Angiosperm reproduction

Angiosperm reproduction - Mar. 26, 2007 Evolution of...

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Mar. 26, 2007 Evolution of flowers and fruits Readings: Angiosperm reproduction and life cycle fruits seed dispersal See p. 586 The female and male structures that produce the gametophyte are different. Fig. 29.7 flow e rs a n d fru its One obvious evolutionary change has been in the size of the structures (flowers)
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Flower Unique to angiosperms A structure functions in sexual reproduction derived from a short stem with up to 4 sets of modified leaves Fig. 30.7 Male Female All these structures are modified leaves!
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Protect flower bud Advertisement! These are spores (male gametophytes). they must leave the stamen and find their way to the female structure in order to fertilize the egg. The female gametophyte stays in here… Angiosperm reproduction simplified Fig. 38.2 Double fertilization Why evolve double fertilization? Possibly avoids the waste of valuable resources?
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This note was uploaded on 04/24/2008 for the course BIOL 102 taught by Professor Baker/robertson during the Fall '08 term at Clark University.

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Angiosperm reproduction - Mar. 26, 2007 Evolution of...

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