Jackie+Juarez+Research

Bio.Chem Research Paper:

Title Page: -Jackie Juarez - Does the amount of light affect the bending of plant stems? -Honors. Biochem. Period 2.[]

Overview Page: -Each plant will bend towards the light, though the ones exposed to little or no light will not bend as much, or not at all. -lima bean plant. -Independent Variable: the amount of light on the plant. -Dependent Variable: the bending of the plant. About Lima Beans: []

Classification: Kingdom: Plantae Order: Fabales Family: Fabaceae or Legumes Subfamily: Faboideae Tribe: Phaseoleae Genus: Phaseoius Species: P. lunatus

[] Cell type, Organization and body plan: -Multicellular -Eukaryote - Plants have three main tissue systems: Dermal, Vascular, Ground. -Plants have two types of organ systems: shoot and root. [] []

Types of metabolism: -Plants have both photosynthesis and respiration -Photosynthesis is used to make their food. Respiration is used to give off oxygen from their leaves. - “OIL RIG” []

Reproduction: -Sexual -The stage of reproduction of a bean plant is called the flowering stage. During the flowering stage, the flower appears and begins to fertilize. After the fertilizing stage, the flower then withers. While the flower begins to wither, the ovaries of the flower grow into bean pods. Finally the flower vanishes when the pedals dry out.-The plant can reproduce as many as half a dozen seeds during the last stage of developing. Once the seeds mature and the pod dries out, the seeds fall onto the ground and the cycle begins again. -The number of offspring relies on the number of seeds that are pollinated. [][] [] Evolution Information: []

Interdependence: -Plants are at the bottom of the food chain, but on top of what is decomposed. -Omnivores and herbivores eat plants. -Plants make their own food. -Plants’ trophic level is number one. -Parasitism, mutualism, commensalism. [] Homeostasis: A. Habitat: -Lima beans were first discovered in Lima, Peru. (6,000 B.C) -Can be found growing anywhere: North and Central America, Africa, Europe and Asia. B. Internal Environment: -Soil Temp., has to be 60 degrees Fahrenheit, no less than 50. -Grows best in crumbly, well-draining soil. Maintain damp, beans rot in wet, soggy soils. -PH range for soil should be 6.0 – 7.0 -Soil needs a rhizobia bacterium to help lima beans grow. -Cold soil can cause the lima bean seeds not to germinate properly. C. External Environment: -Grow best in full sun -Warm conditions -No shady areas [] []

Independent Variable: -The amount of light on the plant -Phototropism -Phototropism / Photosynthesis -Phototropism: Charles Darwin and his son Francis discovered (in 1880) Photosynthesis: - “Joseph Priestly discovered that when he isolated a volume of air under an inverted jar, and burned a candle in it, the candle would burn out very quickly, much before it ran out of wax. He further discovered that a mouse could similarly "injure" air. He then showed that the air that had been "injured" by the candle and the mouse could be restored by a plant. - Jan Ingenhousz repeated Priestly's experiments. (In 1778) He discovered that it was the influence of sun and light on the plant that could cause it to rescue a mouse in a matter of hours.- Jean Senebier showed that CO2 was the "fixed" or "injured" air and that it was taken up by plants in photosynthesis. (In 1796) Soon afterwards, Theodore de Saussure showed that the increase in mass of the plant as it grows could not be due only to uptake of CO2, but also to the incorporation of water.” [] [] Dependent Variable: -Bending of the plant -The amount of light affects how the bean plant bends -A projector

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