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28 Cards in this Set
- Front
- Back
Whatcharacteristic distinguishes bryophytes from higher plants? |
Xylem and Phloem |
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Define: Thallus |
Plant body that is not differentiated into roots, stems, or leaves |
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Name 3 broad types of bryophytes |
Mosses, hornworts, liverworts |
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What is a rhizoid? |
A rhizoid is what anchors bryophytes to a substrate |
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Name one method of bryophyte asexual reproduction |
Fragmentation |
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Name the male gametangia |
Antheridia |
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Name the female gametangia |
Archegonia |
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What external condition is needed for a bryophyte to reproduce? |
Water |
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What is matrotrophy? |
Nutrition provided by mother |
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Name the short side branch of leaf liverworts that bear antheridia |
Androecia |
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Name 2 characteristics of bryophyte sperm |
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Where are peat bogs found? |
Worldwide |
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How does sphagnum modify it's environment? |
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What is an operculum? |
The "lid" of the capsule of the Sporophyte |
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What is a hyalocyst? |
Large, dead cell that fill with water in Spaghnum |
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What is hydroid? |
Water conducting cells in brydae. They are elongated with inclined cell walls. |
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What is a leptoid? |
Food conducting cells in brydae. They surround the hydroids. |
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What anatomic feature is characteristic of class Bryidae? |
Peristome |
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Where is a hornworts meristem tissue located? |
Between the foot and sporangium. |
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Vascular cambium produces? |
Xylem and Phloem |
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Types of growth in vascular plants? |
Primary growth- Increase in length at tips of stems and roots Secondary growth- thickets stems and roots |
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What is a stele? What types of steles are there? |
A stele is a central, cylinder, tissue inside the roots and stems in vascular plants. Types: Protostele, Siphonstele (seedless, vascular plants), Eustele (seed plants) |
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What is a microphyll and megaphyll? |
Microphyll- Small leaves with only a single strand of vascular tissue (Protostele plants) Megaphyll- More than a single strand of vascular tissue (Siphonstele, Eustele plants) |
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What is a heterospory? |
The production of 2 spores in 2 different sporangia... microspores- male gametophytes produced in microsprangia... megaspores- female gametes produced in megasporangia. |
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What is an ovule? What is a seed? |
An ovule is the structure which develops into a seed. A seed is the embryo-containing megasporangium, unit of dispersal. |
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What does gymnosperm mean? |
Naked seed |
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How does pine pollen achieve pollination? |
Pollination drops collect pollen and send through plant |
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What does angiosperm mean? |
"Vessel" + "Seed" |