Brock Biology of Microorganisms
15th Edition
ISBN: 9780134626352
Author: MADIGAN
Publisher: PEARSON
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Chapter 23.4, Problem 1CR
Summary Introduction
Mycorrhizae are association that is formed between the
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Describe the importance of mycorrhizae, both today andin the colonization of land. What evidence supports theantiquity of mycorrhizal associations?
Which of the following is an adaptation thatenhances the uptake of water and minerals byroots?(A) mycorrhizae(B) pumping through plasmodesmata(C) active uptake by vessel elements(D) rhythmic contractions by cells in the root cortex
#4 What do hyphae do for a plant partner in a mycorrhizal association?
1.they decrease the surface area for absorbing food for the plant
2.they increase the surface area for absorbing food for the plant
3.they decrease the surface area for absorbing water and nutrients for the plant
4.they increase the surface area for absorbing water and nutrients for the plant
Chapter 23 Solutions
Brock Biology of Microorganisms
Ch. 23.1 - What two microbes form a partnership in the lichen...Ch. 23.1 - Prob. 2MQCh. 23.1 - Prob. 1CRCh. 23.2 - What is the evidence that "Chlorochromatium...Ch. 23.2 - Prob. 2MQCh. 23.2 - How might nutrients be shuttled between phototroph...Ch. 23.2 - QWhat mechanisms do the consortia use to orient at...Ch. 23.3 - Prob. 1MQCh. 23.3 - Prob. 2MQCh. 23.3 - What is a bacteroid and what occurs within it?...
Ch. 23.3 - What are the major similarities and differences...Ch. 23.3 - QDescribe the steps in the development of root...Ch. 23.4 - Prob. 1MQCh. 23.4 - Prob. 2MQCh. 23.4 - How do mycorrhizal fungi promote plant diversity?Ch. 23.4 - Prob. 1CRCh. 23.5 - Prob. 1MQCh. 23.5 - How do the vir genes differ from T-DNA in the Ti...Ch. 23.5 - How has an understanding of crown gall disease...Ch. 23.5 - Prob. 1CRCh. 23.6 - Prob. 1MQCh. 23.6 - What are the consequences of symbiont genome...Ch. 23.6 - How could it be determined if a symbiont and its...Ch. 23.6 - QHow is it possible for aphids to feed only on the...Ch. 23.7 - How are anoxic conditions maintained in the...Ch. 23.7 - Why does reductive acetogenesis predominate over...Ch. 23.7 - Prob. 3MQCh. 23.7 - QHow do the microbial communities of higher and...Ch. 23.8 - Prob. 1MQCh. 23.8 - Prob. 2MQCh. 23.8 - How is the correct bacterial symbiont selected in...Ch. 23.9 - Prob. 1MQCh. 23.9 - What are the similarities of the obligate...Ch. 23.9 - Prob. 3MQCh. 23.9 - Prob. 1CRCh. 23.10 - What evidence suggest that the nematodes and their...Ch. 23.10 - What prevents other bacteria from colonizing the...Ch. 23.10 - QWhy are entomopathogenic nematodes so attractive...Ch. 23.11 - Prob. 1MQCh. 23.11 - What are the two mechanisms of Symbiodinium...Ch. 23.11 - Prob. 3MQCh. 23.11 - Prob. 1CRCh. 23.12 - Prob. 1MQCh. 23.12 - Prob. 2MQCh. 23.12 - Prob. 1CRCh. 23.13 - Prob. 1MQCh. 23.13 - Prob. 2MQCh. 23.13 - Prob. 3MQCh. 23.13 - QGive an example of a single microbial species...Ch. 23 - Imagine that you have discovered a new animal that...Ch. 23 - Prob. 2AQ
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- Hello! Discuss, the adaptations that Orobanchaceae (plant) has evolved to invade and manipulate the hosts (talk about invasion and manipulation) Thank you!!!!!arrow_forwardHow are mycorrhizae and root nodules similar? How are they different?arrow_forward11.a) The roots of legumes, such as peas and beans, have special nodules that are home to large numbers of bacteria. What benefit do these bacteria provide to the plant? What do they receive inexchange? b)Virtually all plant species have some way of protecting themselves against herbivores. Yet there exist many thriving species of herbivores across the globe. Demonstrate how these two realities can coexist. c)Compare and contrast the two types of root systems. Describe the characteristics of each.arrow_forward
- In a college greenhouse, a new employee observes fuzzy mycorrhizae in the roots of all the plants. Destroying no part of the plants, she carefully removes the mycorrhizae. The most immediate result of this cleaning is that the plants cannot: a. carry out photosynthesis. b. absorb water through their roots. c. transport water up their stems. d. extract as much nitrogen from soil. e. store carbohydrates in their roots.arrow_forwardescribe the similarities between the establishment of arbuscular mycorrhizae and legume root nodules. Which is considered to be older evolutionarily? What is the evidence for this?arrow_forwardEcologists often attempt to introduce new plants to restore degraded land. In an arid climate, scientists recommend introducing plants with arbuscular mycorrhizae. How would the mycorrhizae increase the plants’ survival compared to plants without mycorrhizae?arrow_forward
- 1. What is a nutrient? 2. Give the difference between: ◦autotrophs and heterotrophs ◦apoplast and symplast routes ◦macronutrients and micronutrients 3. What is the significance of having root hairs in plant roots? 4. How do plants benefit from symbiotic associations with bacteria? With fungi?arrow_forwardHow will Prunus Persica tree be affect long-term due to climate change?arrow_forwardHow do mycorrhizae function as biofertilisers? Explain with example.arrow_forward
- Define the Root nodules and mycorrhizae ?arrow_forwardThe nutrition of some plants is enhanced by a mutually beneficial association between a root and a fungus. The association is known as _________. a. root nodule c. root hair b. mycorrhiza d. hyphaarrow_forwardThe nutrition of some plants is enhanced by a mutually beneficial association between a root and a fungus. The association is known as a_______ a. root nodule b. myoorrhiza c. root hair d. hyphaarrow_forward
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