The protozoan Plasmodium vivax is one of the Plasmodium species capable of causing malaria in humans, and is transmitted by the Anopheles mosquito. The protozoan undergoes one of its developmental stages inside the Anopheles mosquito. With regard to vector-borne transmission, this is an example of:

Question

BlackTom AI · Accepted Answer

Beginning with a broad look, this question asks us to classify the type of vector-borne transmission demonstrated when a parasite develops inside its arthropod vector before infecting a human host.
Option a: Indirect contact transmission. This category typically involves transfer through an intermediate object or surface (fomites) or via the environment, not via an organism that supports a developmental stage of the pathogen. Since Plasmodium vivax relies on biological development inside the mosquito, this option mislabels the mechanism.
Option b: Direct contact transmission. Direct contact implies immediate physical transfer between hosts (like touching, kissing, or sexual contact) without an arthropod or intermediate host. Malaria transmission does not occur through direct person-to-person contact, so this option is incorrect.
Option c: Mechanical transmission. Mechanical transmission occurs when a vector carries an infectious agent on its body parts without supporting any developmental cycle inside the vector (e.g., certain flies transferring pathogens passively). In malaria, the parasite undergoes development within the mosquito’s tissues, which is not merely passive carriage, so this option does not fit.
Option d: Biological transmission. This term refers to pathogens that require development or multiplication within the vector, with the vector acting as an essential host in the pathogen’s life cycle. Plasmodium vivax undergoes development inside the Anopheles mosquito, illustrating true biological transmission.
In summary, each incorrect option fails to capture the essential feature here—the parasite’s developmental progression inside the mosquito—whereas biological transmission accurately describes this scenario.

My LMS Subjects Non-assessed: Topic 2 concept check quiz

The protozoan Plasmodium vivax is one of the Plasmodium species capable of causing malaria in humans, and is transmitted by the Anopheles mosquito. The protozoan undergoes one of its developmental stages inside the Anopheles mosquito. With regard to vector-borne transmission, this is an example of:

View Explanation

Log in for full answers

Similar Questions

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler