Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 22.3, Problem 2TC
In each of these photos, is the pictured structure a sporophyte or a gametophyte?
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The gametophyte of Pteridophytes is inconspicuous in comparison to the mosses. They
are also commonly monecious (single house for male and female gamete production). The
photo below shows a whole mount (w.m.) of a fern gametophyte at 4x.
Make a sketch of the specimen and label the following structures: archegonium,
antheridium, mature gametophyte (prothallus), rhizoids
MacB
The gametophyte of Pteridophytes is inconspicuous in comparison to the mosses. They are also
commonly monecious (single house for male and female gamete production). The photo below
shows a whole mount (w.m.) of a fern gametophyte at 4x.
Make a sketch of the specimen and label the following structures: archegonium, antheridium, mature
gametophyte (prothallus), rhizoids
http://botit.botany.wisc.edu/botany_130/diversity/plants/mosses.html
Make a complete moss life cycle with the following phases and structures. Note: download the images of Mnium from this link and arrange them in the exact sequence to make the lifecycle. Lifecycle structures with cell division: Meiosis, fertilization within archegonium, capsule (sporangium), spores (n), protonema (n) (Image), male gametophyte (n) (Image), female gametophyte (n) (Image), antheridia (Image), archegonia (Image), sperm, egg, water, zygote (2n), embryo, young growing sporophyte (2n), mature sporophyte (2n) (Image), rhizoids. You can insert the non-image part, using the textbox and fill out the suitable s text. For symbol, click on the shape option and inter in your lifecycle diagram at the required place
Chapter 22 Solutions
Biology
Ch. 22.1 - describe the features that distinguish plants from...Ch. 22.2 - In stark contrast to the stinking corpse lily and...Ch. 22.2 - describe the probable ancestor of plants?Ch. 22.2 - identify the closest living relatives of plants...Ch. 22.2 - describe the adaptations that equip plants for...Ch. 22.3 - Why are all nonvascular plants short?Ch. 22.3 - In each of these photos, is the pictured structure...Ch. 22.3 - Can you think of some adaptations that help...Ch. 22.3 - What are the advantages and disadvantages of wind...Ch. 22.3 - Which Plant Provide Us with the Most Food?
Ch. 22.3 - The stinking corpse lily harms species it...Ch. 22.3 - Prob. 1CYLCh. 22.3 - describe the major plant taxonomic groups and...Ch. 22.3 - describe the key steps in the life cycles of...Ch. 22.4 - In the initial trials with Argemone mexicana in...Ch. 22.4 - describe some of the effects that plants have on...Ch. 22.4 - Perhaps surprisingly, a parasitic lifestyle is not...Ch. 22 - In an alternation of generations life cycle,...Ch. 22 - Which of the following are not nonvascular plants?...Ch. 22 - Which of the following structures is present in...Ch. 22 - In which of the following is the gametophyte stage...Ch. 22 - Prob. 5MCCh. 22 - Scientists hypothesize that the ancestors of...Ch. 22 - Plant adaptations to life on land include a(n)...Ch. 22 - Seedless vascular plants must reproduce when...Ch. 22 - Three groups of nonvascular plants are __________,...Ch. 22 - What is meant by alternation of generations? What...Ch. 22 - Prob. 2RQCh. 22 - Describe evolutionary trends in the life cycles of...Ch. 22 - From which algal group did green plants probably...Ch. 22 - Prob. 5RQCh. 22 - Prob. 6RQCh. 22 - Prob. 7RQCh. 22 - Prob. 8RQCh. 22 - Prob. 9RQCh. 22 - Prob. 1ACCh. 22 - Prob. 2AC
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- Is the prothallium sporophyte or gametophyte?arrow_forwardWith a neat diagram explain the 7-celled, 8-nucleate nature of the femalegametophytearrow_forwardThe male gametophyte of the moss looks identical to the female from the naked eye, but the photo below (I.s. at 4x and then at 40 x) shows that the tip contains the structures where male gametes are produced.arrow_forward
- What is a gametophyte? How many different types of gametophytes are there in a plant life cycle? What do they look like (as shown)? Do the sporophytes and gametophytes of seed plants ever look like each other?arrow_forwardDo 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_forwardIs gamete producing hiploid gametophyte and spore produce diploid sporophytes?arrow_forward
- Monilophytes and seed plants both have megaphylls, as well as other traits not found in lycophytes. Explain this observation using the Figure in the picture and the concept of descent with modification.arrow_forwardA B C D G E F H a) On the diagram, which labeled structure represents the mature male gametophyte? I b) Which labeled structure represents the female megasporangium, prior to the production of spores? c) On the diagram, which labeled structure represents the immature male gametophyte? F d) Which labeled structure represents the mature female gametophyte? Jarrow_forwardWhat letter in the diagram identifies the sporophyte? Which letter in the diagram indicates the gametophyte? What letters in the diagram indicates the gametes? What letter in the diagram identifies the spores? What is the part of the lifecycle labeled I?arrow_forward
- Is the protonema part of the gametophyte or sporophyte generation?arrow_forwardMarchantia is specifically considered a Liverwort, which are classified under the larger group known as [A]. The structures in the pictures are gametophytes. Provide the sex and specific term used to describe the structure on the left side [B] and on the right side is a/an [C].arrow_forwardWhich of the following lettered structures is the female gametophyte?arrow_forward
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