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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Do any seed plants have flagella? Do their sperm cells have flagella? Look at the figure.
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