BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Chapter 29, Problem 7TY
Summary Introduction
Introduction:
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. Which statement about mycorrhizae is FALSE?
a. They are symbiotic associations between a fungus and a plant root.
b. They increase the uptake of nutrient minerals by the plant.
c. Arbuscular mycorrhizae are extracellular.
d. Endomycorrhizae are intracellular.
e. Members of the Glomeromycota may be involved.
A hypha divided into compartments by cross walls is calleda. nonseptate c. septateb. imperfect d. perfect
Mycelium is a mass of conidia.
A. True
B. False
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- Following infection with a pathogen, one response is to spread an alarm signal to increase defenses and antimicrobial compounds throughout the plant body and the network of plants connected by mycorrhizae. Which chemical spread this alarm signal? Select one: a. Salicylic acid b. Jasmonic acid c. Indole acetic acid d. Gibberellic acid e. Abscisic acidarrow_forwardDefine the following terms: a. granum b. stromal lamellae c. thylakoid lumen d. PSI e. PSIIarrow_forward1. Distinguish taxis from a tropism. 2. What is thigmotaxis? Describe what happens when the Paramecium bumps against something. 3. What is chemotaxis? Does the acid solution cause a positive or negative response in the Paramecium?arrow_forward
- Which of the following cell types remain alive in matureplant tissue?a. sclerenchyma c. tracheidsb. sieve elements d. vessel elementsarrow_forwardWhichof the following is NOT an agent of nitrogen fixation?a.Mycorrhizal fungib.Cyanobacteria (blue-green algae)c.Bacteria associated with legume rootsd.Lightninge.Actinomycete bacteria associated with alder rootsarrow_forwardThe following figure depicts the outline of a large fairy ring that has appeared overnight in an open meadow, as viewed from above. The fairy ring represents the furthest advance of this mycelium through the soil. Locations A-D are all 0.5 metres below the soil surface. A В D 1. Which type of organisms made this structure (it wasn't a fairy!)? What is mycelium? Explain in one sentence each. 2. Which location (A-D) most likely indicates the oldest part of this organism? Explain in 1-2 sentences.arrow_forward
- C. RHODOPHYTA (Red Algae) a. Gracilaria Porphyra Give a brief description of each diagram. Gracilaria Porphyraarrow_forwardMycorrhizae are often found associated with the roots of vascular plants, the best description of this symbiotic relationship is A. mutualistic B. parasitic C. commensalarrow_forwardWhich of the following involve symbiotic relationships? A. mycorrhizae AND ruminants B. ruminants AND myxobacteria C. myxobacteria, ruminants, AND rhizobia D. rhizobia, mycorrhizae, AND ruminantsarrow_forward
- Which of the following structures is the most prominent inside the epidermal cell of Rhoeo discolor leaf? a. chloroplast b. chromoplast c. vacuole d. cell wall e. nucleusarrow_forwardWhich of the following is one of thecommercial products obtained fromGelidium and Gracilaria and are used to grow microbes and in preparations of icecreams and jellies?A. Agar B. ChlorellaC. Spirullina D. Gymnospermsarrow_forwardIn Optimal condition , spores will germinate this means Select one : a . Vegetative cells will form capsule b . Spores will be converted into vegetative cells c . Vegetative cell will form spores d . Spores will be converted into dormant structuresarrow_forward
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