Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 29, Problem 2CT
All but one species of large birds native to New Zealand’s tropical forests are now extinct. Numbers of the one surviving species, the kereru (Hemiphaga, novae seelandine), are declining rapidly due to habitat loss, poaching, predation, and interspecies competition that wiped out the other native birds. The keruru is the only remaining dispersal agent for several native tress that produce big seeds and fruits, mainly because it is the only remaining species that can swallow big fruits (left) and expel big seeds whole. One of these trees, the puriri (Vitex lucens), is New Zealand’s most valued hardwood. Explain, in terms of natural selection, what would happen to puriri trees in New Zealand if the kereru becomes extinct.
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Toucans disperse seeds of key forest species such as juçara palms by eating the fruit and defecating the seeds in new locations, sometimes more than a kilometer away. If there are no toucans, is the genetic diversity of palms likely to increase or decrease within forest fragments? And why?
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Chapter 29 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 29 - Whos the Pollinator? Massonia depressa is a...Ch. 29 - Whos the Pollinator? Massonia depressa is a...Ch. 29 - Whos the Pollinator? Massonia depressa is a...Ch. 29 - Prob. 4DAACh. 29 - The arrival of pollen grains on a receptive stigma...Ch. 29 - An animal pollinator may be rewarded by _______...Ch. 29 - Prob. 3SQCh. 29 - In flowrers, the structures that produce male...Ch. 29 - Meiosis of cells in pollen sacs forms haploid...Ch. 29 - Prob. 6SQ
Ch. 29 - Choose the statement that is true. a. All flowers...Ch. 29 - The seed coat forms from the __________. a....Ch. 29 - Seeds are mature ______; fruits are mature...Ch. 29 - Jessica is preparing a plate of fruits for a party...Ch. 29 - Cotyledons develop as pan of ________. a. carpels...Ch. 29 - Exposure to _______ can trigger seed germination....Ch. 29 - Prob. 13SQCh. 29 - Match the terms with the most suitable...Ch. 29 - Prob. 15SQCh. 29 - Prob. 1CTCh. 29 - All but one species of large birds native to New...Ch. 29 - Is the seedling shown on the right a monocot or...
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