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Transcript
Plants-General information *Plants probably evolved from algae. *There is an alternation of generations-meaning 2 phases in life cycle. *1st land plants had to be able to survive harsh conditions-thus they developed a ____________________ -waxy,waterproof layer that coats the parts of plant exposed to air--helps keep it from drying out Cuticle 2 categories of plants:refers to presence or absence of ____________-tissue -specialized for the long distance transport of water and solutes through a plant Nonvascularmosses,liverworts---more dependent on ample water/no true roots,leaves or stems,but have structures for similar functions-____________ Vascular tissue rhizoids Vascular plants - 90 % of modern plants---absorb water through roots---therefore can inhabit dryer areas than nonvascular -________________control the size of pores on plants and balance the movement of CO2 into leaf w/outgoing water Guard cells Reproduction,in general Vascular plants-spores or _______-protective structure that contain a plant embryo and stored food-results from sexual reproduction and form after sperm and egg unite ---_________structure that develops in plants w/flowers and contains the seeds --wind,animals help diperse seed as well as “wing-like structures on seeds seed fruit classification _______________-vascular plants producing seeds and lacking a fruit-eg. Conifers _______________-vascular plants that produce seeds enclosed and protected by fruit gymnosperms angiosperms _________________--angiosperm w/ one cotyledon _________________--- angiosperm w/ 2 cotyledons dicots monocots
