Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 30.1, Problem 3CC
WHAT IF? Ø If a seed could not enter dormancy, how might that affect the embryo’s transport or survival?
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6) Which of the following adaptations facilitated a more full liberation from water for reproduction in the seed plants?
. WHAT IF? If flowers had shorter styles, pollen tubeswould more easily reach the embryo sac. Suggest anexplanation for why very long styles have evolved inmost flowering plants.
(D) seeds3. With respect to angiosperms, which of the followingis incorrectly paired with its chromosome count?(A) egg—n(B) megaspore—2n(C) microspore—n(D) zygote—2n
Chapter 30 Solutions
Campbell Biology
Ch. 30.1 - What features not present in seedless plants have...Ch. 30.1 - Prob. 2CCCh. 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 - Prob. 3TYUCh. 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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- Explain the sequence of events in a flowering plant that begins with formation of a pollen tube and culminates with the formation of a diploid zygote and the 3n cell that will give rise to endosperm in a seed.arrow_forwardFigure 26.15 If a flower lacked a megasporangium, what type of gamete would not form? If the flower lacked a microsporangium, what type of gamete would not form?arrow_forwardDiscuss some ways in which fruit seeds are dispersed.arrow_forward
- Discuss Concepts Compare the size, anatomical complexity, and degree of independence of a Douglas fir female gametophyte and a dogwood female gametophyte. Which one is the most protected from the external environment? Which trend(s) in plant evolution does your work on this question bring to mind?arrow_forwardRearrange the sequence of conifer life cycle 1. Seed cone allows the entry of wind- borne pollen grains, once enclosed pollen grain will slowly develop pollen tube 2. Small seeds can be carried away by wind and large seeds are dispersed by animals 3. In spring or in a windy day, thousands of pollen grains will disperse. 4. Seeds contains three tissues; embryo, seed coat and gametophyte 5. Conifers produce two types of spores; pollen cone that contains male gametophyte and a seed cone containing enclosing archegonia 6. Flagellated sperm will release to fertilize the egg and eventually develop into a tiny embryo 7. Once germinated, conifer establish first a good rooting system for protection and seeking nourishment.arrow_forwardPostlab: Bryophytes, Seedless Vascular Plants & Gymnosperms 1. What is the conspicuous form of the bryophytes? Is this form haploid or diploid? 2. The part that produces the male gametes is called the....? 3. The part that produces the female gametes is called the... 4. Spores are produced by which cell division process? 5. What is the conspicuous form of the seedless vascular plants? Is it haploid or diploid? 6. What are microspores? Where are they produced in gymnosperms? 7. Megaspores give rise to which structure in gymnosperms? 8. How are most gymnosperms pollinate d? 9. In gymnosperms, the material that nourishes the embryo derives from what tissue? 10. How can you visually differentiate a male from a female cone in pines?arrow_forward
- What is the function of the suspensor?2 promote germination of the seed transfer nutrients and hormones to the embryo from the maternal tis Selected become the embryonic rootarrow_forwardMatch the advantage to the correct adaptation. allows plants to transport water and sugars quickly across long distances [Choose] [Choose] seeds xylem and phloem amniotic eggs fruits pollen flowers allows the sperm to travel to the egg safely, without water allows the sporophyte embryo to wait for the right conditions before growing helps seeds disperse to new places when animals cat them [Choose ]arrow_forwardWhich of the following is not an example of pattern formation in developing plants? a. an epidermal cell receiving developmental signals from acortical cell b. the loosening of the cell wall to allow the elongation ofselected cells to reach mature size c. regulation by homeobox genes of the position of differentflower parts d. oriented cell division that establishes the shape of an organ e. cell expansion that directs specific cells to undergo mitosis ata given time and placearrow_forward
- The three main parts of a mature seed are _________ a. pollen grain, egg, and seed coat b. embryo, endosperm, and seed coat c. megaspores, microspores, and ovulearrow_forwardHow does a haplontic plant population maintain genetic diversity? Zygotes are produced by random fusion Gametes are created through meiosis Diploid spores undergo independent assortment during mitosis The zygote undergoes meiosis to generate a haploid sporophyte.arrow_forwardTest 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_forward
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General Embryology Review in 20 minutes; Author: Medical Animations;https://www.youtube.com/watch?v=4YKvVeVMmEE;License: Standard youtube license