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).

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).

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter37: Reproduction In Flowering Plants

Section: Chapter Questions

Problem 12TYU

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