Lab07Answers - Plant Science 1203L Laboratory 6 Pollination...

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Plant Science 1203L Laboratory 6 - Pollination Name_______________________________ ID #_________________ 1. Below are cross sectional diagrams of the anther of the stamen showing the development of pollen grains. Label the diagrams and then observe an anther under the microscope setup for demonstration. Q1. A fully mature pollen grain would be genetically haploid (N) or diploid (2N)? N Q2. Pollen is the male or female gametophyte? Male Q3. Homework: Name the stages of mitosis (IPMAT) and give a brief diagrammatic description of each. Q4. HOMEWORK: Describe the stages of meiosis and provide a diagrammatic description of the various stages.
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2. Observe the illustration of pollen below. The cell wall of pollen is composed of two layers, a inner layer termed the intine and an outer layer termed the exine (composed of a double layer of sexine and nexine) that surround and protect the generative nucleus and the tube nucleus . The shape or morphology of the pollen outer wall is very characteristic of a particular plant species and has been used by archeologists to determine what plants might have been used by ancient cultures. The illustration to the right shows many pollen grains.
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