Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 57.4, Problem 1CC
Summary Introduction
To determine: The type of control after applying fertilizer to a bush, which increases spider density on the bush.
Introduction: Bottom down and top-down controls are two control measures of a food web or chain. These control measures are applied in the food chain to regulate the number of species. If one of them gets affected, then the related ones also have an impact.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A scientist designs an experiment to test the effect of fertilizer on the height of sugar cane. Two fields are fertilized and two other fields are not. What is the control group in this experiment?
-fertilizer application
-soil
-the unfertilized fields
-height of sugar cane
-the farmer
In North Carolina and other soybean-producing states, many farmers grow a species of soybean known as Roundup Ready. Roundup is a weed-killing chemical that was produced by Monsanto, (recently purchased by
Bayer). The farmer can directly spray Round-up on his fields and it will kill all the weeds, yet leave the soybean plants unharmed. One particular farmer noticed that after a few years of using Roundup weed killer, it became
less effective, leaving more andynore weeds alive after spraying. Which of the following explanations, best describes why these weeds remained alive?
After years of exposure to Roundup, the soybeans became more resistant to the weed killer.
Roundup-resistant weeds were more likely to survive and reproduce than were non-resistant individuals.
When Bayer bought out Monsanto, they started selling poor-quality Roundup.
Roundup-resistant weeds have less-efficient photosynthetic pathways than the original form.
do you believe that a combination of Insect Pest management techniques (crop rotation, timing of plantings, and timing of tillage and harvest) is better than using only one type? Justify your stand.
Chapter 57 Solutions
Biology
Ch. 57.1 - Prob. 1CCCh. 57.1 - Prob. 2CCCh. 57.1 - Prob. 1EQCh. 57.1 - Prob. 2EQCh. 57.1 - Prob. 3EQCh. 57.2 - Prob. 1CCCh. 57.2 - Prob. 2CCCh. 57.2 - (a) A quahog clam, cless Bavalvia (b) A chlton,...Ch. 57.2 - Prob. 3CCCh. 57.2 - Prob. 2CS
Ch. 57.2 - Core Skill: Connections More than 4,500 species of...Ch. 57.3 - Prob. 1CCCh. 57.3 - Prob. 1CSCh. 57.4 - Prob. 1CCCh. 57.4 - Core Skill: Modeling The goal of this modeling...Ch. 57 - Prob. 1TYCh. 57 - Prob. 2TYCh. 57 - Prob. 3TYCh. 57 - In Lacks study of passerine birds in Britain,...Ch. 57 - Prob. 5TYCh. 57 - Prob. 6TYCh. 57 - Prob. 7TYCh. 57 - Prob. 8TYCh. 57 - Prob. 9TYCh. 57 - Prob. 10TYCh. 57 - Prob. 1CQCh. 57 - Prob. 2CQCh. 57 - Prob. 1COQCh. 57 - Prob. 2COQCh. 57 - Prob. 3COQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- If raising honeybees as pollinators becomes unprofitable because of colony collapse, what alternatives do farmers have?arrow_forwardWhat evidence would convince you that a grassland was experiencing top-down control versus bottom-up control?arrow_forwardWhat type of pollinators are attracted to urban gardens?arrow_forward
- There are two pots of honey (2 patches of habitat). In one pot there is 3 pounds of honey, and in the other there is 7 pounds of honey. A total of 20 bees arrive to eat honey. How many should reed from the pot with 7 pounds of honey if the bees select pots to feed from according to an "ideal free distribution"?arrow_forwardDoug Schemske is a biologist who studies plants from around the world. Doug and his research team carry out experiments with the plant species Mouse-ear Cress, or Arabidopsis thaliana. They like this species because it is easy to grow in both the lab and field. Arabidopsis is very small and lives for just one year. It grows across most of the globe and in a wide range of latitudes and climates. Arabidopsis is also able to pollinate itself and produce many seeds, making it possible for researchers to grow many individuals to use in their experiments. Doug chose Arabidopsis populations in Scandinavia and the Mediterranean for his research on local adaptation because those two locations have very different climates. The populations may have adapted to have the highest survival and reproduction based on the climate of their home location. To deal with sudden freezes and cold winters in Scandinavia, plants may have evolved freeze tolerance traits, which produces chemicals that act like…arrow_forwardWhich of the following is an example of pollination? Select ALL that apply. A bird drinking nectar from deep within a flower. Squirrels eating berries. A bee visiting flowers. A black fly landing on the corpse flower because it smells like rotting flesh.arrow_forward
- Many plants mimic other plants or other animals in order to attract pollinators. a) Describe one example of plants mimicking either other plants or other animals in order to attract pollinators. b) Why might these “cheating” strategies have evolved rather than developing “truthful” signals to attract a pollinator?arrow_forwardConnor and Miguel want to investigate if the type of fertilizer changes the color of their hydrangea flowers. They select 10 hydrangea bushes and plant them in the same yard with the same type of soil. Every bush gets 3 cups of fertilizer, but each receiving a different brand. One bush gets no fertilizer. All bushes receive morning sunlight and no afternoon sunlight. All bushes are watered the same amount every other morning. After four weeks, the boys observe the color of the blooms on each bush. Independent variable: Dependent variable: Hypothesis: Control group: Experimental group: Constants:arrow_forwardImagine you are a farm owner who uses pesticides to protect your crops. You have read articles on "superbugs" thus you are concerned about the potential effects of pesticide resistance. What is 1 strategy that you (the concerned farmer) could use to prevent pesticide resistance from occurring? * 近arrow_forward
- Next, the researcher wanted to determine if the timing of the flash of ight, whether It was early or late into the dark perlod, had an affect on the flowering plants. The researcher exposed Xanthlum strumarlum plants to a cycle of 12 hours light/12 hours dark and exposed the plants to a 10 minute burst of light at different times within the dark perlod. She recorded the percent of flowering plants post exposure. The data is in the chart below. 6. What conclusions can you draw from this data? (You do not need to show a graph, but it may help with your answer.) * % of plants flowering Time of burst of light (from the beginning of dark period) 100 86 35 41 10 78 12 95 21 4- 8.arrow_forwardJenny wanted to plant sunflowers, but wasn't sure of the best place to plant them on her property - so she decided to investigate! Jenny planted 6 sunflowers where they would get sun all day, 6 where they would get some sun and some shade, and 6 where they would be in total shade all day. Jenny watered all of the sunflowers at the same time of day with the same amount of water. After 3 months Jenny measured how tall the sunflowers in each location were. What is the hypothesis that Jenny was testing? Choose all that apply. Question options: A Amount of water affects plant growth B Plant growth is affected by light exposure C Plant growth is affected by the time of day of watering D Amount of light affects plant growth because light is required for photosynthesisarrow_forwardA researcher was interested in finding out whether talking to plants was related to plant growth. To test this idea she used 20 plants where all 20 plants had the same amount of food, water and sunlight. She randomly assigned the 20 plants to 1 of 2 groups: she talked to 10 of the plants for 1 minute/day; she talked to the other 10 plants 10 minutes/day. Every day for one month the researcher measured the height of the plants. What is the Independent variable and the Dependent variable in the example above?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles Of Radiographic Imaging: An Art And A ...Health & NutritionISBN:9781337711067Author:Richard R. Carlton, Arlene M. Adler, Vesna BalacPublisher:Cengage Learning
Principles Of Radiographic Imaging: An Art And A ...
Health & Nutrition
ISBN:9781337711067
Author:Richard R. Carlton, Arlene M. Adler, Vesna Balac
Publisher:Cengage Learning