Agamble_Plant Lab version B-1

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Florida State College at Jacksonville *

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1005L

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Biology

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Feb 20, 2024

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Plant Lab Learning Objectives Seedless Plants • Explain what is meant by “alteration of generations” • Explain the difference between the sporophyte and gametophyte generation in plants. State which generation is haploid and which is diploid • Name the process that makes spores and state if spores are haploid or diploid • Name the process that creates sperm and egg from spores and state if sperm and egg are haploid or diploid • Identify and know the function of the archegonium and the antheridium Seed Plants • Understand the basic difference between gymnosperm and angiosperm life cycles • Identify and know the function of the microscopes and the megaspores • Identify the flower parts and which structures and male and female Part I. Seedless Plants Procedure Access the page “ Reading: Seedless Plants .” Access the Seedless Plants Lecture Slides Background https://openstax.org/details/books/concepts-biology Phylum Bryophyta (Mosses) View the live moss specimens available in the lab. 1. Is the green “leaf like” tissue gametophyte or sporophyte? - The green “ leaf like ” tissue is called gametophyte. 2. Is the stalk that emerges from the green “leaf like” tissue gametophyte or sporophyte? - The stock that emerges from the green “ leaf like ” tissue called sporophyte. View the prepared slide of the archegonium and the antheridium. 3. Is the archegonium male or female? - The archegonium is a female. 4. What cell is produced in the archegonium? - The cells produced in the archegonium is egg cells. 5. Is the cell produced by archegonium haploid or diploid?

- The cell produced is a haploid. 6. Is the antheridium male or female? - Antheridium is a male. 7. What cell is produced in the antheridium? - The cells produced in the antheridium are sperm cells. 8. Is the cell produced by the antheridium haploid or diploid? - The cells produced by the antheridium is haploid. 9. W hat is meant by the idea of “alteration of generations?” - The plant goes back to haploid then to diploid and then back. Part II. Seed Plants Procedure Acc ess the page “ Reading: Seed Plants .” Access the Seed Plants Lecture Slides Background https://openstax.org/details/books/concepts-biology Gymnosperms 1. Name the four phyla within gymnosperms. - Conifer, cycads, ginkgo, geophytes. Observe the conifer leaf. 2. How does the needle-like leaf benefit the conifer? - The needle-like leaves benefit the conifer because they have lower wind resistance and retain water easier. Observe the pine cones. 3. Are pine cones haploid or diploid? - Pine cone is a diploid. 4. Which is wider male or female pine cones? - Female pine cones are wider. View the slide of the pollen (male) pine cone cross section. Find the microspores. 5. Are microspores haploid or diploid? - Microspores are haploids. View the slide of the seed (female) pine cone cross section. Find the megaspores. 6. Are megaspores haploid or diploid? - Megaspores are diploids.

Find the egg on the slide. 7. Is the tissue surrounding the egg haploid or diploid? - Tissue surrounding the eggs is a haploid. 8. Once the egg is fertilized what structure will form? - Once the egg is fertilized the structure will form a zygote. 9. Is the structure haploid or diploid? - The structure is a diploid. 10. How are seeds dispersed through the environment? - The seeds can be dispersed thought the environment by gravity, wind, ballistic, water, and by animals. 11. What cell division process (mitosis or meiosis) do seeds undergo to create a new pine tree? - The cell division process that seeds undergo to create a new pine tree is mitosis. Angiosperms 12. Is the stamen male or female? - Stamen is a male. 13. What part of the flower develops into a fruit? - The part of the flower that develops into a fruit is the ovary.

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