Campbell Biology In Focus
2nd Edition
ISBN: 9780134203072
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 30, Problem 15TYU
SYNTHESIZE YOUR KNOWLEDGE
This colorized SEM shows pollen grains from six plant species. Explain how pollen develops, what its function is; and how it contributed to the dominance of
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using the illustrations above arrange the following statements to explain the process of pollen formation in angiosperms "using the illustrations above, arrange the following statements to explain the process of pollen formation in angiosperms"
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
In 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 → style
Chapter 30 Solutions
Campbell Biology In Focus
Ch. 30.1 - WHAT IF? If flowers had shorter styles, pollen...Ch. 30.1 - WHAT IF? In some species, sepals look like petals,...Ch. 30.1 - Prob. 3CCCh. 30.2 - Prob. 1CCCh. 30.2 - Prob. 2CCCh. 30.2 - Self-fertilization, or selfing, seems to have...Ch. 30.3 - Prob. 1CCCh. 30.3 - Why does Bt maize have less fumonisin than non-GM...Ch. 30.3 - WHAT IF? In a few species, chloroplast genes are...Ch. 30 - A seed develops from an A. ovum B. embryo. C....
Ch. 30 - A fruit is a A. mature ovary. B. B . mature ovule....Ch. 30 - Double fertilization means that A. flowers must be...Ch. 30 - Golden Rice A. is resistant to various herbicides,...Ch. 30 - Which statement concerning grafting is correct? A....Ch. 30 - Some dioecious species have the XY genotype for...Ch. 30 - A small flower with green petals is most likely A....Ch. 30 - The pollen produced by wind-pollinated plants is...Ch. 30 - The black dots that cover strawberries are...Ch. 30 - DRAW IT Draw a flower and label the parts.Ch. 30 - SCIENTIFIC INQUIRY Critics of GM foods have argued...Ch. 30 - SCIENCE, TECHNOLOGY, AND SOCIETY People have...Ch. 30 - FOCUS ON EVOLUTION With respect to sexual...Ch. 30 - FOCUS ON ORGANIZATION In a short essay (100-150...Ch. 30 - SYNTHESIZE YOUR KNOWLEDGE This colorized SEM shows...
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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 МacВook Pro G Search or type URL @ 2# $ & * 2 3 4 6 8 W E R Yarrow_forwardIn flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microsporesarrow_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
- Test Your Understanding Know and Comprehend 9. After fertilization, the______________ develop(s) into a fruit and the ______________ develop(s) into a seed. (a) ovary; ovule (b) polar nuclei; ovule (c) ovary; endosperm (d) ovule; ovary (e) ovule; polar nucleiarrow_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_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
- Please type a brief definition of the following terms Photoperiod - Long day vs. Short day vs. Day-neutral plants - Merosity - Quartet model - Orthologs - Microsporangium - Staminode - Self-incompatibility (SI) - Aggregate vs. multiple fruits - Homology vs. Homoplasy -arrow_forwardWrite on mega-Sporogenesis, microsporogenesis and development of embryo in angiospermsarrow_forwardAnswer 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_forward
- A team of botanists discovers a new species of plant in a tropical rain forest. After observing its anatomy and life cycle, they note the following characteristics and observations: 1. Presence of pollen cones and ovulate cones 2. Diploid-dominant 3. Seeds 4. vascular tissues 5. Absence of anything that resembles a flower This plant is probably a(n) Group of answer choices moss angiosperm protist gymnosperm fernarrow_forwardRate the structures below based on their sizes with 1 being the biggest and 4 being the smallest. Sperm Petal Ovary Ovule One of the differences between gymnosperms and angiosperms is the placement of the microsporangia and macrosporangia in the sporophyte. True False Seeds are produced in special protective tissues of a sporophyte. True False Pollen grains are released from macrosporangia in anthers. True Falsearrow_forwardAnswer the following questions: What is meant by “double fertilization”? What features of seeds and fruits have enabled angiosperms to become so widespread? What are the similarities and differences between cones and flowers?arrow_forward
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