BIOLOGY:CONCEPTS &...W/ACCESS (LL)
4th Edition
ISBN: 9781260683752
Author: Hoefnagels
Publisher: MCG
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Chapter 19, Problem 2MCQ
Summary Introduction
Introduction:
The life-cycle in plants is known as alternation of generations. A multicellular haploid stage is altered by the multicellular diploid stage. A mitotic division is seen in spores, which form gametophyte.
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In the alternation of generations in plants, the gametophyte is _______ and produces gametes by _______. a. haploid; mitosis c. haploid; meiosis b. diploid; mitosis d. diploid; meiosis
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?
What is the ploidy of two daughters of a dividing cell of a hornwort’s gametophyte?
Select one:
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aploid
b.
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c.
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Chapter 19 Solutions
BIOLOGY:CONCEPTS &...W/ACCESS (LL)
Ch. 19.1 - Prob. 1MCCh. 19.1 - Prob. 2MCCh. 19.1 - How does vascular tissue adapt plants to land?Ch. 19.1 - Describe the reproductive adaptations of plants.Ch. 19.2 - Describe the three main groups of bryophytes.Ch. 19.2 - Prob. 2MCCh. 19.3 - Describe the four groups of seedless vascular...Ch. 19.3 - Prob. 2MCCh. 19.3 - Prob. 3MCCh. 19.4 - What are the characteristics of gymnosperms?
Ch. 19.4 - What are the four groups of gymnosperms?Ch. 19.4 - Prob. 3MCCh. 19.4 - What happens during and after pollination in...Ch. 19.5 - Prob. 1MCCh. 19.5 - Prob. 2MCCh. 19.5 - Prob. 3MCCh. 19.5 - Prob. 4MCCh. 19.6 - Prob. 1MCCh. 19.6 - What are some alternative hypotheses for why the...Ch. 19 - Which of the following is NOT a similarity between...Ch. 19 - Prob. 2MCQCh. 19 - What conditions did plants face when they moved to...Ch. 19 - Prob. 4MCQCh. 19 - Prob. 5MCQCh. 19 - Which adaptation to land is present in the most...Ch. 19 - Which type of plant may have a gametophyte that is...Ch. 19 - Reproduction in a pine tree is associated with a....Ch. 19 - In comparing the life cycle of an angiosperm to...Ch. 19 - What plant group is correctly matched with an...Ch. 19 - What characteristics do all land plants have in...Ch. 19 - Prob. 2WIOCh. 19 - How are terrestrial habitats different from...Ch. 19 - List the characteristics that distinguish the four...Ch. 19 - Prob. 5WIOCh. 19 - A fern plant can produce as many as 50 million...Ch. 19 - How do the adaptations of gymnosperms and...Ch. 19 - Prob. 8WIOCh. 19 - Describe how the petals, ovary, and ovule of...Ch. 19 - The immature fruit of the opium poppy produces...Ch. 19 - Scientists have studied plant populations that...Ch. 19 - Prob. 12WIOCh. 19 - Prob. 13WIOCh. 19 - Prob. 14WIOCh. 19 - Compare and contrast the life cycles of the four...Ch. 19 - Prob. 17WIOCh. 19 - Prob. 18WIOCh. 19 - What are the pros and cons of pursuing biofuels as...Ch. 19 - Prob. 1PITCh. 19 - Prob. 2PITCh. 19 - Prob. 3PITCh. 19 - Prob. 4PIT
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- Figure 14.19 At what stage does the diploid zygote form? a. When the female cone begins to bud from the tree b. When the sperm nucleus and the egg nucleus fuse c. When the seeds drop from the tree d. When the pollen tube begins to growarrow_forwardWhich type of life cycle has both a haploid and diploid multicellular stage? a. an asexual life cycle b. diploid-dominant c. haploid-dominant d. alternation of generationsarrow_forwardA diploid, multicellular life-cycle stage that gives rise to haploid cells by meiosis is called a ________. a. sporophyte b. gametophyte c. spore d. gametearrow_forward
- . In plants, which of the following are produced by meiosis?(A) haploid gametes(B) diploid gametes(C) haploid spores(D) diploid sporesarrow_forwardCompare what happens to a spore mother cell as it gives rise to a spore with what happens to a spore as it gives rise to a gametophyte. a. The spore mother cell and the spore both go through meiosis. b. The spore mother cell and the spore both go through mitosis. c. The spore mother cell goes through mitosis, and the spore goes through meiosis. d. The spore mother cell goes through meiosis, and the spore goes through mitosis.arrow_forwardWhich 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 plantsarrow_forward
- How does a haplontic plant population maintain genetic diversity? a. Zygotes are produced by random fusion. b. Gametes are created through meiosis. c. Diploid spores undergo independent assortment during mitosis. d. The zygote undergoes meiosis to generate a haploid sporophyte.arrow_forwardOne unique feature of fertilization in flowering plants compared with animals is: A. the process involves double fertilization B. plant sperm are motile C. nuclear fusion does not take place D. the gametes are diploid, not haploid. E. multiple ovules exist in the ovaryarrow_forwardMeiosis of cells in pollen sacs forms haploid______ . a. megaspores c. stamens b. microspores d. sporophytesarrow_forward
- The process of _______________ in flowering plants involves one sperm cell fusing with an egg cell and one sperm cell fusing with two polar nuclei. (a) coevolution (b) germination (c) double fertilization (d) apomixis (e) pollinationarrow_forwardWhich of these is a condition that makes flowers invariably autogamous ? (a) Dioecy (b) Self incompatibility (c) Cleistogamy (d) Xenogamyarrow_forwardThe production of which structure in a flowering plant involves genetic recombination? A. haploid gametes B. haploid spores C. diploid gametes D. diploid sporesarrow_forward
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