Sporangia Sporophyll Cone axis (A) (B) (C) Courtesy of Dr. Knut Norstog. Used with permission by Paul Norstog FIGURE 22-27 (A) Pollen cone, more than 30 cm long, in Cycas circinnalis. It is a simple cone, with one axis that bears microsporophylls. (B) Microsporophylls in cycads may bear many microsporangia. (C) Sperm cells of cycads have hundreds of flagella and must swim to the egg cell. Zamia (×165).

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Q: You take a walk in Forest Park (Portland, OR) and see a sword fern growing along the trail. You are…

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A: Bryophytes:  Bryophytes are a group of non-vascular plants that include mosses, liverworts, and…

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A: Archaeopteris was closely related to seed plants.

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A: Answer  Spirogyra diagram labelling

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Embryology