Biology

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Biology

• Chapter 21/22
• Vascular Plants

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Vascular Plants

• Have vascular tissues
• Longer sporophyte stage

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Vascular Plants

• Club Mosses
• Similar to non-vascular mosses
• Have SPORANGIA reproductive structures that
  produce spores, look like clubs

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Vascular Plants

• Horsetails
• Similar to club moss
• Sporangia form cone-like structures

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Vascular Plants

• Ferns has roots, stems and leaves
• Main stem grows underground RHIZOME

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Vascular Plants

• FRONDS leaves of ferns, clusters of sporangia
  are here
• Reproduction for all three has to be in a moist
  environment

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Seed Bearing Plants

• What is a seed?
• An embryo with a food supply enclosed in a tough
  coat
• Two types gymnosperms and angiosperms

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Seed Bearing Plants

• Gymnosperms 1st seed bearing plants
• Conifers seeds develop on woody scales (form
  cones)
• Reproduction does not have to be in a moist
  environment

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Gymnosperms

• Sperm is enclosed in pollen
• 4 haploid cells leave, 2 disintegrate, leaving
  two attached to a wing

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Gymnosperms

• Redwoods
• Fir
• Pine

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Angiosperms

• Flowering plants
• Produce fruit (contains the seeds)

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Plant Parts

• Male Stamen anther and filament
• Female Pistil- ovary, style, stigma
• Petals
• Sepal for protection

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Plant Parts

• Stamen whole thing
• Anther pollen is produced
• Filament- structure anther is on

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Plant Parts

• Pistil whole thing
• Ovary where eggs are
• Style neck of ovary
• Stigma sticky part on top of style

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Petal
Stigma
Style
Anther
Ovary
Filament
Sepal
Anther
Stamen
Pistil