Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Textbook Question
Chapter 30, Problem 4TYU
Which of thc following is not a characteristic that distinguishes gymnosperms and
(B) ovules
- (C) pollen
- (D) alternation of generalion
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Where in an angiosperm would you finda megasporangium?(A) in the style of a flower(B) enclosed in the stigma of a flower(C) within an ovule contained within an ovaryof a flower(D) packed into pollen sacs within the anthers found on astamen
Gymnosperms and angiosperms have the following incommon except(A) seeds.(B) pollen.(C) ovaries.(D) ovules.
Lilium Ovary
Describe the function of each structure (Central column, ovule, funiculus, septum, pericarp, and locule)
Compare the lily ovary to the pistillate strobilus of a gymnosperm
Chapter 30 Solutions
Campbell Biology: Custom Edition
Ch. 30.1 - Contrast how sperm reach the eggs of seedless...Ch. 30.1 - What features not present in seedless plants have...Ch. 30.1 - WHAT IF? If a seed could not enter dormancy, how...Ch. 30.2 - Use examples from Figure 30.7 to describe how...Ch. 30.2 - Explain how the pine life cycle in Figure 30.4...Ch. 30.2 - Prob. 3CCCh. 30.3 - It is said that an oak is an acorns way of making...Ch. 30.3 - Compare and contrast a pine cone and a flower in...Ch. 30.3 - WHAT IF? Do speciation rates in closely related...Ch. 30.4 - Explain why plant diversity can be considered a...
Ch. 30.4 - Prob. 2CCCh. 30 - Describe how the parts of an ovule (integument....Ch. 30 - Although there are fewer Ihan 1,000 spedes of...Ch. 30 - Explain why Darwin called the origin of...Ch. 30 - Prob. 30.4CRCh. 30 - Where in an angiosperm would you find a...Ch. 30 - Prob. 2TYUCh. 30 - With respect to angiosperms, which of the...Ch. 30 - Which of thc following is not a characteristic...Ch. 30 - Gymnosperms and angiosperms liave tlie following...Ch. 30 - DRAW IT Use the letters a-d to label where on the...Ch. 30 - EVOLUTION CONNECTION The history of life has been...Ch. 30 - Prob. 8TYUCh. 30 - WRITE ABOUT A THEME: ORGANIZATION Cells arc the...Ch. 30 - Prob. 10TYU
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- Motile sperm cells are found as vestiges in these two gymnosperm groups: (a) monocots, eudicots (b) gnetophytes, conifers (c) gnetophytes, flowering plants (d) cycads, conifers (e) cycads, ginkgoarrow_forwardDraw a diagram of L.S. of an anatropous ovule of an Angiosperm & label the following parts :- (i) Nucellus (ii) Integument (iii) Antipodal cells (iv) Secondary Nucleus.arrow_forwardWhat is the function of filiform apparatus in an angiospermic embryo sac? (a) Brings about opening of the pollen tube (b) Guides the pollen tube into a synergid (c) Prevents entry of more than one pollen tube into a synergid (d) None of thesearrow_forward
- The part of gynoecium that determines the compatible nature of pollen is: (a) stigma (b) style (c) ovary (d) synergidsarrow_forwardKey features of seed plants facilitating life on land include threeof the following four traits. Select the exception.(A) homospory(B) pollen(C) reduced gametophytes(D) seedsarrow_forwardWhich 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 МacВook Pro G Search or type URL @ 2# $ & * 2 3 4 6 8 W E R Yarrow_forward
- 11. The scales of pine cones are (a) always green. (b) modified roots. (c) modified leaves. (d) modified stems. 12. Plants that make flowers are called (a) gymnosperms. (b) byrophytes. (c) gametophytes. (d) angiosperms. 13. The class of plants that has vascular tissue and reproduces with spores is the (a) clubmosses. (b) liverworts. (c) flowering plants. (d) conifers. 14. The embryonic stem in a seed is called the (a) radicle. (b) hypocotyl. (c) seed cont. (d) endosperm. 15. Pollen contains (a) male gametes. (b) female gametes. (c) fruits. (d) a stigma.arrow_forwardWith respect to angiosperms, which of the followingis incorrectly paired with its chromosome count?(A) egg—n(B) megaspore—2n(C) microspore—n(D) zygote—2narrow_forwardPart 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 uilid Sengit olybiolq sdh ei todW A Figure 4. Lilium ovule c.s. (Enlargement of inset of Figure 3)arrow_forward
- Are gymnosperms heterosporous or homosporous? Explain what this means. What are the evolutionary "advances" represented by the seed?arrow_forwardAnother distinguishing feature of gymnosperms is that they have resin ducts, which conduct complex chemical compounds such tar, resins and turpentine. What is the function of these three chemicals?arrow_forwardCallase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by: (a) pollens (b) tapetum (c) middle layers (d) endothecium.arrow_forward
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