BIS 2C Lecture Notes - Lecture 19: Convergent Evolution, Gynoecium, Double Fertilization
18 Dec 2016
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Document Summary
The female parts are collectively referred to as the carpel(s) A flower is a combination of reproductive and non-reproductive whorls. The carpel and stamen are both derived from modified, folded leaves that protect the sporangia. Megaphyll sporophyll end up with carpel (folded and protected) Flowers are of two types: 1) perfect (has both mommy and daddy parts) Monoecious = one plant has both sexes. Dioecious = only one sex (male or female) Multiple flowers on a single stem is an inflorescence. Ex: umel, compound umbel, spike: imperfect (only mommy parts or only daddy parts) The cell in the top middle = egg (n); surrounded by cells called. Integument = thing around it (eventually becomes seed coat) Anthers have microsporocytes which undergo meiosis to give us tetrad of microspores and undergoes mitosis again to produce pollen (which is the microgametophyte) egg (2 sperms are delivered) Pollen makes it way to the stigma and goes down the style to meet the.
