(7) Plant Ntrition and Reproduction

• movement of fluids in plants due to a pressure difference
• ex. transpiration cohesion mechanism

• when the air bubble in xylem causes it to be useless
• happens when its freezing
• secondary growth creates new xylem

where sucrose is being used (transport of phloem sap)

place where phloem sap is being made (transport of phloem sap)

source to sink

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trees do not eat soil, most of their weight is from carbohydrates that come from CO2

prokaryotes (or bacteria)

• ammonifying
• nitrifying
• denitrifying
• nitrogen fixing

breaks down organic material which releases ammonia so that ammonium can be formed

uses ammonium to produce nitrate

takes some of the nitrate and converts it into nitrogen gas

takes nitrogen gas from air, breaks tripple covalent bond to make ammonia

because enzyme nitrogenous cannot function in presence of oxygen

peanuts, beans, alfalpha

swelling on roots

vessicles in in the root nodules that contain one or more prokaryotes

type of bacteria that resides in vessicles of nodules of legumes

mutualistic symbiosis and endosymbiosis

• sporophyte
• dominant

leaves at a particular place ona shoot

• carpel-at base of plant, make up calyx
• stamens-male part of plant
• petals-makes up corolla
• sepals-at base of flower, make up calyx

has all 4 whorls

doesn't have all 4 whorls

flower with stamen and carpel

can be carpellate or staminate

(one house) a single plant has both carpellate and staminate flowers on it

(two houses) individuals contain only male parts while other individuals contain only female parts

microsporocytes undergo meiosis to produce 4 microspores which undergo mitosis produce pollen grain

megasporocytes in the sporangium undergo meiosis to produces 4 megaspores. 3 die and the 1 that lives continues to grow and then divides 3 times to give you eight nuclei