7 public questions tagged with this topic.
In Basidiomycetes, karyogamy and meiosis occur in the basidium, usually producing four basidiospores. These spores are formed exogenously on the basidium, and the basidia are arranged in basidiocarps.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Fungi - Deuteromycetes and Economic Importance
Sex organs are absent in Basidiomycetes. Plasmogamy occurs through the fusion of two vegetative or somatic cells belonging to different strains or genotypes, producing a dikaryotic structure.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Fungi - Deuteromycetes and Economic Importance
In Basidiomycetes, asexual spores are generally not found. Vegetative reproduction by fragmentation is common, while sexual reproduction ultimately results in the formation of basidiospores.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Kingdom Monera - Archaebacteria and Eubacteria
The statement 'Asexual spores are generally found and are called conidia' is distinctly incorrect for this specific class. clearly and explicitly states that in Basidiomycetes, 'asexual spores are generally not found'. Instead, they rely heavily on vegetative reproduction by fragmentation, and sexual reproduction (which lacks specific sex organs, relying on the fusion of vegetative somatic cells).
Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.3 Kingdom Fungi
Reproduction in Basidiomycetes is highly specific. After karyogamy and meiosis occur within the specialized club-shaped microscopic structure called the basidium, four haploid sexual spores are generated. The NCERT textbook distinctly specifies that these four 'basidiospores' are produced 'exogenously' (they bud outward and sit on the external surface of the basidium), unlike ascospores which are produced endogenously inside a sac.
Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.3 Kingdom Fungi
The NCERT textbook introduces Basidiomycetes by listing their most commonly known, visible, and sometimes edible macroscopic forms. These include mushrooms, bracket fungi (often seen growing on tree logs), and puffballs. They typically grow in soil, on fallen logs, tree stumps, and occasionally as harmful plant parasites (like rusts and smuts) that cause immense damage to agricultural cereal crops.
Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.3 Kingdom Fungi
