13 Jun Most plants exhibit indeterminate growth
Question
EXAM 3 STUDY QUESTIONS
(version 1, 4/7/2015)
13. “Most plants exhibit indeterminate growth.” What does this statement mean? Do animals generally exhibit indeterminate growth? If so, provide an example of indeterminate growth in an animal species? Why is it important for plants to have indeterminate growth?
14. What is meant by the terms “phenotypic plasticity” and “morphological diversity”? Give examples of phenotypic plasticity in shoots and in roots. Do animals exhibit phenotypic plasticity? Explain your answer. Give examples of morphological diversity in roots and in shoots.
15. What are apical meristems, where are they located, and what is their role in primary growth? What is cellular differentiation? How do primary meristem cells and apical meristem cells differ?
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16. What is the difference between sexual reproduction and asexual reproduction? For plants, what is the main advantage of sexual reproduction, and what is the main advantage of asexual reproduction? Can any animals reproduce asexually? [Hint: look up “parthenogenesis” and “budding” in your textbook and/or on line.]
17. What are the four primary organs that make up a flower? What is the function of each? Does every flower have all four organs?
18. What is the “alternation of generations” in plants? How does alternation of generations in plants differ from gamete production in humans? What is a sporophyte? Are sporophyte cells diploid or haploid? What is a gametophyte? What is its ploidy? Are sporophytes and/or gametophytes unicellular or multicellular? How are male and female gametophytes formed in angiosperms? When during development is each formed?
19. What is the primary advantage of cross pollination over self pollination? Of self pollination over cross pollination? How is self pollination avoided in some plants that have “perfect” flowers?
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