Plant Circulation and Transport

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Plant Circulation and Transport

• Mycorrhizae
• Root hairs
• Macronutrients for plants
• C, H, O, N, K, Ca, P, Mg, S
• Micronutrients for plants
• Fe, Cl, Cu, Mn, Zn, Mo, B

• Xylem
• Vessel Member
• Tracheids
• Transpiration
• Factors that Affect
• Humidity
• Temperature
• Sunlight
• Wind

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Plant Circulation and Transport

• Phloem
• Sieve-tube members
• Companion cells.
• Phloem loading
• Active transport
• Role of xylem and water
• Source to Sink flow
• Translocation

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Plant Reproduction

• Importance of flowers
• Importance of pollen
• Importance of seeds
• Sepals
• Petals
• Stamen
• Anther
• Filament

• Pistil
• Stigma
• Style
• Ovary
• Pollen must physically fit the stigma for
  pollination to occur. Important for species
  recognition.

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The Flower

• Adaptations
• Coevolution
• UV markings
• Nectaries
• Perfect Flowers
• Imperfect Flowers
• Monoecious
• Diecious

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Angiosperm Reproduction

• Meiosis
• Occurs in anthers and ovaries.
• Forms haploid spores.
• Microspores in the anthers.
• Megaspores in the ovaries.
• These divide by mitosis to form haploid,
  multicellular gametophytes.
• These form embryo sacs and pollen grains.

• Fertilization
• Pollen tube
• Ovule develops into a seed.
• Ovary develops into a fruit.

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Other information concerning plants

• Seed dispersal mechanisms
• Seed coat
• Germination
• Cotyledons
• Vegetative propagation

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Plant Hormones

• Auxins--Promote cell elongation stimulates
  division in the vascular cambium, promotes
  flowering and fruit formation.
• GibberellinsStimulate cell division and
  elongation, inhibit seed formation, stimulate
  flowering and pollen-tube growth, ends dormancy,
  increases fruit size.

• CytokininsPromote cell division in stems
  facilitates healing of wounds, prolongs life of
  leaves, flowers, and fruits.
• Ethylene gasregulates metabolism, promotes fruit
  ripening, regulate shedding of leaves and
  flowers.
• Abscisic AcidInhibits growth, promotes dormancy
  stomate closure.

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Plant Responses

• Photoperiodism
• Phytochrome
• Tropisms
• Phototropisms
• Role of auxins
• Gravitropism
• Positive and negative examples

• Thigmotropism
• Tendrils

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