Plants-General information

1. Plants-General information

2. *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

3. 2 categories of plants:refers to presence or absence of ____________-tissue --specialized for the long distance transport of water and solutes through a plant • Nonvascular-mosses,liverworts----more dependent on ample water/no true roots,leaves or stems,but have structures for similar functions--____________ Vascular tissue rhizoids

5. Guard cells • 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

6. 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

7. classification

9. _______________-vascular plants producing seeds and lacking a fruit-eg. Conifers _______________-vascular plants that produce seeds enclosed and protected by fruit gymnosperms angiosperms

10. _________________--angiosperm w/ one cotyledon _________________--- angiosperm w/ 2 cotyledons dicots monocots