BIOLOGY -TEXT
14th Edition
ISBN: 9781260710878
Author: Mader
Publisher: RENT MCG
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Textbook Question
Chapter 23, Problem 4TC
Would you expect the sporophyte generation of a moss or a fern to have more mitotic divisions? Why?
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Which of the following statements about the haplodiplontic life cycle of land plants is/are TRUE?
A During the sporophyte stage, sporangia house diploid mother cells that will eventually undergo meiosis.
B Sperm develop from mitosis in the archegonium.
C Spores grow by mitosis into mature haploid gametophytes.
D The gametophytic stage begins with a diploid spore.
EA and C are both true.
If ferns produce spores, are they a sporophyte or agametophyte? Are they haploid or diploi
Describe two differences between a fern sporophyte and a moss sporophyte.
Are fern spores haploid or diploid? Are the spores produced by meiosis or mitosis? Where are the spores produced?
What is a sporophyte?
A diploid plant that undergoes meiosis
A haploid plant that produces gametes via meiosis
A diploid plant that produces gametes via mitosis
A haploid plant that undergoes mitosis
Chapter 23 Solutions
BIOLOGY -TEXT
Ch. 23.1 - Compare and contrast the traits of charophytes and...Ch. 23.1 - Prob. 2CYPCh. 23.1 - 3. Identify the role of each generation in the...Ch. 23.2 - Prob. 1CYPCh. 23.2 - Prob. 2CYPCh. 23.2 - Prob. 3CYPCh. 23.3 - Prob. 1CYPCh. 23.3 - Prob. 2CYPCh. 23.3 - Prob. 3CYPCh. 23.4 - Prob. 1E.1QC
Ch. 23.4 - Why is coal not considered to be a renewable...Ch. 23.4 - Prob. 1CYPCh. 23.4 - Prob. 2CYPCh. 23.4 - Prob. 3CYPCh. 23.5 - Prob. 1E.1QCCh. 23.5 - Prob. 1E.2QCCh. 23.5 - Prob. 1CYPCh. 23.5 - Prob. 2CYPCh. 23.5 - List the functions of the key structures required...Ch. 23 - Would you expect the sporophyte generation of a...Ch. 23 - What types of environmental stresses are placed on...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Do mosses have an alternation of isomorphic or heteromorphic generations? That is, can you easily tell a moss gametophyte from a moss sporophyte? When we look at leafy green moss plants, what are we seeing—the gametophyte or the sporophyte? In a flowering plant species, would the equivalent stage be the plant or the pollen grains and megagametophytes?arrow_forwardIn ferns, which of these would be formed by meiosis inside a sporangium? haploid spores diploid spores diploid zygote haploid spermarrow_forwardReproductive structures are the critical factors in distinguishing algae from true plants of kingdom Plantae. What is one fundamental difference between reproductive structures in these two groups?arrow_forward
- In animals, meiosis produces gametes (sperm cells and egg cells), but that does not happen in plants. When some of the cells of a sporophyte undergo meiosis, what types of cells are produced? What do they grow into?arrow_forwardAre fern spores haploid or diploid? Are the spores proudced by meiosis or mitosis? Where are the spores produced?arrow_forwardWhich of the following pairs of plant structure has the haploid number ofchromosomes? A. Megaspore mother cell and antipodal cells B. Egg cell and antipodal cells C. Egg cell and endosperms D. Microspore mother cell and antipodal cellsarrow_forward
- 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 (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…arrow_forwardDiscuss the life cycle of the brown algae Laminaria, which shows the alternating of generations.arrow_forwardIs the protonema part of the gametophyte or sporophyte generation?arrow_forward
- Early botanists admired ferns but found their life cycle perplexing. In the 1700s, they learned to propagate ferns by sowing what appeared to be tiny dustlike “seeds” from the undersides of fronds. Despite many attempts, the scientists could not find the pollen source, which they assumed must stimulate these “seeds” to develop. Imagine you could write to one of these botanists. Compose a note that would clear up the confusion.arrow_forwardYou are studying a type of plant known as " rockcress" or Arabidopsis sp. You discover a mutant in which the central cell of the female gametophyte cannot be fertilized. What structure will not form in these mutant plants? Synergids Pollen tube Endosperm Egg cellarrow_forwardWhich of the following is a universal feature of the life cycles of land plants? Genetically identical gametophyte and sporophyte stages Multicellular haploid and diploid gametes Morphologically identical gametophyte and sporophyte stages Alteration of generations between haploid gametophytes and diploid sporophytesarrow_forward
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