Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 40.3, Problem 2CC
WHAT IF? You suspect that deer are restricting the distribution of a tree species by preferentially eating the seedlings of the tree. How might you test this hypothesis?
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. According to the video and the background information, what are the effects (direct and indirect) that elephants have on acacias? (Select all that apply.)
Elephants can feed on and destroy individual acacia trees not protected by ants.
Browsing by elephants induces the acacias to provide food and shelter to the ants.
Loss of browsing by elephants eventually leads to the decrease of ant colonization of acacias.
Reduced nutritional and physical support of ants by acacias due to loss of browsing by elephants allows other ant species and stem-boring beetles to inhabit the trees.
video link :
https://www.youtube.com/watch?v=s3blzcbll7Q&t=293s
Need help
Scenario 4: On your frequent trips to Costa Rica you have seen that there are certain trees that have
ants that live on them and the same species of trees without ants. Trees that have ants living on them
show little sign of being eaten by herbivores (deer, cows, etc.), but trees without ants are severely injured
by herbivores. You think that ants may protect these trees somehow from herbivores.
Prompt
Response
What question might you ask?
What is your hypothesis?
What is your prediction?
What are your independent
and dependent variables?
How would you experimentally
test your hypothesis? Be sure
to identify your control and
treatment groups.
Scenario 5: VWhile walking in a park, you see lush growth of a certain plant in some areas, but very poor
Chapter 40 Solutions
Campbell Biology in Focus
Ch. 40.1 - Explain how the suns unequal heating of Earths...Ch. 40.1 - Prob. 2CCCh. 40.1 - WHAT IF? If global warming increases average...Ch. 40.2 - Why are phytoplankton and not benthic algae or...Ch. 40.2 - Prob. 2CCCh. 40.2 - MAKE CONNECTIONS The addition of nutrients to a...Ch. 40.3 - Give examples of human actions that could expand a...Ch. 40.3 - WHAT IF? You suspect that deer are restricting the...Ch. 40.4 - DRAW IT Each female of a particular fish species...Ch. 40.4 - Imagine that you are constructing a life table for...
Ch. 40.4 - Prob. 3CCCh. 40.5 - Explain why a constant per capita rate of growth...Ch. 40.5 - Explain why a population that fits the logistic...Ch. 40.5 - Prob. 3CCCh. 40.6 - Prob. 1CCCh. 40.6 - WHAT IF? Mice that experience stress such as a...Ch. 40.6 - Prob. 3CCCh. 40 - Which of the following biomes is correctly paired...Ch. 40 - A populations carrying capacity A. may change as...Ch. 40 - When climbing a mountain, we can observe...Ch. 40 - According to the logistic growth equation...Ch. 40 - WHAT IF? If the direction of Earths rotation...Ch. 40 - INTERPRET THE DATA After examining Figure 40.13,...Ch. 40 - SCIENTIFIC INQUIRY Jens Clausen and colleagues, at...Ch. 40 - Prob. 8TYUCh. 40 - FOCUS ON INTERACTIONS In a short essay (100-150...Ch. 40 - Prob. 10TYU
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- Question:- Franco and Nobel (1989) discovered that there are downsides to having a nurse plant for young cacti. They found that while young cacti survive more often, they grow slower than young cacti without a nurse plant. What are the authors' two explanations for why that happens?arrow_forward5) Here are some data loosely based on tree counts collected in ecology (BIOL 308). Is there a difference in tree composition based on landscape position? Make sure you clearly state Ho, H₁, etc. Also clearly write out your decision and what it means. Q Search f6 You can either do this by hand, or if you prefer, use R (it'll be much quicker!). See the R instructions at the end. Landscape Position Ridge Top Mid-Slope Valley Bottom f7 Oaks 70 80 15 f8 Maple 15 20 5 Species Beech fg 70 120 85 Pine 20 5 5 10 ▶11 Tulip Poplar 60 20 10 Other 35 55 30 12arrow_forwardCourse: Botany In stable populations, ones that are neither increasing nor decreasing in abundance (e.g., there are a million trees now and there will be a million trees a thousand years from now), about how many of a plant’s seeds survive and grow to adulthood, being able to replace it when it dies? If during the plant’s lifetime it produces 100,000 seeds, how many do not survive, do not grow, and cannot replace it when it dies. (Hint: Do not think of humans, as we are an increasing population, not a stable one. Almost all our children survive, but that is not true of any other species.) Answer and explain briefly.arrow_forward
- Prediction versus hypothesis Homework • Unanswered Which of these is a prediction Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a When planted alongside garlic buds, strawberry plants are bug-free If garlic buds deter bugs that attack strawberry plants, then strawberry plants that are planted alongside garlic buds will host fewer bugs than those strawberry plants that are planted on their ownarrow_forwardSome aggressive understory ant species patrol the foliage of the tropical forest shrub Psychotria limonensis, wild coffee (Fig.1). The ants chase insects and other animals away from the plant's flowers and fruits. Explain why this behavior may enhance the plant's reproductive success during some periods, but decrease the plant's reproductive success at other times. Figure 1. P. limonensis Varrow_forwardFor the article "Effects of an invasive predator cascade to plants via mutualism disruption" (https://www.nature.com/articles/ncomms14557) answer the following points: - What was the question addressed by the author(s)? What was the author's hypothesis? - Overall, what did the author physically do, use, and/or document to test the hypothesis? - Summarize the results.arrow_forward
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