Campbell Biology: Concepts & Connections (8th Edition)
8th Edition
ISBN: 9780321885326
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 7, Problem 14TYK
Summary Introduction
To propose a hypothesis: The hypothesis in the given experiment and whether the experimental result support the hypothesis.
Introduction:
Carbon dioxide gas is a greenhouse gas which also acts as a growth and reproductive stimulator of plants through increased photosynthetic carbon assimilation. Rise in temperature is related to elevated concentration of CO2, which may lengthen the flowering season and which will further increase the pollen loads. Individuals who are allergic to pollen can suffer more in this condition.
Hypothesis: Increase in CO2 concentration increases the pollen production.
Summary Introduction
To determine: The other variables to be tested and the measurements required in the given experiment.
Introduction:
Carbon dioxide gas is a greenhouse gas which also acts as a growth and reproductive stimulator of plants through increased photosynthetic carbon assimilation. Rise in temperature is related to elevated concentration of CO2, which may lengthen the flowering season and which will further increase the pollen loads. Individuals who are allergic to pollen can suffer more in this condition.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A team of researchers investigated the effects of phosphorous availability and light intensity on an angiosperm species. Seeds of the angiosperm were divided into four equal groups. Groups 1 and 2 were exposed to 200 pmol, and Groups 3 and 4 were exposed to 500 umol. Groups 2 and 4 also received a phosphorous (P) solution. After 20 days, all plants were weighed, and the average dry weight of each group was calculated. The results are in the table below. Group 1(200 pmol, Group 2(200 umol, Group 3 (500 umol, Group 4 (500 pmol no P) no P) +P) Average Dry weight (g) Describe the effects of light and phosphorous on the growth of the plants in this study. Explain how the metabolic processes associated with the plant kingdom likely influenced these results. 10.8 1.5 6.2
c) Suppose you count the number of seeds produced by milkweed plants in different habitats with variable
numbers of herbivores present. Add trendlines to the graphs below to represent your hypothesized
outcomes for fecundity relative to plant damage and latex production.
0.6
0.2
-0.2
-0.6 -
-1
2.
Latex production index
Plant damage index
d) Provide a valid rationale to explain why latex production and plant damage would influence seed
production as you hypothesized above.
Differences in seed
production
Danish is preparing a plate of papaya (Carica papaya) for his sleepover friends. As
he cuts open the papaya, they discover great numbers of slime-covered seed inside,
surrounded by soft flesh and soft skin. Before papaya fruits ripen and the seeds inside
them mature, their flesh is bitter or sour. Only later does it become tasty.
Discuss how this feature improves the odds for the plant's reproductive success and
identify the possible agents to disperse the seeds.
Chapter 7 Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Ch. 7 - Complete this summary map of photosynthesis.Ch. 7 - In photosynthesis, __________ is oxidized and...Ch. 7 - Which of the following are produced by reactions...Ch. 7 - When light strikes chlorophyll molecules in the...Ch. 7 - The reactions of the Calvin cycle are not directly...Ch. 7 - Which of the following does not occur during the...Ch. 7 - Why is it difficult for C3 plants to carry out...Ch. 7 - How is photosynthesis similar in C4 plants and CAM...Ch. 7 - Compare and describe the roles of CO2 and H2O in...Ch. 7 - Explain why a poison that inhibits an enzyme of...
