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15 Cards in this Set
- Front
- Back
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Male gametophytes (microgametophytes) in seed plants are called...
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Pollen grains
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Female gametophytes (megagametophytes) develops within the...
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megasporangium
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Integument
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Sporophyte tissue which is the location of development
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Testa
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Seed coat diploid
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Ovule
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Becomes the seed
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Microstrobilis
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Often called the pollen cone
Produced in large numbers Produces copious amounts of wind-borne microgametophytes (pollen grains) that form yellow dust-like clouds as they leave the strobilus |
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Mature microgametophytes each produce..
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Two sperm nuclei (from generative cell nucleus)
One Tube cell nucleus (which will grow into a pollen tube after contacting female gametophyte) One prothallial cell (provides structural support for microgametophyte) |
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Sperm nuclei
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2 are produced and only one makes it to ovule (egg) and one is wasted
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Tube cell
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grows into pollen tube after contacting female gametophyte
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Prothallial cell
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Provides structural support for gametophyte
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Megastrobilus
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Ovulate or seed cone
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Bract
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In the Megastrobilus (pine cone) acts as protection for the ovule connected to the ovuliferous scale
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Ovuliferous Scale
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Wing like structure connected to the ovule (seed)
Extends dispersal range |
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Micropyle
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Opening where tube cell enters
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Parts of the seed
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Female gametophyte
cotyledon- leaves Hypocotyl- stems Radicle- roots |
