- place in which an organism lives
- Lichen
- Organisms made of fungus and green algae or a cyanobacteria
- Budding
- Form of reproduction used by yeast in which the organism grows off the side of a parent
- Limiting factor
- anything that restricts the number of individuals in a population
- Cellulose
- composes the cell wall of plants
- Adaptation
- Characteristic that an organism that helps it to survive in its environment
- Population
- All of the organisms in an ecosystem that belong to the same species
- Ecosystem
- All of the organisms living in an area and the nonliving features of their environment
- Secondary succession
- takes place in an area that has soil that was once the home of living organisms
- Niche
- how an organism survives, including its habitat, and how it obtains food and shelter
- Incomplete dominance
- both alleles are expressed in offspring
- Phylogenic inheritance
- more than one set of genes controls a trait
- Angiosperms
- Vascular plants with flowers; produce seeds inside a fruit
- Cambium
- Tissue that produces new xylem and phloem cells
- Rhizoid
- root like filament that holds moss in place
- Genotype
- genetic makeup of an organism
- Cell
- smallest unit of life that carries on life functions
- Vascular plants
- plants with a tube like system of vessels
- Gene therapy
- a normal allele is placed into a virus
- Producers
- The first level of the food chain
- Consumer
- Organisms that cannot make their own energy rich molecules
- Ecology
- The study of interactions among organisms and their environment
- Recessive
- a trait that is hidden
- Elevation
- Distance above sea level
- Fertilizers
- Applied to replace soil nitrogen in crop fields, lawns, and gardens
- Estuary
- where a river meets an ocean
- Organism
- living thing
- Nitrogen fixation
- Changing nitrogen gas to usable nitrogen in the soil
- Development
- Changes that living things undergo as they grow
- Heredity
- passing of traits from one generation to another