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| -in plants & some algae that have alternation of generations, the multicellular haploid form that produces haploid gametes by mitosis. These haploid gametes unite & develop into sporophytes |
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- In plants and some algae that have alternation of generations, the multicellular Diploid form that results from the union of gametes.
-produces haploid spores by meiosis that develop into gametophytes |
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Term
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Definition
| -A spore from a heterosporous plant species that develops into a male gametophyte |
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Definition
| -Is a reproductive cell that can develop into a haploid organism w/o fusing with another celll |
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Definition
| -A spore from a a heterosporous plant species that develops into a female gametophyte |
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| -A feature that distinguishes early land plants from their algal ancestors was the production of gametes with in the multicellular organs |
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Archegonia
-singular, archegonium |
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Definition
Antheridia
-singular, antheridium |
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Germinating moss spores, produce a mass of green, branched one-cell-thick filaments
-has large surface area that enhances absorption of water & minerals |
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Definition
| -Cluster of sporangia on a fern sporophyll. May be arranged in various patterns such as parallel lines or dots, which are used in fern identification |
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Definition
| Long tubular single cell or filament of cels that anchors bryophytes (moss,liverwort,or hornwort) to the ground. Not compozed of tissues, lack specialized conducting cells, & have no primary role in water & mineral absorption |
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Definition
| In lycophytes (club mosses, spike mosses, & quillworts) a small leaf w/ a single unbranched vein |
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Definition
| Leaf with a highly branched vascular system, it is a characteristic of the vast majority of vascular plants |
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Definition
| cells that are joined into tubes that transport water and nutrients throughout the plant body |
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Definition
| Plants that have vascular tissues |
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Definition
All non-vascular plants (liverworts,mosses, hornworts)
-do not form a monophyletic group (clade) |
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Definition
-club mosses & their relatives
- lack seeds |
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-ferns and relatives
- Lack seeds |
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Definition
-compose of the Lycophytes & Pterophytes
because they lack seeds |
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Definition
| conducts most of the water and minerals in seedless plants, includes tracheids |
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Term
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Definition
| - is a major component of deposits of partially decayed organic material |
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Definition
- long tapered water conducting cell found in the xylem of nearly all vascular plants
- Functioning tracheids are no longer living |
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Definition
- modified leaves that bear sporangia & vary greatly in structure
- fern sporophylls produce sporangia known as sori
- in lycophytes and most gymnosperms, groups of sporophylls form cone-like structures called strobili |
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Term
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Definition
| - cluster of sporophylls known commonly as a cone, found in most gymnosperms & other seedless vascular plants |
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Definition
| - Most seedless vascular plant species are homosporous, they have a type of sporangium that produces one type of spore, which develops into a bisexual gametophyte in most fern. (can be male or female) |
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Term
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Definition
- A species that has two types of sporangia and produces 2 kinds of spores, the megasporangium on the megasporophylls produce megaspores which make the female gametophyte
and the microsporangia which contain the microspores whic develop into the male gametophytes. |
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Definition
| - organs that absorb water & nutrients from the soil and also anchor vascular plants while allowing the shoot to grow taller |
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Definition
| - The water conducting cells in vascular plants cell walls are strengthen by this polymer |
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Definition
| - This tissue has cells arranged into tubes that distribute sugars, amino acids, & other organic products |
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Definition
| - main photosynthetic organ of vacular plants |
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Definition
- "naked" seeds
- seeds are not in enclosed chambers
- ex: conifers (cone forming) |
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-flowers, fruit
- seeds develop inside chambers called ovaries which originate within flowers and mature into fruits
- nearly 90% of all plants are angiosperms |
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Definition
- the epidermis in many species of plants has this covering
- consists of wax and other polymers |
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Definition
- when a seta (stalk) conducts these materials to the sporangium which is also called a capsule, which uses them to produce spores by meiosis
- one capsule can generate up to 50 million spores |
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