Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 45, Problem 3FIB
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Double fertilization in flowering plants occurs when one sperm cell fuses with an egg to form a diploid cell, the ______, and a second sperm fuses with the two nucleiof the central cell of the female gametophyte. This triploid cell will divide mitotically to form a food-storage tissue called the_______ . This food is transferred to the developing plant embryo by structures called_______ .
Plants have a life cycle called_______ . In this type of life cycle, some cells in the multicellular diploid stage undergo_______ cell division to form spores, which divide by________ cell division to form a multicellular haploid stage.
In flowers,the structure that produce male and female gametophytes are called______and____
Chapter 45 Solutions
Biology
Ch. 45.1 - Prob. 1CYLCh. 45.1 - diagram the life cycles of ferns and flowering...Ch. 45.2 - Prob. 1CSCCh. 45.2 - Prob. 1TCCh. 45.2 - Prob. 2TCCh. 45.2 - diagram the structure of a complete flower and...Ch. 45.2 - Prob. 2CYLCh. 45.2 - explain the processes of pollination and double...Ch. 45.3 - Prob. 1HYEWCh. 45.3 - explain how the parts of a flower develop into the...
Ch. 45.3 - describe the differences between monocot and dicot...Ch. 45.4 - The warmth of hot flowers attracts pollinators and...Ch. 45.4 - explain why many seeds undergo dormancy before...Ch. 45.4 - Prob. 2CYLCh. 45.5 - Prob. 1TCCh. 45.5 - Prob. 2TCCh. 45.5 - Prob. 1CYLCh. 45.6 - Prob. 1CSCCh. 45.6 - Prob. 1TCCh. 45.6 - Prob. 1CYLCh. 45.6 - describe how fruit structures aid in seed...Ch. 45.6 - Heat-producing flowers are rare, and many are...Ch. 45 - Prob. 1MCCh. 45 - Prob. 2MCCh. 45 - Prob. 3MCCh. 45 - Which of the following is True? a. Moth-pollinated...Ch. 45 - Prob. 5MCCh. 45 - Prob. 1FIBCh. 45 - In a flowering plant, the male gametophyte is the...Ch. 45 - Prob. 3FIBCh. 45 - Prob. 4FIBCh. 45 - Prob. 5FIBCh. 45 - Diagram the general plant life cycle. Which stages...Ch. 45 - Prob. 2RQCh. 45 - Prob. 3RQCh. 45 - Prob. 4RQCh. 45 - Prob. 5RQCh. 45 - Describe the characteristics you would expect to...Ch. 45 - Prob. 7RQCh. 45 - Describe three mechanisms whereby seed dormancy is...Ch. 45 - Prob. 9RQCh. 45 - Describe three types of fruits and the mechanisms...Ch. 45 - Prob. 1ACCh. 45 - Prob. 2AC
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- In plant life cycles, (a) the first products of meiosis are gametes (b) spores are part of the diploid sporophyte generation (c) the embryo gives rise to a zygote (d) the first stage in the diploid sporophyte generation is the zygote (e) the first stage in the haploid gametophyte generation is the prothallusarrow_forwardThe megaspore in most flowering plants grows into a megagametophyte that has seven cells and eight nuclei. Name and describe the seven cells.arrow_forwardCompare the Venn diagram of sexual reproduction and asexual reproduction in plants. Where in the diagram would you add identical to parent? (Use Photo) Not Gradedarrow_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_forwardIn 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?arrow_forwardUse the following information to answer the next question. The life cycles of some plants contains two alternating generations of adults. The diploid adult is called the sporophyte generation and the haploid adult is the gametophyte generation. The diploid plants of the sporophyte generations produce spores by the process of O amitosis O meiosis O mitosis O binary fissionarrow_forward
- Cite briefly discuss some problems related to plant embryogenesis.arrow_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_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_forward
- The portion of an embryonic axis that above where the cotyledons are attached and below the first pair of miniature leaves is called?arrow_forwardYou are studying a type of plant known as " rockcress" or Arabidopsis sp. You discover a mutant in which the central cell of the female gametophyte cannot be fertilized. What structure will not form in these mutant plants? Synergids Pollen tube Endosperm Egg cellarrow_forwardBriefly describe a generalized plant embryogenesisarrow_forward
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