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lab_quiz8
Course: PP 315, Spring 2008School: N.C. State
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quiz Lab 8 Date________ NAME___ ____________ 1. (1 pt) What is a basidiocarp? A basidiocarp, or mushroom, is formed when two compatible hypha merge creating a dikaryotic mycelium. 2. (2 pts) What two spore types are found in smut diseases? Are smut diseases monocyclic or polycyclic? Teliospores and badiospores are found in smut diseases. Smut diseases are monocyclic. 3. (1 pt) What is the survival spore for rust...
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quiz Lab 8 Date________
NAME___ ____________
1. (1 pt) What is a basidiocarp? A basidiocarp, or mushroom, is formed when two compatible hypha merge creating a dikaryotic mycelium. 2. (2 pts) What two spore types are found in smut diseases? Are smut diseases monocyclic or polycyclic? Teliospores and badiospores are found in smut diseases. Smut diseases are monocyclic. 3. (1 pt) What is the survival spore for rust diseases? The teliospores serve as the survival spore in rust diseases.
4. (2 pts) What is a dikaryon? Where is it found in a typical rust or smut cycle? A cell that has two different haploid nuclei that are sexually compatible.
5. (2 pts) Compare autoecious and heteroecious. Give a disease for each. Autoecious rusts, such as Coffee Rust, produce all spore types on one host plant. Heteroecious rusts, such as Cedar Apple Rust, produce only one spore and type require an unrelated host to reproduce
6. (2 pts) Compare microcyclic and macrocyclic. Give a disease for each. Microcyclic is a rust fungus, such as Hemlock Twig Rust, that produces only teliospores and basidiospores. Macrocyclic is a rust fungus, such as Pine-Oak Gall Rust, that exhibits all five stages of the rust life cycle.
7. (2 pts) In macrocyclic rust diseases, what spore type infects the primary host? What spore type infects the secondary host? Aeciospores infect the primary host and basidiospores infect the secondary hosts.
Find the following answers online or in the library. 8. (1 pt) What is the aecial (alternate) host of goldenrod rust? Pine Needle Rust
9. (1 pt) What is the aecial (alternate) host of touch-me-not (impatiens) rust? Puccinia graminis 10. (1 pt) What pathogen causes orange rust on Kentucky bluegrass? Puccinia graminis
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