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9. Label the archegonia in Figure 3 below. Figure 3. Marchantia archegonial head l.s. Photo by Carolyn Alling 10. Is the egg cell produced by meiosis or mitosis within an archegonium? Explain Obtain a prepared slide containing mature sporophytes and, using the low power lens of the microscope, find a complete sporophyte. 11. Is the sporophyte haploid or diploid? Note that the sporophyte is attached to the gametophyte by a large foot. This structure grows through the base of the venter into the storage tissue of the archegonial head. 12. What is the function of the foot? 13. Is the sporophyte an "independent" or "dependent" organism? Explain_ The sporophyte also consists of a stalk, or seta, and a capsule, or sporangium (con tout Figure 168 25

9. Label the archegonia in Figure 3 below. Figure 3. Marchantia archegonial head l.s. Photo by Carolyn Alling 10. Is the egg cell produced by meiosis or mitosis within an archegonium? Explain Obtain a prepared slide containing mature sporophytes and, using the low power lens of the microscope, find a complete sporophyte. 11. Is the sporophyte haploid or diploid? Note that the sporophyte is attached to the gametophyte by a large foot. This structure grows through the base of the venter into the storage tissue of the archegonial head. 12. What is the function of the foot? 13. Is the sporophyte an "independent" or "dependent" organism? Explain_ The sporophyte also consists of a stalk, or seta, and a capsule, or sporangium (con tout Figure 168 25

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Sun 9. Label the archegonia in Figure 3 below. Figure 3. Marchantia archegonial head l.s. Photo by Carolyn Alling 10. Is the egg cell produced by meiosis or mitosis within an archegonium? Explain ond Obtain a prepared slide containing mature sporophytes and, using the low power lens of the microscope, find a complete sporophyte. 11. Is the sporophyte haploid or diploid? Note that the sporophyte is attached to the gametophyte by a large foot. This structure grows through the base of the venter into the storage tissue of the archegonial head. 12. What is the function of the foot? 13. Is the sporophyte an "independent" or "dependent" organism? Explain The sporophyte also consists of a stalk, or seta, and a capsule, or sporangium (see text Figure 16-8, page 371). Numerous spores and elongated elaters are enclosed by the sterile jacket layer of the capsule. The elaters have spirally arranged, hygroscopic (moisture absorbing) wall thickenings that are sensitive to very slight changes in humidity. By twisting with changes in humidity, they aid in spore dispersal (see text Figure 16-12, page 375). Note the remnants of the old archegonium, or calyptra. 80
Transcribed Image Text:Sun 9. Label the archegonia in Figure 3 below. Figure 3. Marchantia archegonial head l.s. Photo by Carolyn Alling 10. Is the egg cell produced by meiosis or mitosis within an archegonium? Explain ond Obtain a prepared slide containing mature sporophytes and, using the low power lens of the microscope, find a complete sporophyte. 11. Is the sporophyte haploid or diploid? Note that the sporophyte is attached to the gametophyte by a large foot. This structure grows through the base of the venter into the storage tissue of the archegonial head. 12. What is the function of the foot? 13. Is the sporophyte an "independent" or "dependent" organism? Explain The sporophyte also consists of a stalk, or seta, and a capsule, or sporangium (see text Figure 16-8, page 371). Numerous spores and elongated elaters are enclosed by the sterile jacket layer of the capsule. The elaters have spirally arranged, hygroscopic (moisture absorbing) wall thickenings that are sensitive to very slight changes in humidity. By twisting with changes in humidity, they aid in spore dispersal (see text Figure 16-12, page 375). Note the remnants of the old archegonium, or calyptra. 80
14. Label the capsule and spores in Figure 4 below.otod Figure 4. Marchantia Sporophytes l.s. Photo by Carolyn Alling oqa adgasz vd wesb) sby s azoM 2 eg 21 avisado bus stygomst s niszdo zaisega smo2 zblosuh el bas (mada silbud 26 293 night amsii gridoned to meta
Transcribed Image Text:14. Label the capsule and spores in Figure 4 below.otod Figure 4. Marchantia Sporophytes l.s. Photo by Carolyn Alling oqa adgasz vd wesb) sby s azoM 2 eg 21 avisado bus stygomst s niszdo zaisega smo2 zblosuh el bas (mada silbud 26 293 night amsii gridoned to meta
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