Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
4th Edition
ISBN: 9781319154639
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Chapter 20, Problem 2MC
Summary Introduction
Introduction:
Two fusion events occur in double fertilization.
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Pollen tube
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Which part of this angiosperm egg will become the endosperm?
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Which statement below is correct regarding the formation of the endosperm in angiosperms?
O the endosperm is formed from the female gametophyte and is haploid
O a single sperm nucleus fertilizes the egg nucleus to become the diploid zygote
O a sperm nucleus forms both the zygote and the endosperm through double fertilization
O a second sperm nucleus fuses with the two polar nuclei of the egg sac
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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 mito
Chapter 20 Solutions
Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- C. For numbers 21 to 24, match the parts of the flower with what they will develop into after fertilization. A. Endosperm of the seed B. Plant embryo C. Fleshy fruit that can be D. Whole seed E. Seed coat eaten 21. Ovule 23. Polar Nuclei 22. Ovary 24. Eggarrow_forwardVegetative propagation in liverworts is possible because of propagules known as gemmae. Select one: True False Where would you most likely find the megasporangium of an angiosperm? a. Within an ovule contained within an ovary of a flower b. In the style of a flower c. Enclosed in the stigma of a flower d. Packed into pollen sacs within the anthers found on a stamen Which of the following plant structures is NOT matched correctly to its function? a. Stomata allow gas transfer b. Tracheids allow the movement of water and minerals c. Cuticle prevents desiccation d. Plasmodesmata - form a supportive meshwork which acts as a cellular exoskeletonarrow_forwardAnswer the following question: What is meant by “double fertilization”? What features of seeds and fruits have enabled angiosperms to become so widespread?arrow_forward
- Answer the following questions: What advantages do flowers give angiosperms over gymnosperms? Describe a probable method for dispersal of each fruit (apple, banana, and orange). What are the major parts (and their functions) of a sunflower?arrow_forwardMeiosis occurs within the: A. Endosperm B. Petal C. Ovary D. Ovule E. Stigmaarrow_forwardIn a conifer (Gymnosperm): Trees in most species are either male or female (dioecious). O b. Wind disperses both the pollen and the seeds. O c. The seeds are enclosed in a fruit, produced by the ovary O d. Male cones are much larger than female cones. e. Each cone on the tree has both male and female gametophytes.arrow_forward
- In a flower after fertilization, the following tissues are diploid: a. carpel, integuments, and megaspore mother cell. b. carpel, integuments, and megaspore. c. carpel, megaspore, and zygote. d. carpel, megaspore mother cell, and endosperm.arrow_forwardChoose the one answer that fits best. Which of the following statements regarding seed germination is NOT correct? O a. The first structure to emerge is the root O b. The root grows away from the light or down O c. Seeds can always germinate no matter what temperature and light conditions are d. There is no photosynthesis until green leaves emerge e. Enzymes inside the embryo break down nutrients during germinationarrow_forwardMicrosporogenesis, Callose wall Diploid (2n) nucleus Haploid (1n) nuclei Microspores Meiosis I Meiosis ir Microsporocyte Tetrad Vegetative nucleus Microspore nucleus Vacuole Generative cell Yegetative nucleus Pollen Mitosis I Pollen Mitosis II Sperm 'cells Released Polarised Bicellular Tricellular microspore microspore pollen pollen Microgametogenesisarrow_forward
- Which pairing below can be distinguished by the following description: "fruit formed from a single flower with many ovaries versus a fruit formed from the fusion of many flowers" O achene versus a samara O aggregate fruit versus a multiple fruit O filament versus a legume O pome versus a pep0 MacBook Pro G Search or type URL # 2$ 1 2 3 4 < COarrow_forwardIn a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg? ovary → style → stigma stigma → style → ovary ovary→ stigma→ style stigma→ ovary → stylearrow_forwardIn the mature angiosperm seed, the nutritive tissue is triploid. This tissue is formed from; Two polar nucleii fusing with a sperm cell The synergids fusing with a sperm cell The sperm fusing with the egg cell The embryoarrow_forward
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