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#Ascomycetes

9 public questions tagged with this topic.

Which of the following fungi belonging to Ascomycetes is extensively used in biochemical and genetic research?

According to the NCERT Biological Classification chapter, several members of Ascomycetes have massive economic or scientific importance. While Claviceps and Aspergillus are notable, 'Neurospora' is explicitly highlighted as being utilized extensively and heavily in fundamental biochemical and genetic work. It served as the primary model organism that helped scientists decipher fundamental genetic pathways and the one-gene-one-enzyme hypothesis in early biology.

Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.3 Kingdom Fungi

In Ascomycetes, the asexual spores are called conidia. How and where are they produced?

The NCERT text details the reproduction of Ascomycetes by explaining that their asexual spores are known as conidia. A critical distinguishing feature of conidia is that they are produced 'exogenously' (on the outside, rather than enclosed in a sac) at the tips of highly specialized structural hyphae known as conidiophores. Upon dispersal and germination, these conidia quickly develop into a new mycelium.

Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.3 Kingdom Fungi

Members of the class Ascomycetes are commonly and broadly referred to as:

Ascomycetes represent a very large and diverse class of fungi, ranging from unicellular yeasts to complex multicellular forms like Penicillium. The NCERT textbook notes that because their specific sexual spores (ascospores) are uniquely produced endogenously within tiny, microscopic sac-like structures called asci (singular: ascus), they are commonly and universally referred to as 'sac-fungi' in biological literature.

Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.3 Kingdom Fungi