Question

Ray fungi are
(a) Phycomycetes
(b) Ascomycetes
(c) Actinomycetes
(d) Basidiomycetes

Answer 1

Hint: These organisms form a mycelium created by thin hyphae. They possess both fungal and bacterial characteristics. They make up the usual portion of the human mouth flora. They contain several antibiotics, such as streptomycin, chloromycin, and actinomycin.

Complete answer:
Actinomyces is a genus of the bacteria class Actinobacteria. They are mostly  Gram-positive. Initially, the aspect of these colonies led to the incorrect assumption that the organism was a fungus and Actinomyces, "ray fungus’. Mostly they are multicellular. They are parasitic, saprophytic, and decomposers. Examples include Aspergillus, Claviceps, and Neurospora. Neurospora is used extensively in genetic and biochemical work.
Phycomycetes are found in aquatic habitats and moist and humid places on decaying wood, or as obligate parasites on plants. They are known as algal fungi. The mycelium is coenocytic and septate. Some common examples are Mucor, Rhizopus (the mold of bread) , and Albugo (the mustard parasitic fungi).
Club fungi are also called basidiomycetes. Mushrooms, bracket fungi, or puffballs are commonly known as basidiomycetes. They grow as parasites in the soil, on logs and stumps of trees, and in living plant bodies. The mycelium and the septate are branched. Take Agaricus, Ustilago, and Puccinia for example.

So, the correct answer is, ‘Actinomycetes’.

Note: Species of Actinomyces are mainly facultative anaerobic, and grow best under anaerobic conditions. Actinomyces species can form endospores, and actinomyces colonies make fungus-like branched networks of hyphae while individual bacteria are rod-shaped. They have prokaryotic nuclei, are susceptible to antibiotics, and have cell walls close to bacteria, which contain muramic acid.