BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
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Chapter 39.4, Problem 2LO
Summary Introduction
To explain: The way by which seed dormancy is an important evolutionary innovation.
Introduction: Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae. The parts of plants include stem, roots, leaves, flowers, fruit, and seeds. The seed is a small-embryonic plant enclosed in a covering called the seed coat, generally with some stored food.
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Imagine that you are a member of a research group conducting research on fruit type and seed dispersal. Your group has submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document.
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Chapter 39 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 39.1 - Compare the pigments phytochrome and chlorophyll.Ch. 39.1 - List growth responses influenced by phytochrome.Ch. 39.1 - Prob. 3LOCh. 39.2 - Prob. 1LOCh. 39.2 - Prob. 2LOCh. 39.3 - Prob. 1LOCh. 39.3 - Prob. 2LOCh. 39.3 - Prob. 3LOCh. 39.4 - Prob. 1LOCh. 39.4 - Prob. 2LO
Ch. 39.4 - Identify the types of biological molecules that...Ch. 39.5 - Discuss properties of hormones.Ch. 39.5 - Prob. 2LOCh. 39.5 - Prob. 3LOCh. 39 - Prob. 1DACh. 39 - Prob. 1IQCh. 39 - Prob. 2IQCh. 39 - Propose a mechanism to explain how seedlings could...Ch. 39 - Which of the following is stimulated by blue...Ch. 39 - Prob. 2UCh. 39 - Prob. 3UCh. 39 - Prob. 4UCh. 39 - Which of the following does NOT happen as a seed...Ch. 39 - Dwarf mutants can sometimes be induced to grow...Ch. 39 - Prob. 1ACh. 39 - If you were to plant a de-etiolated (det2) mutant...Ch. 39 - Prob. 3ACh. 39 - Which of the following defects would prevent...Ch. 39 - You have come up with a brilliant idea to stretch...Ch. 39 - You have identified a mutant Arabtdopsis plant...Ch. 39 - Which of the following might not be observed in a...Ch. 39 - Prob. 1SCh. 39 - Prob. 2SCh. 39 - The current model for gravitropism suggests that...Ch. 39 - Prob. 4S
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- Explain when in nature seedlings are exposed to dark environments and then light environments and connect this to an adaptive evolutionary explanation for why seedlings respond in different ways to dark vs. light environments in regards to collenchyma production and stem stoutness.arrow_forwardUsing a young root as an example, explain how where a cell is located during development determines its function and how the three primary meristems are involved.arrow_forwardDescribe the differences between eudicot and monocotseed germination.arrow_forward
- Explain: Internally, cycad stems are similar to those of seed ferns— a thick cortex containing secretory ducts surrounds a small amount of manoxylic (parenchymatous) wood.arrow_forwardDescribe the origin of seed habit in plants.arrow_forwardExplain the process of secondary growth in the stems of woody angiospermswith the help of schematic diagrams. What is its significance?arrow_forward
- Which of these is a feature not present in seedless plants that have contributed to the success of seed plants on land? a. Seeds have four layers of protective tissue, the seed coat, that improve survival by providing more protection from environmental stresses. b. The reduced gametophytes of seed plants are nurtured by sporophytes and protected from stress, such as drought conditions and UV radiation. c. Seed germination is solely mediated by water during episodes of heavy rain. d. Pollen grains, with walls containing sporopollenin, deter herbivores. Three unknown non-vascular plant species were collected by Biology 3 students. Which characters BEST discriminate them from one another? 1. protonema II. special organelles III. seta IV. calyptra V. capsule VI. stalk a. I,II,III b. I,III,V c. III, IV, V d. II,IV,VIarrow_forwardExplain why some seeds undergo dormancy, and give someexamples of triggers for germination.arrow_forwardExplain, the differences between plant generations, include: 1) how can you tell which is dominant 2) gametophyte vs sporophyte 3) haploid vs diploid 4) examples from both gymnosperms and angiospermsarrow_forward
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