Chapter 20, Problem 17A

Summary Introduction

Introduction :

Fungi are classified by their structure and patterns of reproduction. Some fungi only can reproduce asexually through mitosis. Asexual reproduction in fungi also includes fragmentation, budding, and spore production. Many fungi can reproduce both asexually and sexually. Sexually reproducing fungi produce spores by the process of meiosis.

Answer to Problem 17A

Correct answer :

The correct answer is option (D) Chytridiomycetes

Explanation of Solution

Explanation/justification for the correct answer :

Option (D) Chytridiomycetes. The members of Chytridiomycetes are unicellular. Most are aquatic. Some are saprophytic, while others are parasitic. They produce flagellated spores. So, the correct answer is option (D).

Explanation for incorrect answer :

Option (A) Basidiomycetes. Most are multicellular, terrestrial. They are saprophytic, parasitic, or mutualistic. They rarely reproduce asexually. So, this is an incorrect answer.

Option (B) Zygomycetes. The members of Zygomycetes are multicellular, terrestrial. Many form mutualistic relationships with plants. They can reproduce both sexually and asexually. So, this is an incorrect answer.

Option (C) Ascomycetes. Most are multicellular, but some are unicellular. They are found in variety of habitats. They are saprophytic, parasitic or mutualistic. They can reproduce both by sexually and asexually. So, this is an incorrect answer.