Mastering Biology with Pearson eText -- Standalone Access Card -- for Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321833143
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 38.1, Problem 3CC
Summary Introduction
To explain: Evolution of long styles in most of the flowering plants.
Concept introduction: Style is a long, slender stalk found within the flower that connects the stigma and ovary. Stigma is a sticky platform at the top of the style where pollen are deposited and ovary is present at the bottom of stigma which contains the egg cells and support the cells that is required for reproduction.
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O Time and expense to grow the pollen tube versus cost of maintaining the flower on the tree
And some plants as stigma becomes receptive to Polin able to facilitate a pollen tube at a different time from when the anthers ripen. How would this affect the plant reproductive strategy why would this increase diversity in the plants offspring?
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Chapter 38 Solutions
Mastering Biology with Pearson eText -- Standalone Access Card -- for Campbell Biology (10th Edition)
Ch. 38.1 - Distinguish between pollination and fertilization.Ch. 38.1 - Prob. 2CCCh. 38.1 - Prob. 3CCCh. 38.1 - Prob. 4CCCh. 38.2 - What are three ways that flowering plants avoid...Ch. 38.2 - Prob. 2CCCh. 38.2 - Prob. 3CCCh. 38.3 - Compare traditional plant-breeding methods with...Ch. 38.3 - Why does Bt maize have less fumonisin than non-GM...Ch. 38.3 - WHAT IF? In a few species, chloroplast genes are...
Ch. 38 - What changes occur to the four types of floral...Ch. 38 - Prob. 38.2CRCh. 38 - Prob. 38.3CRCh. 38 - A fruit is (A) a mature ovary. (B) a mature ovule....Ch. 38 - Prob. 2TYUCh. 38 - Prob. 3TYUCh. 38 - Prob. 4TYUCh. 38 - Prob. 5TYUCh. 38 - A small flower with green petals is most likely...Ch. 38 - The black dots that cover strawberries are...Ch. 38 - DRAW IT Draw and label the parts of a flower.Ch. 38 - Prob. 9TYUCh. 38 - Prob. 10TYUCh. 38 - SCIENCE, TECHNOLOGY, AND SOCIETY Humans have...Ch. 38 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 38 - Prob. 13TYU
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- Discuss Concepts Compare the size, anatomical complexity, and degree of independence of a Douglas fir female gametophyte and a dogwood female gametophyte. Which one is the most protected from the external environment? Which trend(s) in plant evolution does your work on this question bring to mind?arrow_forwardExplain the sequence of events in a flowering plant that begins with formation of a pollen tube and culminates with the formation of a diploid zygote and the 3n cell that will give rise to endosperm in a seed.arrow_forwardDouble fertilization in flowering plants occurs by two sperms that fertilize: * 1p O polar nuclei and egg cell. egg cell and synergid cell none is correct two egg cells. egg cell and endosperm. rotic cells it consists ofarrow_forward
- Which adaptation allows plants to accomplish fertilization without living in a wet habitat? O alternation of generations O vascular tissue O pollen O flowers & fruits seedsarrow_forwardwhat are the flaws ? Plants reproduce in a pattern known as alternation of generations. A haploid gametophyte produces gametes through mitosis. The gametes fuse to form a zygote, which then grows into a diploid sporophyte. The sporophyte produces spores through meiosis, which then grow into a gametophyte and start the process over. Flowers are how angiosperms reproduce. A whorl of sepals (corolla) is at the base of the flower, followed by a whorl of petals (calyx). Inside the flower is a female organ known as a carpel and it is made of a stigma, style, and ovary. The male organ is the stamen and it is made of an anther and filament. Pollen being transferred to the style is known as pollination. Once the pollen travels down the style and reaches the egg, fertilization happens when sperm meets egg. Then, the fertilized egg and surrounding tissue develops into a seed. A seed is protected by a seed coat and contains endosperm and an embryo. The endosperm grows into a new plant while…arrow_forwardINTERPRET DATA Flower parts are arranged in four concentric circles: sepals, petals, stamens, and carpel. According to the ABC model of floral organ development in Arabidopsis, class A genes are needed to specify sepals, the A and B genes to specify petals, the B and C genes to specify stamens, and class C genes to specify the carpel. If a mutation occurs in one of the B genes, rendering it inactive, what will the resulting flowers consist of?arrow_forward
- Compare the Venn diagram of sexual reproduction and asexual reproduction in plants. Where in the diagram would you add identical to parent A)a B)b C)c D)darrow_forwardDuring double fertilization, one sperm will unite with the egg, forming a zygote. As mentioned in the lecture, a generative cell divides to form two sperm. How is the second sperm used during the process of double fertilization? 00 00 It fertilizes the flower by landing directly on the stigma, which is the sticky surface found above a flower's style and ovary. This depends on the type of plant. Land plants will allocate the sperm that is not united with the egg to the formation of different tissues through mitosis and cytokinesis. It forms a triploid cell by fusing with polar nuclei. This cell then divides and develops endosperm tissue. Since it was not the sperm to fuse with the polar nuclei, the sperm cell will degenerate.arrow_forwardEXPERIMENT 4: INDUCTION OF CALLUS SOMATIC EMBRYOGENESIS OF HAPLOID PLANTS Objective: To prepare anther as a source of explant To induce callus somatic embryogenesis of haploid plants Procedure: Cut off the buds and sort them into 3 developmental stages based on length of buds Surface sterilize the buds in 70% ethanol for 2-3 minutes, making sure the entire bud is immersed in the alcohol. Drain off excess alcohol from the buds and aseptically excise the anthers from each bud. Remove the filaments and culture the anther on one of the agar media provided. Label the stage of development of the bud on each petri dish as the anthers are cultured. Seal the Petri dishes with parafilm. Incubate in the dark at 26 to 28ºC for 4 to 8 weeks or until small plants can be seen growing out of the anthers. Then transfer to diffuse light. Record the results of the experiment in table form and submit the report. Observation: The culture was contaminated after 8 weeks of incubation…arrow_forward
- Arrange the following flower and fruit development processes in order. (1st step to 5th step)The microspore mother cell produces haploid microspores. => stepThe flower produces pollen grains that will land on the stigma. => StepThe tube cell forms the pollen tube, anchoring on the synergid. => StepFirst sperm will fertilize the egg to form the zygote (becoming the embryo later on). => StepThe ovary wall enlarges forming the pericarp. => Steparrow_forwardBiosynthesis of nectar and nutrient-rich pollen is energetically very expensive for a plant. Yet, plants funnel large amounts of energy into animal pollination. What are the evolutionary advantages that offset the cost of attracting animal pollinators?arrow_forwardThe drooping, bell-like flower Aquilegia canadensis is adapted for cross-pollination. However, if the plant has not been pollinated previously, self-pollination can occur. However, if cross pollination occurs after self-pollination takes place, the pollen from cross pollination reaches the style before the pollen from self-pollination. Using course concepts and vocabulary 1) Provide a reasoning for this phenomenon. 2) Would this adaptation for reproduction be beneficial for the plant?arrow_forward
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