Biological Science, Loose-leaf Edition (7th Edition)
7th Edition
ISBN: 9780135272800
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 28, Problem 10TYPSS
PROCESS OF SCIENCE You have been hired as a field assistant for a researcher interested in the evolution of flower characteristics in orchids. Design an experiment to determine whether color, size, shape, scent, or amount of nectar is the most important factor in attracting pollinators to a particular species. Assume that you can change any flower's color with a dye and that you can remove petals or nectar stores, add particular scents, add nectar by injection, or switch parts among species by cutting and gluing.
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The drooping, bell-like flower Aquilegia canadensis is adapted for cross-pollination. However, if the plant has not been pollinated previously, self-pollination can occur. However, if cross pollination occurs after self-pollination takes place, the pollen from cross pollination reaches the style before the pollen from self-pollination. Using course concepts and vocabulary 1) Provide a reasoning for this phenomenon. 2) Would this adaptation for reproduction be beneficial for the plant?
Using scientific concepts and terms describe how the Bucket Orchid can temporarily “hold” onto the bee’s body while it glues the pollen sacs to the bees back. In other words, what type of plant “movement” (aka. response) would this most likely be described as? Please watch the YouTube link to answer the question.
An Orchid’s Trap
https://youtu.be/_uHJGdTgtXE
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?
Chapter 28 Solutions
Biological Science, Loose-leaf Edition (7th Edition)
Ch. 28 - What important role does lignin play in vascular...Ch. 28 - Prob. 2TYKCh. 28 - What is a pollen grain? a. male gametophyte b....Ch. 28 - 5. What does it mean to say that a life cycle is...Ch. 28 - 6. SOCIETY Soils, water, and the atmosphere are...Ch. 28 - Prob. 7TYUCh. 28 - Explain the difference between homosporous and...Ch. 28 - Angiosperms such as grasses, oaks, and maples are...Ch. 28 - PROCESS OF SCIENCE You have been hired as a field...Ch. 28 - Is long-distance sex possible in mosses?
Moss...
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- Design an experiment by following the five principles of an experiment. As a researcher, you want to test the effectiveness of a certain spray to lengthen the life of flowers.arrow_forwardCompare wind-pollinated and animal pollinated seed vascular plants in terms of the following characteristics: -Pollination method -Relative efficiency of pollination method -Plant types -Reproductive organs -Adaptations that promote pollination. Tabulate your answersarrow_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
- In the experiment conducted to test why individuals in the tree species Fuschsia excorticata retain flowers after they turn red even though the trees pollinate and offer a nectar reward only when flowers are green (Figure attached 10.28 first tested the 'pollinator-attraction' hypothesis that red flowers attract pollinators: once drawn to a tree, pollinators could forage on the green flowers still present, increasing overall pollination efficiency. Please assess the lowercase-Roman-numeral-labelled statements that appear immediately below and click the uppercase-letter-labelled response that appears below and conveys the most accurate information. i. If the pollinator-attraction hypothesis were correct, then green flowers surrounded by red flowers should receive more pollen than should green flowers surrounded by only green flowers. ii. The prediction in statement i could be tested by removing red flowers from some trees, forming one experimental group, and leaving red flowers on…arrow_forwardAs depicted in the diagram, honeybees communicate the location of flower patches to members of their hives with waggle dances that give information about the direction and distance to the flowers. Which of the following statements about how honeybees communicate the position of flower patches is most consistent with the model? a. The total area covered by any waggle dance leads bees to the target flowers. b. The farther the target flowers from the hive, the longer the waggle phase. c. The angle of the waggle phase relative to the vertical plane indicates the position of the target flowers relative to another beehive. d.The number of repetitions of the waggle dance indicates the quality of the pollen source.arrow_forwardA) Using the information/image provided, why could the researchers rule out pollinator selection as a reason for flower color variation? B) What must be true about the flowers in Boechera stricta? A) Plants have both male and female flowers that are reproductively mature at the same time. B) Plants have both male and female flowers that are reproductively mature at different times. C) Plants produce either male or female flowers C) If the scientists' hypothesis is true, what type of herbivore defense is flower pigmentation in this mustard? either constitutive or induciblearrow_forward
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