Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 36, Problem 3TYK
Summary Introduction
Introduction:
The flowering plants are known for having well-defined male and female reproductive systems. The fertilization of the egg takes place when the pollen grains land on a compatible stigma. This pollen then germinates the pollen tube and absorbs moisture. The cell burrows itself towards the ovule through stigma and style. The pollen tube is guided towards the egg cell with the help of chemical cues sent by the synergic cells present close to the egg cell. When the pollen reaches the egg cell, fertilization takes place.
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Which of the following statements regarding plants is false?a. Meiosis within anthers produces spores that develop intopollen.b. Meiosis within ovules produces spores that develop into anembryo sac.c. The male gametophyte is a pollen grain, and the femalegametophyte is an embryo sac.d. Meiosis directly produces sperm and egg cells in plants
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Chapter 36 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 36.1 - What are the two alternating generations of...Ch. 36.1 - Prob. 2SBCh. 36.2 - Prob. 1SBCh. 36.2 - Explain the steps leading to the formation of a...Ch. 36.2 - Trace the development of a female gametophyte,...Ch. 36.3 - Explain the sequence of events in a flowering...Ch. 36.3 - Prob. 2SBCh. 36.3 - Prob. 3SBCh. 36.4 - Prob. 1SBCh. 36.4 - Prob. 2SB
Ch. 36.5 - What is a homeobox gene? Give at least two...Ch. 36.5 - Prob. 2SBCh. 36.5 - Prob. 3SBCh. 36 - In an angiosperm life cycle, sexual reproduction...Ch. 36 - Prob. 2TYKCh. 36 - Prob. 3TYKCh. 36 - From a developmental standpoint, a seed is best...Ch. 36 - Prob. 5TYKCh. 36 - Prob. 6TYKCh. 36 - Prob. 7TYKCh. 36 - Which of the following is not an example of...Ch. 36 - Prob. 9TYKCh. 36 - Prob. 10TYKCh. 36 - Prob. 11TYKCh. 36 - Prob. 12TYKCh. 36 - Prob. 13TYKCh. 36 - Prob. 14TYKCh. 36 - Prob. 1ITDCh. 36 - Prob. 2ITDCh. 36 - Prob. 3ITD
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- In flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microsporesarrow_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_forwardMeiosis occurs within the: A. Endosperm B. Petal C. Ovary D. Ovule E. Stigmaarrow_forward
- Arrange the following in correct developmental sequence : Male gamete, Potential pollen mother cell, sporogenous tissue, Pollen grains, Microspore tetrad.arrow_forwardAll of the following are processes that occur during angiosperm reproductionEXCEPT A. One megaspore degenerate, and the other three divides once to producethe six-celled embryo sac.B. The microspore mother cell undergoes meiosis to produce four haploidmicrospores.C. The megaspore mother cell undergoes meiosis to produce four haploidmegaspores.D. The generative cell forms two sperm cells via mitosis.Sel generatif membentuk dua sel sperma melalui mitoarrow_forwardDefine the following: Inflorescence, Pollination, Germination and Fertilizationarrow_forward
- The 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_forwardIdentify the part of the flower based on the function. a.) Male reproductive part b.) Makes the pollen (male sex cells) c.) Holds up the anther d.) Female reproductive part e.) Top part of the carpel with sticky surface to trap pollen f.) Joins the stigma and the ovary g.) Contains the ovules (female sex cells)arrow_forwardWhich of the following structures in a flower is not directly involved in reproduction? a. the style b. the stamen c. the sepal d. the antherarrow_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) D use photo Not Gradedarrow_forwardSuppose that 100 pollen grains land on a stigma, and 50 mature seeds are formed in the fruit. What does this indicate about the pollination process and success? A) 100% success: 100 pollen grains grew to 50 ovules, two to each, and double fertilization occurred. B) 100% success: Only 50% of the pollen grains germinated, but each produced 2 sperms to complete double fertilization in 50 seeds. C) 50% success: 50 sperm fertilized 50 eggs, and 50 sperm fused with 50 polar nuclei. D) 50% success: 50 sperm fertilized 50 eggs, and 50 sperm fused with 100 polar nuclei. correct answer and explanation why please.arrow_forwardWhich 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.arrow_forward
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