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Pathogen Entry Mechanisms Quiz

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Questions and Answers

How do most viruses and viroids invade host plants?

Move from cell to cell (correct)

Replicate in plant seeds

Grow between the cuticle and the epidermis

Invade the xylem vessels

Which method is NOT a common way for bacteria to enter host plants?

Natural openings

Wounds

Mechanical entry

Phloem sieve tubes (correct)

How do most nematodes gain entry into host plants?

Invading the xylem vessels

By moving from cell to cell

Using stylets (correct)

Growing on the surface

What is a common method for fungi and Oomycetes to enter host plants?

Growing on the surface Signup and view all the answers

How do bacteria and mollicutes typically reproduce within host plants?

Fission Signup and view all the answers

What is a common method for plant pathogens to move from plant to plant without a vector?

Through mechanical pressure or enzymes they produce Signup and view all the answers

Which of the following is NOT a stage in the disease cycle of a pathogen?

Homeostasis Signup and view all the answers

Which of the following best describes the relationship between a parasite and its host?

Parasitic, where the parasite obtains food from the host, often causing harm Signup and view all the answers

How do obligate parasites differ from facultative parasites in terms of their ability to infect living and dead tissue?

Obligate parasites can only infect living tissue, while facultative parasites can infect both living and dead tissue Signup and view all the answers

Which of the following is a characteristic of pathogenicity?

The ability of a pathogen to cause disease by interfering with essential plant cell functions Signup and view all the answers

How do viruses and viroids differ in terms of their transmission and infection of plant cells?

Viruses are transmitted by vectors and infect plant cells, while viroids are transmitted through contaminated tools and infect plant cells Signup and view all the answers

Which of the following is the primary method by which bacteria and fungi enter and infect plant cells?

Bacteria enter through wounds or natural openings, while fungi penetrate the cell wall directly Signup and view all the answers

What term describes the series of events that occur during the pathogenic relationship of a pathogen and host leading to disease?

Disease cycle dynamics Signup and view all the answers

Which of the following is NOT a step in the disease development process for infectious diseases?

Host reproduction Signup and view all the answers

What is the term for the period between pathogen penetration and the first appearance of symptoms in a plant?

Incubation period Signup and view all the answers

In disease development, how do pathogens primarily enter plants for infection?

Through penetration Signup and view all the answers

Which of the following is characteristic of the symptom observation phase in disease development?

Continued symptom increase Signup and view all the answers