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7th Science - Ch. 8 "Plant Processes and Reproduction"

Terms in this set (20)

cellular respiration
series of chemical reactions that convert the energy in food molecules into ATP
energy
usable power
photosynthesis
series of chemical reactions that convert light energy, water, and carbon dioxide into glucose and give off oxygen
photoperiodism
plant's response to the number of hours of darkness in its environment
plant hormone
substance that acts as a chemical messenger within plants
stimulus
any change in the environment that causes organisms to respond
tropism
response that results in plant growth toward or away from a stimulus
alternation of generations
occurs when the life cycle of an organism
alternates between diploid and haploid stages
embryo
immature diploid plant that develops from the zygote
fruit
forms from an ovary and sometimes other parts of the flower and contains one or more seeds
generation
haploid and diploid stages in the life cycle of a plant
mitosis
process during which a nucleus and its contents divide
ovary
structure found at the base of the style that contains one or more ovules
ovule
female reproductive structure of a seed plant where the haploid egg develops
pistil
female reproductive organ of a flower
pollen grain
structure that forms from tissue in the male reproductive structure of a seed plant and
produces sperm cells
pollination
process that occurs when pollen grains land on a female reproductive structure of a plant that is the same species as the plant that produced the pollen grains
seed
structure made up of an embryo, its food supply, and a protective covering
spore
haploid generation of a plant; a daughter cell produced from a haploid structure
stamen
the male reproductive organ of a flower
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