Textbook Question
Propose an experiment to test whether Pilobolus shoots its sporangia preferentially toward light. Hypothesize why such a preference might be advantageous.
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29. Fungi
Fungi Reproduction
Multiple Choice
Which of the following structures carries out sexual reproduction in ascomycetes?
A
Ascus
B
Conidiophore
C
Basidium
D
Sporangium
Verified step by step guidance1
Understand the context: Ascomycetes are a group of fungi known for their unique reproductive structures. They are part of the phylum Ascomycota.
Identify the key term: The term 'sexual reproduction' in ascomycetes refers to the process where two compatible nuclei fuse to form a diploid zygote, which then undergoes meiosis.
Recognize the structure: The 'ascus' is the sac-like structure where the sexual spores, called ascospores, are formed in ascomycetes. This is the site of meiosis and subsequent spore development.
Differentiate from other structures: A 'conidiophore' is involved in asexual reproduction, producing conidia (asexual spores). A 'basidium' is the reproductive structure in basidiomycetes, not ascomycetes. A 'sporangium' is a structure found in other fungi and plants, not specifically related to ascomycetes' sexual reproduction.
Conclude with the correct structure: Based on the understanding of these structures, the 'ascus' is the correct answer as it is responsible for sexual reproduction in ascomycetes.
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