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18 Cards in this Set
- Front
- Back
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What portion of land plants do Angiosperms make up?
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They are the largest group and make up 95% of land plant diversity
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What is the major evolutionary innovation of Angiosperms?
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The development of a flower (from a modified shoot with modified stems and leaves).
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What is the dominant generation in Angiosperms?
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Sporophyte.
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What is an annual?
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A plant that lives for less than a year?
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What is a perennial?
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A plant that can live for hundreds of years.
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What is the major cause of floral induction?
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Photoperiod, or length of day.
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What do these environmental cues do?
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Increase the chance of many individuals of one species flowering simultaneously, increasing the odds of pollination by another individual.
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Is pollen the male or female gametophyte?
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Male.
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Two sperm nuclei serve what purpose?
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One sperm nucleus will fertilize the egg cell, and the other sperm nucleus will travel farther into the cell to fertilize the two plar nuclei of the femal gametophyte.
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What is the two fertilization events called?
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Double fertilization.
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Flowers that have all four whorls are referred to as ____?
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Complete.
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If at least one whorl has been lost, the flower is ____?
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Incomplete.
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Flowers that have both androecial and gynoecial parts are referred to as ____?
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Perfect.
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Flowers that have only male or female parts are ____ and are referred to as either ____ or ____.
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Imperfect, staminate, pistillate.
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Plants that have both staminate and pistillate flowers on one individual are called ____.
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Monoecious.
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Plants that have either staminate OR pistillate flowers on one individula are called ____.
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Dioecious.
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Monocot Angiosperms have parts in multiples of ____.
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3
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Eudicot Angiosperms have parts in multiples of ____ and ____.
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3 and 5.
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