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BOTANY 70% material


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Natural Selection does three things
􀂾 Leads to adaptation of population 􀂾 Favorable phenotypes preserved 􀂾 Unfavorable phenotypes eliminated
Evolution can lead to
Sexual reproduction
Group of “reproductively isolated” organisms with a common gene pool
Most angiosperms are in which group?
More than # families of flowering plants exist
Magnolia family and examples
Important ornamentals and source of timber ⬢ Examples: southern magnolia, tuliptree
Walnut family
Provides nuts for food, wood for furniture ⬢ Examples: English walnut, black walnut, pecan
Cactus family
Mostly ornamentals in the US ⬢ Examples: prickly pear, Christmas cactus
Mustard family-- flowers are shaped how?
Important food crops ⬢ Examples: cabbage, broccoli, cauliflower, turnip, mustard 4 petals shaped like a cross
Rose family
Fruits and ornamentals ⬢ Examples: apple, pear, plum, cherry, apricot, peach, strawberry, raspberry, rose
Pea family (legumes)
⬢ Important food crops ⬢ Examples: garden pea, chick pea, green bean, soybean, lima bean, peanut, red clover, alfalfa
Potato family
Food crops and chemicals used as drugs ⬢ Examples: potato, tomato, green pepper, eggplant, petunia, deadly nightshade (belladonna)
Pumpkin family
Food crops ⬢ Examples: pumpkins, melons, squashes, cucumbers, cantaloupe, honeydew, muskmelon, cucumber, watermelon
Sunflower family
One of the largest families of flowering plants ⬢ Examples: chrysanthemums, marigolds, sunflowers, daisies, and some food plants such as lettuce, globe artichokes
sunflower has 2 parts of flowers to it...
Disc floret(bisexual inside dark part) and ray floret (female petal)
Grass family
Most important family of flowering plants from the human standpoint ⬢ Examples: rice, wheat, corn, oats, barley, rye, sugarcane, bamboo
Orchid family
One of the largest families of flowering plants; contains a greater variety of flowers than any other family ⬢ Example: the vanilla orchid
Agave family
Best known for ornamentals ⬢ Examples: century plant, sisal hemp, bowstring hemp, tequila

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