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21 Cards in this Set
- Front
- Back
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Gymnosperm |
Refers to the exposed nature of the seeds which produced on the surface of sporophylls or similar structures instead of being enclosed within a fruit as they generally are in the flowering plants. |
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Gymnos |
Meaning naked |
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Sperma |
A seed |
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nucellus |
The female gametophyte is produced inside an ovule that contains a fleshy tissue |
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Phylum Pinophyta |
Conifers |
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Phylum Pinophyta |
These members bear distinct strobili and have leaves that are needlelike and arranged in clusters of up to five leaves each |
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Phylum Gingkophyta |
Gingko |
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Phylum Gingkophyta |
Notched, broad, fan shaped leaves with veins that fork evenly are distinct among Gingkos. |
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Phylum Cycadophyta |
Cycads |
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Phylum Cycadophyta |
These slow-growing plants have the appearance of a cross between a tree fern and a palm but are not directly related to either group |
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Phylum Gnetophyta |
Gnetophytes |
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Phylum Gnetophyta |
A unique characteristics of gnetophytes is the presence of vessels and tracheids in the xylem |
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Pinus |
The largest genus of conifers |
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Fascicle |
Forms a cylindrical rod if the leaves are held together. |
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Hypodermis |
Consisting of one to several layers of thick-walled cells. |
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Resin canals |
Consist of tubes lined with special cells that secrete resin |
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Soft conifer wood |
Absence of thicked walled cells. |
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Resin |
Aromatic and antiseptic and prevents the development of fungi. |
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Mycorehizal fungi |
Associated with the roots of most conifers. |
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Pollen Cones |
Consist of papery or membranous scales arranged in a spiral or in whorls around the axis. |
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Microsporangia |
Develop in pairs toward the bases of the scales. |
