CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
3rd Edition
ISBN: 9780135686065
Author: Urry
Publisher: PEARSON
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Chapter 26, Problem 8TYU
FOCUS ON EVOLUTION
The history of life has been punctuated by several mass extinctions. For example, the impact of a meteorite may have wiped out most of the dinosaurs and many forms of marine life at the end of the Cretaceous period (see Figure 23.12). Fossils indicate that plants were less severely affected by this mass extinction. What adaptations may have enabled plants to withstand this disaster better than animals?
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EVOLUTION CONNECTION The history of life has beenpunctuated by several mass extinctions. For example, theimpact of a meteorite may have wiped out most of thedinosaurs and many forms of marine life at the end of theCretaceous period (see Concept 25.4). Fossils indicate thatplants were less severely affected by this mass extinction.What adaptations may have enabled plants to withstandthis disaster better than animals?
BIOMES & ADAPTIVE RADIATION
Adaptive Radiation
ven the type of biome these succulent plants are found in, identify 3 important stressors present in their environments.
Now, describe how these pressures likely influenced the diversification of these plant lineages. Use one of the plant families listed above (and your representative species) to discuss as an example. (A well-developed paragraph is expected.)
Some ancestral plants had a difficult transition to land, as challenges to survive caused plant evolution to develop very specialized adaptations over an extended amount of time. These are some
of the challenges that plants faced:
A. Avoiding desiccation
B. Supporting larger bodies (against gravity)
C Internally transporting substances
D. Keeping gametes wet
E. Keeping embryos wet
For each of the above challenges. provide a structure/adaptation that plants have developed which mitigates that specific challenge. Must describe a structure or trait for all!
Chapter 26 Solutions
CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
Ch. 26.1 - Why do researchers identify charophytes rather...Ch. 26.1 - Prob. 2CCCh. 26.1 - Prob. 3CCCh. 26.1 - WHAT IF? What would the human life cycle be like...Ch. 26.2 - Prob. 1CCCh. 26.2 - Describe the importance of mycorrhizae, both today...Ch. 26.2 - MAKE CONNECTIONS Review Figures 8 .3 and 8.5. If a...Ch. 26.3 - Prob. 1CCCh. 26.3 - Prob. 2CCCh. 26.3 - MAKE CONNECTIONS Monilophytes and seed plants both...
Ch. 26.4 - What features not present in seedless plants have...Ch. 26.4 - Explain why Darwin called the origin of...Ch. 26.4 - MAKE CONNECTIONS Suppose the Bennettitales and...Ch. 26.5 - Prob. 1CCCh. 26.5 - Prob. 2CCCh. 26.5 - MAKE CONNECTIONS Figure 1.9 illustrates the...Ch. 26.5 - Prob. 4CCCh. 26 - Prob. 1TYUCh. 26 - Which of the following characteristics of plants...Ch. 26 - Prob. 3TYUCh. 26 - Prob. 4TYUCh. 26 - Prob. 5TYUCh. 26 - DRAW IT Use the letters a-d to label where on the...Ch. 26 - SCIENTIFIC INQUIRY INTERPRET THE DATA The grass...Ch. 26 - FOCUS ON EVOLUTION The history of life has been...Ch. 26 - FOCUS ON INTERACTIONS Giant lycophyte trees of...Ch. 26 - SYNTHESIZE YOUR KNOWLEDGE These stomata are from...
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- Test Your Understanding Know and Comprehend 11. This flowering plant may be the nearest living relative to the ancestor of all flowering plants, (a) Amborella (b) Archaeopteris (c) Gnetum (d) water lily (e) magnoliaarrow_forwardEvolutionary biologists have coined the term exaptation to describe a common occurrence in the evolution of life. A plant organ originally has a particular function, however, fulfills a new one. Provide two examples of exaptation in plant organs and elaborate comprehensively.arrow_forwardCharophytes are the group of green algae whose ancestral lineage gave rise to land plants. Life on land comes with several challenges not required for life submerged in water. What are these challenges and how did land plants overcome them? 3 challenges that land plants overcame as they adapted to land at least 1 key adaptive characteristic that allowed them to overcome each challenge. Also, include which lineage of land plants first evolved each characteristic you state.arrow_forward
- Discuss how adaptations allowed plants to move from an aquatic environment to the variety of habitats they inhabit today. Maybe, start out by discussing single celled algae and include the transition from prokaryotes to eukaryotes. Then explain why those traits are adaptive, and how they arose. Don't forget the role of natural selection in adaptation.arrow_forwardlides chrome extension://bpmcpldpdmajfigpchkicefoigmkfalc/views/app.html ent.docx BIU A 1. Of the following characteristics of plants, which are inherited (shared with green alg are new (evolved within the plant lineage only)? a) Multicellular sporangia b) Presence of chloroplasts c) Sessile (doesn't move) d) Embryos supported by parents e) Apical meristems f) Cellulose cell walls 2. Designate each of the following as haploid or diploid. a) Green part of a moss b) Liverwort spem c) Fern sporophy te d) Cells making up the antherid ium of a fem gameto phyte e) Plant spore f) Plant embryo 3. Fill in the blank: a) A plant spore grows into a b) Eggs are produced inside c) A plant zygote grows in to a d) Sporangia produce 4. What group of plants (bryophy tes. lycophytes, pteridophytes/ferns, seed plants/spermatop vascular plants/tracheophytes, plants/embryophy tes) is being described? Choose the group best fits the description. a) Can produce lignin-reinforced tissues (e.g., xylem, sclerench…arrow_forwardThe DNA diversity of maize is not the same as the DNA diversity of teosinte. Is maize DNA diversity higher or lower than teosinte? Explain two reasons for why this is the case.arrow_forward
- A new "plant" is found to lack vascular tissue, have a dominant gametophyte generation, and swimming sperm. What would you expect the "plant" to look like? O A. Short and with needles and cones for reproduction. O B. Small, green, spread out over a large area, and live in moist environments. O C. Tall and leafy. The great surface area of the leaves would allow for much photosynthesis & make up for the lack of vascular tissue. O D. E) Filamentous cells that live in water and are heterotrophic parasites of amphibians and fishes A Moving to another question will save this response. «< Question 8 of 120 » 11:54 AM 12/16/2020 Del PrtScn F8 Home F9 End F10 PgUp PgDn F12 F11 DIl FS F7 F6 F4 F3 F2 Backspace & % %3D # 2$ 9. 7 2 3 4 T. Y U R K H * CO w/arrow_forwardWhich biological events took place during the Paleozoic Era and the Mesozoic Era? O During the Paleozoic Era, three mass extinctions occurred which led to the colonization of land by plants, while during the Mesozoic Era, gymnosperms became the dominant plant life. O During the Mesozoic Era, five mass extinctions occurred which led to the colonization of land by plants, while during the Paleozoic Era, angiosperms became the dominant plant life. O During the Mesozoic Era, three mass extinctions occurred which led to the colonization of land by plants, while during the Paleozoic Era, gymnosperms became the dominant plant life. O During the Paleozoic Era, five mass extinctions occurred which led to the colonization of land by plants, while during the Mesozoic Era, angiosperms became the dominant plant life.arrow_forwardThe extinct plant Rhynia is important because: Select one:a. they are the only known lineage of land plant to lack a cuticleb. they are some of the earliest evidence of the evolution of lignified xylemc. they occured in huge numbers and formed the coal deposits human use todayd. it is the earliest known Hornwort fossile. it shows the earliest evidence of secondary thickening in land plantsarrow_forward
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