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Unit 3 agriscience

QuestionAnswer
Dichotomous key How to use a dichotomous key to identity organisms
Dichotomous key Characteristics wings,legs,scales,etc
Plant parts and functions Leaves, roots, stems, flowers, fruit, seeds
Adventitious roots Appear above ground, helps plants climb/spread (Virginia creeper, poison ivy)
Taproots Grow straight down, thick and heavy (carrots, beets, radishes)
Tap root advantage Survive droughts
Taproot disadvantage Not stabilizing to soil
Fibrous roots Thin, hairlike,shallow,spread sideways (grasses, corn)
Fibrous advantage Stabilize soil
Fibrous disadvantage Dry out quickly
Woody stems Tough,covered with bark, survive winter
Herbaceous stems Succulent/soft, usually green, cannot survive winter
Modified stems: bulbs Shortened stems with scales (onions)
Modified stems: corms Thickened, compact, fleshy (gladiola)
Modified stems: rhizomes Thick stems below ground, give rise to new plants (iris)
Modified stems: tubers Thickened underground stems that store carbohydrates (potatoes)
Plant classification Vascular vs. Non vascular plant, gymnosperms vs. Angiosperms, monocots vs. Dicots
Plant life cycles Perennial plants, annual plants, possibly biennial plants
Created by: user-2013436
 

 



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