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Definition
| Have naked seeds, include pines and cycads |
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Term
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Definition
| Flowering plants, largest group. Enclosed seed (ovules and seeds are enclosed in a modified leaf called the carpel) |
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Definition
| In flowering plants, its the most of the actual plant mass |
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Definition
| Usually the seeds/reproductive organs in flowering plants. |
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Term
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Definition
| Seed plants produce two types of spores: megasporangia and microsporangia; male and female respectively |
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Definition
| Surrounded by integument, which is made of sporophytic structures to protect the seed. |
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Definition
| Microspores created, mitotically divide to create the pollen grain, which contains sporopllenin. |
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Term
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Definition
| When a pollen grain lands near a female gametophyte; pollen tube digests its way through the sporophyte tissue to the megagametophyte; results in a diploid zygote, which divides to produce an embryonic sporophyte. |
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Term
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Definition
Have tissues from three generations: Seed coat - develops from sporophyte parent(integument)
Female gametophytic tissue from the next generation contains a nutrient supply for developing embryo
Embryo is the new sporophyte generation |
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Term
| Secondary Growth of Plants |
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Definition
| Wood: Proliferated xylem, gives support and allows plants to grow above their competitors for light. |
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Term
| Four major groups of gymnosperms(non flowering plants) |
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Definition
Cycads: 140 species
Ginkgos: 1
Gnetophytes: 90 in 3 genera
Conifers: 600 |
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Term
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Definition
| Modified stem, Megaspores are produced here. |
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Term
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Definition
| Cone like structure, scales are modified leaves, Microspores are produced here(male) |
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Term
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Definition
| Small opening in the integument of the cone; pollen grain enters here |
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Term
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Definition
| Microgametophyte has two male gametes, one combines with egg, other combines with two haploid nuclei of the female gametophyte to form a triploid nucleus, becoming the endosperm |
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Term
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Definition
| Modified leaves protecting the angiosperm seed, provide protection and may interact with pollen to prevent self pollenation. |
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Term
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Definition
Stamens: Microsporangia, consists of filament and anther
Carpels: Megasporangia, form the pistil: stigma, style, and ovary |
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Term
| Petals(corolla) and Sepals(calyx) |
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Definition
| Modified leaves, attract pollinators. Calyx protects the flower bud before it opens. |
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Term
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Definition
| Male/Female plant vs Male and Female Plants |
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Term
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Definition
| Zygote devlops into embryo, embryonic axis becomes stem and root, cotyledons form seed leaves(absorb and digest endosperm, some become photosynthetic. |
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