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
- 4. This line graph compares the growth of plants that were kept in the sun for different amounts of time. Key 180 1 Hour of Sunlight 3 Hours of Sunlight 6 Hours of Sunlight 9 Hours of Sunlight 160 140 120 E 100 80 60 40 20 7 10 Day plant measured a) On Day 7, the plants kept in the sun for 3 hours were how tall? 20 45 b) On Day 7, the plants kept in the sun for 6 hours were how tall? c) On Day 10, the plants kept in the sun for 9 hours were how tall? IC2 d) On Day 11, the plant that was grown with 1 hour of sunlight was how tall? e) Based on the graph, the plant grows best in what amount of sunlight? 5. The line graph shows the number of worms collected and their lengths. a) What length of worm is most common? b) What was the longest worm found? c) How many worms were 6 cm long? d) How many worms were 7.25 cm long? e) The peak of the curve represents the [ longest worms / average worms ]. 4.0 4.5 5.0 55 6.0 6.5 7.0 7.5 8.0 8.5 9.0 Length of worm (cm) www.biologycorner.com Number of…arrow_forwardThe data that is attached below was collected during a lettuce seed ecotoxicity assay. Lettuce seed assays are used to compare the ecotoxicity of methanol, ethanol, and isopropanol by these alcohols' effects on germination rate and root elongination. Using the attached data, help answer which alcohol seems to be the most toxic to lettuce seeds. Why or why not would your results be expected? What does this information tell you about using ecotoxicity data to estimate human toxicity?arrow_forwardNext, 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_forward
- At which temperature pollen grains can be stored for several years in liquid nitrogen?arrow_forwardIs green house effect is a natural phenomenon?arrow_forwardThe fungus Botrytis is known to cause rot in fruit and decrease the harvest. In an effort to limit the damage, some agriculturalists spray the soil of orchards with fungicides. The effect of fungicides is not specific for Botrytis and kills most fungi in the soil. In a short answer, predict what would happen to the yield of grapes following fumigation and explain the rationale for your prediction. B IU Answered F1 F2 F3 F4 F5 F6 E7 F8 F9 @ # & 7 2 3 5 7 W E R I Y !!!arrow_forward
- Recently, scientists have become concerned that bees are dying in large numbers. One of the primary suspects has been a new kind of pesticide. Now, other researchers are investigating the potential toxicity of metal pollution on bees. Soil may become contaminated by exhaust from vehicles, industrial machinery, and farming equipment. In a study that allowed bees to forage from flowers that were uncontaminated or contaminated with nickel and aluminum, bees avoided the flowers that were contaminated with nickel. However, the bees did not discriminate against the flowers that were contaminated with aluminum. This may indicate that the bees foraged in the past on aluminum-contaminated flowers and had become tolerant or immune to the aluminum. The results of the study may have implications for phytoremediation, the practice of growing plants on polluted soil to remove contaminants. 1. Which are the effects of metal toxicity of metal pollution in bees? 2. What is phytoremediation? Is it…arrow_forwardPropose an experimental design to study the role of phytohormones in the maintenance or destruction of chlorophyll. You have access to the following chemicals and instruments/equipment: cork borer, scissors, pet dishes, kinetin, benzyl adenine, gibberellic acid, indole acetic acid, organic solvent, analytical instruments in the laboratory.arrow_forwardIntraspecific competition is a competition between members of the same species and is commonly observed in crop plants. Table 6.2 shows the results of a greenhouse experiment which examined the effects of density on the germination and growth of barley. Plants were grown for two weeks in 10- cm diameter pots kept in identical environmental conditions and watered regularly. At the end of the experiment the plants were cropped by cutting the stems at the soil surface. In the given context, can you explain thoroughly the meaning of plant density that this passage is talking about?arrow_forward
- What possible experiments can be done to examine whether Agrius convolvuli is the selective agent acting on the length of flower tubes in G. longicollis?arrow_forwardTable 1. Average turgor loss point, stem hydraulic conductivity and plant water use efficiency for the two species. Trait Species A Species B Statistics Turgor loss point -2.5 MPa -1.1. MPa p <0.033 Hydraulic conductivity 0.11 Kg mm-1 MPa-1 s-1 0.33 Kg mm-1 MPa-1 s-1 p <0.005 Water use efficiency 80.6 µmol mol-1 47.1 µmol mol-1 p <0.004 Explain using data from Table 1 and Figure 2 the two different physiological strategies for these species against the environmental stressors expected from Figure 1. Figure 2.(attached) Pre-dawn and midday leaf water potential (Ψleaf) for the two species at different dates throughout the year.arrow_forwardIn walking through our well fertilized spinach field you look over at your neighbors spinach held which is not fertilized. Which statements below are likely to be true? a). your plants will have lower chlorophvll concentrations than your neighbors b). vour feld will have more violaxanthins (me per gFW) than your neighbors c). your plants will have greater chlorophyll concentrations than your neighbors plants d. your plants will generally have more unstacked thylakoidsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College