Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 32, Problem 3VCQ
Figure 32.20 What is the function of the
cotyledon?
- It develops into the root.
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Part B: The Embryo Sac
Examine the demonstration slide of a c.s. of a lily ovary. Find an ovule. Identify the
funiculus, the chalaza, the integuments, the micropyle, and the developing female
gametophyte. The latter is commonly referred to as the embryo sac in angiosperms. If
your slide has several embryo sacs, they are likely to be at variable stages of development.
(See text Figure 19-18b,c, page 469.) Like the female gametophyte in pine, the embryo sac
develops from a megaspore.
5. Label the ovary wall, ovule, integuments, and developing embryo sac in Figures 3.
and 4. below.
Figure 3. Lilium ovary c.s.
Photo by Carolyn Alling
126
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Figure 4. Lilium ovule c.s. (Enlargement of inset of Figure 3)
Even before a seed germinates, it already has a root; what is the name of this embryonic root? In eudicots, what does this embryonic root usually develop into? In most monocots, this embryonic root does a strange thing during or immediately after germination. What does it do?
Chapter 32 Solutions
Biology 2e
Ch. 32 - Figure 32.3 If the anther is missing, what type of...Ch. 32 - Figure 32.8 An embryo sac is missing the...Ch. 32 - Figure 32.20 What is the function of the...Ch. 32 - In a plant’s male reproductive organs, development...Ch. 32 - The stamen consists of a long stalk called the...Ch. 32 - Theare collectively called the calyx sepals petals...Ch. 32 - The pollen lands on which part of the flower?...Ch. 32 - After double fertilization: a zygote and ______...Ch. 32 - The fertilized ovule gives rise to the fruit seed...Ch. 32 - What is the term for a fruit that develops from...
Ch. 32 - The is the outermost covering of a______ fruit....Ch. 32 - _______ is a useful method of asexual reproduction...Ch. 32 - Which of the following is an advantage of asexual...Ch. 32 - Plants that flower once in their lifetime are...Ch. 32 - Plant species that complete their lifecycle in one...Ch. 32 - Describe the reproductive organs inside a flowerCh. 32 - Describe the two-stage lifecycle of plants: the...Ch. 32 - Describe the four main parts, or whorls, of a...Ch. 32 - Discuss the differences between a complete flower...Ch. 32 - Why do some seeds undergo a period of dormancy,...Ch. 32 - Discuss some ways in which fruit seeds are...Ch. 32 - What are some advantages of asexual reproduction...Ch. 32 - Describe natural and artificial methods of asexual...Ch. 32 - Discuss the life cycles of various plantsCh. 32 - How are plants classified on the basis of...
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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
- Figure 25.24 Which of the following statements about the fern life cycle is false? Sporangia produce haploid spores. The sporophyte grows from a gametophyte The sporophyte is diploid and the gametophyte is haploid. Sporangia form on the underside of the gametophyte.arrow_forwardFigure 23.28 Which of the following statements about the Laminaria life cycle is false? In zoospores form in the sporangia. The sporophyte is the 2n plant. The gametophyte is diploid. Both the gametophyte and sporophyte stages are multicellular.arrow_forwardWhich of the following is not a characteristic of plants? (a) cuticle (b) unicellular gametangia (c) stomata (d) multicellular embryo (e) alternation of generationsarrow_forward
- Roots that enable a plant to grow on another plant are called.______ epiphytic roots prop roots adventitious roots aerial rootsarrow_forwardFigure 32.3 If the anther is missing, what type of reproductive structure will the flower be unable to produce? What term is used to describe a flower that is normally lacking the androecium? What term describes a flower lacking a gynoecium?arrow_forwardFigure 14.26 If a flower lacked a megasporangium, what type of gamete would it not be able to form? If it lacked a microsporangium, what type of gamete would not form?arrow_forward
- Observe the root system of a plant with root nodules. If you don’t have these plants at home or at your backyard, you may look up for their pictures in any references. Draw the root system and describe the nodules by noting the location, nature of attachment, shape, and their relative sizes.arrow_forwardlocate the following in each picture ● node● internode● leaf sheath (if possible)● lenticel (if possible)● axillary bud (if possible) please use arrow inarrow_forwardIn a germinating seed, the downward growth of roots and upward growth of stems are the plant’s responses to gravity. Which statement best describes this phenomenon? * downward growth of roots – positive response to gravity ; upward growth of stems – negative response to gravity downward growth of roots – negative response to gravity ; upward growth of stems – positive response to gravity downward growth of roots – positive response to gravity ; upward growth of stems – positive response to gravity No answer downward growth of roots – negative response to gravity; upward growth of stems – negative response to gravityarrow_forward
- Your class is studying the burrs – the seed pods – of the common burdock plant. Your lab partner notices that the burrs easily cling to clothing, as well as to each other, and that some of the spines have come loose and gotten stuck in her skin, which is somewhat painful. Based on these observations, is there a logical explanation, other than reproductive success, for why the seed might have this special structure? (a) Yes, the structure may help the seed cling to the soil so that it can take root more easily (b) yes, these structures may prevent the seeds from getting damaged or eaten by other animals (c) yes, the structures may help prevent the seeds from getting pulled from the plant by sticking to each other (d) No, they are obviously intended to attach to animals so that they can be carried and dropped elsewherearrow_forwardThe term hypocotyl refers to the portion of the embryonic stem that is located below the attachment of the cotyledons. Is the statement true or falsearrow_forwardDo you agree that it is the stem that is growing? Why or why not? Notebook Entry 1 My seed has begun to grow. I think the thing coming out of the split seed is the stem. It will begin to grow up in a few more days. Later, the root will begin to grow.arrow_forward
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