Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 38, Problem 14TYK
Summary Introduction
Introduction: Self-incompatibility is the mechanism that occurs in flowering plants (
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Which of the following is an advantage of asexual reproduction? a. Cuttings taken from an adult plant show increased resistance to diseases. b. Grafted plants can more successfully endure drought. c. When cuttings or buds are taken from an adult plant or plant parts, the resulting plant will grow into an adult faster than a seedling. d. Asexual reproduction takes advantage of a more diverse gene pool.
Under which of the following conditions would pollen from an S2S5 plant successfully pollinate an S1S5 flower?
a. Using pollen from a carpelate flower to fertilize a staminate flower would be successful.
b. If the plants used gametophytic self-incompatibility, half of the pollen would be successful.
c. If the plants used sporophytic self-incompatibility, half of the pollen would be successful.
d. Pollen from an S2S5 plant can never pollinate an S1S5 flower.
Which of the following is True?a. Ethylene stimulates abscission layers to form.b. Abscisic acid causes abscission layers to form.c. Ethylene is sometimes sprayed on flowers to keep them fresh.d. Abscisic acid stimulates seed germination.
Chapter 38 Solutions
Study Guide for Campbell Biology
Ch. 38 - Identify the flower parts in the following...Ch. 38 - a. Describe the male gametophyte. b. Describe the...Ch. 38 - Label the parts in the following diagrams of a...Ch. 38 - Prob. 4IQCh. 38 - a. List some ways in which fruits aid in seed...Ch. 38 - a. What is an advantage of apomixis? b. What is...Ch. 38 - How are vegetative reproduction and...Ch. 38 - Biofuels are considered carbon neutral, even...Ch. 38 - Draw a diagram of the major events in the life...Ch. 38 - List the advantages and disadvantages of sexual...
Ch. 38 - List some of the potential benefits and dangers of...Ch. 38 - ________ structure from which fruit typically...Ch. 38 - ________ generation that produces spores by...Ch. 38 - Prob. 3TYKFCh. 38 - Prob. 4TYKFCh. 38 - Prob. 5TYKFCh. 38 - Prob. 6TYKFCh. 38 - Prob. 7TYKFCh. 38 - Prob. 8TYKFCh. 38 - Prob. 9TYKFCh. 38 - Prob. 10TYKFCh. 38 - A flower on a dioecious plant is a. complete. b....Ch. 38 - Prob. 2TYKCh. 38 - Double fertilization involves fusion of sperm...Ch. 38 - The terminal cell of an early plant embryo a....Ch. 38 - Prob. 5TYKCh. 38 - Prob. 6TYKCh. 38 - Prob. 7TYKCh. 38 - Which of the following structures protects a bean...Ch. 38 - Prob. 9TYKCh. 38 - Prob. 10TYKCh. 38 - Prob. 11TYKCh. 38 - Which of the following statements is false? a....Ch. 38 - Prob. 13TYKCh. 38 - Prob. 14TYKCh. 38 - Prob. 15TYKCh. 38 - Prob. 16TYKCh. 38 - Which of the following techniques is being...
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- Presence of all of the following factors promotes dormancy of seeds, except a.Phenolics b.Impermeable seed coat c.Immature embryo d.Gibberellinsarrow_forwardRefer to the figure. a. What gene mutation(s) will result in the loss of production of the sepals? b. What gene mutation(s) will result in the loss of production of the petals? c. What gene mutation(s) will result in the loss of production of the stamens? d. What gene mutation(s) will result in the loss of production of the carpels?arrow_forwardFour of the following are steps occur in the earliest stages of seed germination. Choose the fifth and last step: Select one: O a. Intake of water b. Activation of the aleurone layer O c. Cell division d. Increase in cellular respiration e. Mobilization of food reserves for cell divisionarrow_forward
- What is the relationship between pollination and fertilization in flowering plants? Select one: a. Fertilization precedes pollinations. b. If fertilization occurs, pollination would be unnecessary. c. Pollination brings gametophytes together so that fertilization can occur. d. Pollination easily occurs between plants of different species.arrow_forwardAt this stage of embryogenesis, the plant embryo forms eight cells. In Arabidopsis thaliana, it is the beginning of radial patterning that is marked by the tangential divisions of the cells of the embryo proper in the embryo. A. Octant stage B. Dermatogen/Protoderm stage O C. Globular stage D. Heart stagearrow_forwardMention the site of zygote formation in the ovule of a flowering plant. What happens to sepals, petals and stamens after fertilisation? State the fate of zygote, ovule and ovary in these plants.arrow_forward
- Monoecious plants such as corn have either staminate or carpelate flowers. Knowing what you do about the molecular mechanisms of floral development, which of the following might explain the development of single-sex flowers? a. Expression of B-type genes in the presumptive carpel whorl will generate staminate flowers. b. Loss of A-type genes in the presumptive petal whorl will allow C-type and B-type genes to produce stamens instead of petals in that whorl. c. Restricting B-type gene expression to the presumptive petal whorl will generate carpelate flowers. d. All of the choices are correct.arrow_forwardWhat types of flower structures would you expect to see in whorls 1 through 4 of a mutant plant that failed to produce both class A and class B gene products? a. Carpels, stamens, stamens, carpels b. Sepals, sepals, carpels, carpels c. Sepals, sepals, sepals, sepals d. Carpels, carpels, carpels, carpelsarrow_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
- Which of these is a feature not present in seedless plants that have contributed to the success of seed plants on land? a. Seeds have four layers of protective tissue, the seed coat, that improve survival by providing more protection from environmental stresses. b. The reduced gametophytes of seed plants are nurtured by sporophytes and protected from stress, such as drought conditions and UV radiation. c. Seed germination is solely mediated by water during episodes of heavy rain. d. Pollen grains, with walls containing sporopollenin, deter herbivores. Three unknown non-vascular plant species were collected by Biology 3 students. Which characters BEST discriminate them from one another? 1. protonema II. special organelles III. seta IV. calyptra V. capsule VI. stalk a. I,II,III b. I,III,V c. III, IV, V d. II,IV,VIarrow_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_forwardA. What is double fertilization? B. What are the products of double fertilization? C. Explain the following quote “As an individual, the endosperm is unique as it has three ancestors and never leaves any descendants.” What are the three ancestors referred to in this quote? And why endosperm does not leave any descendants?arrow_forward
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