Term
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Definition
4 phyla naked seeds; no fruit gametophyte generation no flagellated sperm heterospory seeds could devlope because of heterospory seperate male and female gametophyte life cycles |
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Term
| Female Gametophyte of a Gymnosperm |
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Definition
- very little
- never leaves sporophyte
- meiospore is retained
- archegonium is produced
- egg - embryo surrounded by gametophyte and sporophyte tissue
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Term
| Male Gametophyte of a Gymnosperm |
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Definition
gametophyte disperseres sperm produced after pollition (no h20 required for gamete dispersal) |
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Term
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Definition
"baby in a lunch box" baby - embryo - 2n (young sporophyte) lunch - n - gametophyte (endosperm) box - seed coat - 2n - previous sporophyte |
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Term
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Definition
- economic implications
- pulp paper
- lumber
- christmas trees - evergreen
- tallest - redwood
- biggest - gian sequoia
- oldest - bristle cone pine
- pacific yew - taxol (drug)
- pines - pinus spp.
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Term
| Longleaf Pine ( Pinus Palatris) |
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Definition
- phylum coniferophyta
- pine needles
- cones - 2 kinds - male and female
- monoecious
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