Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
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Chapter 46.3, Problem 1CSC
Although insects are major plant predators, carnivorous plants turn the tables on them, enticing insects with sugary secretions and bright colors. Scientists have round that the color red, such as found on the inner faces of the Venus flytrap leaf, enhances the attractiveness or certain carnivorous plants to insects. Sundews attract their insect prey using red hairs and an appealing scent.
Very few plants “eat” insects as Venus flytraps and sundews do. Do most plants instead stand stoically and allow themselves to be chewed on by insects or invaded by pathogens—or can they defend themselves?
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Students have asked these similar questions
Which of the following are examples of how plants can either benefit or fool herbivores or
pollinators?
A flower produces nectar to attract bees.
A plant produces thorns to deter herbivores.
A flower mimics the appearance of a female insect to attract male pollinators.
A plant produces a fruit that contains seeds, which are then dispersed by the animal that eats the fruit.
A plant grows taller to reach more sunlight.
Unripe fruits are hard and tart. Ripening is a process that sweetens and softens the fruit to
make it more attractive to animals who will eat the fruit and disperse the seeds. A plant
hormone, ethylene, leads to the ripening of many fruits. Once ethylene starts being pro-
duced, it initiates a feedback loop that causes more ethylene to be produced, increasing
the rate of ripening.
Which of the following best identifies and describes the feedback loop initiated by the pro-
duction of ethylene?
A
It is a positive feedback loop because the initiating stimulus causes a subsequent de-
crease in the stimulus.
B
с
D
It is a negative feedback loop because the initiating stimulus causes a subsequent in-
crease in the stimulus.
It is a negative feedback loop because the initiating stimulus causes a subsequent de-
crease in the stimulus.
It is a positive feedback loop because the initiating stimulus causes a subsequent in-
crease in the stimulus.
This plant is referred to as
This plant is referred to as
: Venus flytrap
: butterwort
: sundew
: bladderwort
Chapter 46 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Ch. 46.1 - list six important types of plant hormones?Ch. 46.1 - Prob. 2CYLCh. 46.2 - Explain how the Darwin experiments using caps and...Ch. 46.2 - Prob. 1CTCh. 46.2 - Prob. 2TCCh. 46.2 - Prob. 3TCCh. 46.2 - Agricultural biotechnologists have developed...Ch. 46.2 - explain the roles of plant hormones in seed...Ch. 46.2 - Prob. 2CYLCh. 46.2 - Prob. 3CYL
Ch. 46.2 - Prob. 4CYLCh. 46.2 - Prob. 5CYLCh. 46.2 - Prob. 6CYLCh. 46.3 - Although insects are major plant predators,...Ch. 46.3 - Prob. 1HYEWCh. 46.3 - explain how plants that are attacked by predators...Ch. 46.3 - explain how plants that are attacked by predators...Ch. 46.3 - Prob. 3CYLCh. 46.3 - Prob. 4CYLCh. 46.3 - Prob. 1TCCh. 46 - Prob. 1MCCh. 46 - Prob. 2MCCh. 46 - Prob. 3MCCh. 46 - Prob. 4MCCh. 46 - Prob. 5MCCh. 46 - Prob. 1FIBCh. 46 - Prob. 2FIBCh. 46 - Prob. 3FIBCh. 46 - Prob. 4FIBCh. 46 - The hormone _________ causes stomata to close when...Ch. 46 - Compare phototropism and gravitropism in roots and...Ch. 46 - Prob. 2RQCh. 46 - What is a phytochrome? How do the two forms of...Ch. 46 - Which hormones cause fruit development? Which...Ch. 46 - What is senescence? Describe some changes that...Ch. 46 - Prob. 6RQCh. 46 - Describe one example of a plant chemical defense...Ch. 46 - Describe how a sensitive plant closes its leaves....Ch. 46 - A student reporting on a project said that one of...Ch. 46 - Prob. 2AC
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- Using a plant like peppermint can help farmers because... It can attract pests to it instead of the crops It can scare away pests It attracts natural predators of common plant pests It releases pheromones to attract pollinatorsarrow_forwardSome plants in wetter climates release certain chemicals in response to leaf consumption by insects. These chemicals may either repel the leaf-eaters and/or attract other insects that will consume the leaf-eaters. A researcher was interested in whether desert plants emitted the same types of compounds. Desert plants have different kinds of leaves compared to plants from less arid areas. The researcher harvested Coville’s lip fern (Cheilanthes covillei) from deserts in Utah to bring into a greenhouse. The plants were 12 – 15 cm (5 – 6 in) tall. Each plant was placed in a separate pot, and there were 40 pots in all. Each pot was assigned to one of four “leaf eater” treatments: a control (i.e., no insects); 5 hornworms; 5 leaf bugs; or 5 flea beetles. Then the researcher measured the emission rate of a particular repelling compound from each plant once every hour for a total of 8 hours (8:00 am – 4:00 pm). Based on this scenario, please answer the following questions: a) What is the…arrow_forwardWhat is the purpose of the fruit we (and other animals) eat, from the plant's perspective? Group of answer choices To create something attractive to pollinators. To create a food item that ensures humans will continue to farm them. To bring in more than one type of pollinator. To entice us to eat the seeds contained inside the fruit, and thus disperse the seeds.arrow_forward
- The hormone abscisic acid provides advantages to plants in stress conditions by Select one: inhibiting the growth of nearby plants and so reducing competition attracting beneficial predatory insects increasing tolerance to environmental stressarrow_forwardThis plant is referred to as This plant is referred to as : bladderwort : Venus flytrap : Pitcher plant : sundew : butterwortarrow_forwardWhich of the following is most likely NOT an example of a plant defense to herbivory? Lignin in the tissues Urushiol production (e.g. in poison ivy) Coconut huskarrow_forward
- i) list TWO adaptations that show that the plant conserves water.ii) Photosynthetic cells produce starch and may be stored. Describe how one may test for the presence of starch on a piece of potato tissue. iii) Give TWO characteristics of monocotyledonous plants. d. The transition of plants from an aquatic environment to a terrestrial one has broughtabout many evolutionary adaptations for plants to survive on land. Give ONE adaptationfor each of the following divisions:i) Mosses: ii) Gymnosperms.arrow_forwardWhich of the following hormones are NOT matched with the proper function? abscisic acid- promotes leaf abscission cytokinins-stimulates cell division ethylene- promotes fruit ripening gibberellic acid- promotes stem elongation auxin-promotes increases in cell sizearrow_forwardOpenings in the plant body to allow for gas exchange are termed palisade cells collenchyma stomata spiraclesarrow_forward
- Doug 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_forwardPlease answer question 2arrow_forwardResearch on examples of parasitic plants and predator plants.Give an example for each.What structural adaptations are present in these plants that allow them to acquire nutrition through parasitism and predation?arrow_forward
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