Question

From the C-fern illustrations that you collected during lab throughout the semester, select the illustrations that best represent the sequential stages of growth of your C-fern; beginning with the germinated spore and ending with the young sporophyte individual. Arrange the illustrations you selected in a sequence that illustrates GRAPHICALLY (do not write sentences or paragraphs to explain the stages) the growth, development and reproduction of your C-fern.

Each illustration of each growth stage will require a concise legend in order to identify what the illustration represents along with the total magnification used to create the drawing. All pertinent structures must be identified with an accurate label and structural ploidy (2n or n) indicated. Also, provide linking words between each stage of development, as necessary, to indicate the process that occurred between the stages (e.g., mitosis, meiosis, fertilization). Be certain that your lines/arrows linking the developmental stages/processes precisely indicate the location in which it occurred with regard to the illustrated structure(s). (For example, the lines representing fertilization must be linking the egg, sperm and zygote.)   When you have completed this entire task, your audience should be able to clearly see and understand the progression of growth of your C-fern gametophytes as well as understand the C-fern life cycle.

In order to receive full credit, you must correctly utilize each of the following terms as part of your life cycle presentation. Also, provide a title for the completed life cycle which represents the processes explained and uses the scientifically correct name of the organism you studied.

NOTE: some of the terms below represent structures that you were not able to see with the magnification/resolving power available with your microscopes. In these cases, insert the term at the stage of the life cycle where it is produced by the fern. (Don’t draw structures that you did not observe.)

• Antheridium
• Archegonium
• Diploid (2n)
• Egg
• Embryo
• Fertilization
• Frond
• Female gametophyte individual
• Germinated spore
• Growing notch
• Haploid (n)
• Immature gametophyte individual
• Immature sporophyte individual
• Male gametophyte individual
• Meiosis
• Mitosis
• Parenchyma tissue
• Remnant spore wall
• Rhizoid
• Sperm
• Sporangium
• Sporocyte
• Tetrad
• Thallus
• Zygote

Answer 1

Sequential stages of growth of C. Ferns along with their ploidy is

Haploid (n) Diploid (2n) Spore Young Antherid Spore dispersal gametophyte MEIOSIS Sporangium Mature gametophyte Archegonium Egg Mature sporophyte sporophyte (2n) Sporangium New Zygotee (2n)FERTILIZATION Sorus Gametophyte Fiddlehead