Term
| In addition to seeds, the following are common to all seed plants: (4) |
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Definition
1.Reduced gametophytes
2.Heterospory
3.Ovules
4.Pollen |
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Term
| The gametophytes of seed plants develop within the walls of spores retained within tissues of the parent __________. |
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Definition
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Term
| Megasporangia produce megaspores that give rise to ____________ __________________. |
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Definition
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Term
| Microsporangia produce microspores that give rise to ___________ _______. |
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Definition
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Term
| A layer of sporophyte tissue called ______ envelops and protects the megasporangium. |
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Definition
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Term
| An ovule consists of a megasporangium, megaspore, and one or more protective ________. |
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Definition
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Term
| ________ megaspores have one integument. |
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Definition
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Term
| _____ megaspores usually have two integuments. |
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Definition
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Term
| Microspores develop into _____ _______, which contain the male gametophytes. |
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Definition
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Term
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Definition
| the transfer of pollen to the part of a seed plant containing the ovules |
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Term
| If a pollen grain germinates, it gives rise to a pollen tube that discharges _____ _______ into the female gametophyte within the ovule |
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Definition
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Term
| A seed is a ______ embryo, along with its food supply, packaged in a protective coat |
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Definition
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Term
| Living seed plants can be divided into two clades: |
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Definition
| gymnosperms and angiosperms |
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Term
| The gymnosperms include four phyla: |
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Definition
1.Cycadophyta (cycads)
2.Gingkophyta (one living species: Ginkgo biloba)
3.Gnetophyta (three genera: Gnetum, Ephedra, Welwitschia)
4.Coniferophyta (conifers, such as pine, fir, and redwood |
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Term
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Definition
| next largest group of gymnosperms after the conifers. They have large cones and palmlike leaves. |
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Term
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Definition
| Ginkgo biloba is the only surviving species of this phylum. Important with medical uses. Thought to be extinct but was found in the 1600's. |
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Term
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Definition
| plants in this phylum inhabit arid regions. |
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Term
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Definition
| cone bearing trees, pines and spruce. |
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Term
| Seed cones (stroboli) hold _____ reproductive structures |
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Definition
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Term
| Pollen cones hold _____ reproductive structures |
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Definition
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Term
| Key features of the gymnosperm life cycle: (3) |
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Definition
1.Dominance of the sporophyte generation
2.Development of seeds from fertilized ovules
3.The transfer of sperm to ovules by pollen |
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Term
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Definition
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Term
| The reproductive adaptations of angiosperms include ______ and ________. |
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Definition
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Term
| All angiosperms are classified in a single phylum, __________. |
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Definition
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Term
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Definition
| an angiosperm structure specialized for sexual reproduction |
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Term
| A flower is a specialized shoot with up to four types of modified leaves... |
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Definition
| sepals, petals, stamens,carpels |
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Term
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Definition
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Term
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Definition
| are brightly colored and attract pollinators |
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Term
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Definition
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Term
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Definition
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Term
| A fruit typically consists of a mature _____ but can also include other flower parts |
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Definition
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Term
| Fruits protect ____ and aid in their dispersal |
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Definition
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Term
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Definition
- single flower with several ovaries
ex. blackberry |
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Term
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Definition
- multiple flowers packed closely together
ex. pineapple |
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Term
| The two main groups of angiosperms are ______ and ________. |
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Definition
| monocots and eudicots (dicots) |
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Term
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Definition
| - plants that live two or more years. During cold months woody plants become dormant, and herbaceous plants die back |
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Term
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Definition
| - plants that live for only one growing season |
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Term
| two important relationships in terrestrial ecosystems |
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Definition
| Pollination of flowers by animals and transport of seeds by animals |
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Term
| No group of plants is more important to human survival than ____ plants |
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Definition
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Term
| Most of our food comes from _______. |
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Definition
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Term
Six crops yield 80% of the calories consumed by humans!
those are... |
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Definition
| (wheat, rice, maize, potatoes, cassava, and sweet potatoes) |
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