What did sepals evolve from? Petals? Stamens? Carpels?
Sepals: Modified leaves
Petals: modified leaves OR stamens that lost sporangia
Stamens: reduced microsporophylls OR branches with terminal sporangia
Carpels: folded megasporophylls
Petals: modified leaves OR stamens that lost sporangia
Stamens: reduced microsporophylls OR branches with terminal sporangia
Carpels: folded megasporophylls
Tags: angiosperms, evolution, flowers, sepals, stamens
Source:
Source:
Describe the evolutionary trends of primitive flowers (floral parts, completeness, organ arrangement, ovary position, symmetry):
Floral parts: many, indefinite #
Completeness: complete
Organ arrangement: spiral
Ovary: superior
Symmetry: radial
Completeness: complete
Organ arrangement: spiral
Ovary: superior
Symmetry: radial
Tags: angiosperms, evolution, flowers, trends
Source:
Source:
Flashcard set info:
Author: zeestree
Main topic: Biology
Topic: Flowers and Fruits
School / Univ.: University of Hawaii at Manoa
City: Honolulu
Published: 20.04.2010
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