science plants Flashcards
protist
an organism that belongs to the kingdom protista
heterotroph
an organism that gets food by eating other organisms or their byproducts and that cannot make organic compounds from inorganic materials
eukaryote
an organism consisting of a cell in which the genetic material in DNA in the form of chromosomes contained within a distinct nucleus
decomposer
an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients
funngi
an organism whose cells have nuclei rigid cell walls and no chlorophyll and that belongs to the kingdom fungi
spore
a reproductive cell or multi cellular structure that is a resistant to stressful environmental conditions and that can develop into an adult without fusing with another cell
lichen
a mass of fungal and algal cells that grow together in a symbiotic relationship and that are usually found on rocks or trees
nonvascular plant
the three groups of plants that lack specialized conducting tissues and true roots stems and leaves
vascular plant
a plant that has specialized tissues that conduct materials from one part of the plant to another
gymnosperm
a woody vascular seed plant whose seeds are not enclosed by an ovary or fruit
angiosperm
a flowering plant that produces seeds within a fruit
photosynthesis
the process by which plants algae and some bacteria use sunlight carbon dioxide and water to make food
cellular respiration
the process by which cells use oxygen to produce energy from food
transpiration
the process by which plants release water vapor into the air through stomata also the release of water vapor into the air by other organisms
tropism
growth of all or part of an organism in response to an external stimulus such as light
