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BIO 240 Cuyamaca College Angiosperm Lab Report

BIO 240 Cuyamaca College Angiosperm Lab Report.

Objectives:Be able to define angiosperm, pistil, stamen, flower, fruit, ovaryUnderstand the major differences between angiosperms and gymnosperms (where microsporangia and ovule located on the sporophyte), double fertilizationIdentify and describe the function of sporophyte and gametophyte generation in angiospermsIdentify the following floral structures in various angiosperms: peduncle, receptacle, pistils (stigma, style, ovary), stamens (filament, anthers, microsporangium), petals, sepalsAngiosperms: 1.Label the parts of the flower below.A.__________________________F. _________________________B.__________________________G. _________________________C.__________________________H. _________________________D.__________________________I. __________________________E.__________________________J. __________________________Angiosperm FlowersBio 240

1.ANSWER: Whichone of these floral structures look more leaflike?(You might need to compare the drawing to a photo from your book or internet.)2.ANSWER: How do the petalsassist in pollination? Look at the examples of different flowers below. Notice the arrangement of the stamens around the pistals.

3.ANSWER: Why do you think there is such a variety of arrangements of stamens and pistals? In what way could this be related to pollinators?Look at the examples of different angiosperm pollen grains:4.ANSWER: What is the purpose for the structure of pollen grains?

A pistil consists of one or more carpels, also called megasporophylls. Label the parts of the pistil being pollinated. A._____________________________B._____________________________C._____________________________D._____________________________5.Look at the cross section of anovary. LABELon the drawing, the ovules withinthe ovary. Note in the cross section the number of compartments or lodicules (LABEL). This number will also tell you the number of carpels.DrawingMicroscope viewA pistil consists of one or more carpels, also called megasporophylls. Label the parts of the pistil being pollinated. A._____________________________B._____________________________C._____________________________D._____________________________5.Look at the cross section of anovary. LABELon the drawing, the ovules withinthe ovary. Note in the cross section the number of compartments or lodicules (LABEL). This number will also tell you the number of carpels.DrawingMicroscope view

6.ANSWER: Describe the different strategy between gymnosperm and angiosperm pollination and fertilization. How are the differences a key to the success of angiosperms?7.Draw angiospermlife cycle withdouble fertilization

8.Compare and Contrast Monocots and DicotsCharacteristicMonocotDicot# of cotyledonsLeaf VenationVascular Bundle ArrangementRoot System# of Floral Parts

BIO 240 Cuyamaca College Angiosperm Lab Report

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