Question

Branched, aseptate, coenocytic mycelium is present in
A. Aspergillus
B. Albugo
C. Penicillium
D. Erysiphe

Answer 1

The vegetative part of a fungus or fungus-like bacterial colony is known as mycelium. It is made out of a tangle of thread-like hyphae that branch out. Especially within the fairy ring fungi, the mass of hyphae is sometimes called Shiro. Mycelium-based fungal colonies can be found in and on soil, as well as a variety of other substrates. A typical single spore, which cannot reproduce sexually, germinates into a monokaryotic mycelium.

Complete answer:
Option A. Aspergillus : Aspergillus has a branched hyphae which is separated by intracellular cross walls. The hyphae of Aspergillus are septate and multinucleated. The mycelium grows above the substratum in Aspergillus. Aspergillus is one of the widespread saprophytes and grows on stale bread, fruits, and vegetables.
Hence option A is not correct.
Option B. Albugo : Albugo is an obligate parasite that can be found on a number of flowering plants. The vegetative part of the plant body is composed of branched, non-septate or aseptate and coenocytic hyphae which grows in the intercellular spaces of the host. The hyphal wall is composed of cellulose.
Hence option B is the correct answer.
Option C. Penicillium : A genus of ascomycetous fungi is the Penicillium , which is part of the mycobiome of many species and has a major importance in the natural environment, food spoilage, and in food and drug production. The Penicillium is branched to a great degree with septate hyphae and is composed of thin-walled cells that are made up of one or more nuclei.
Hence option C is not correct.
Option D Erysiphe : Erysiphe is a genus of fungi in the family of Erysiphaceae. Many species of this genus are plant pathogens which cause powdery mildew. They exhibit superficial white mycelium on the surface of the leaf.
Option D is also not correct.

Hence, Option B Albugo is the correct answer.

Note:
Albugo causes white rust or white blister diseases mostly in above ground tissues of plants. Although Albugo affects many types of plants, the destructive aspect of its infection is limited only into a few of the agricultural crops. The white rust is an obligate parasite, which means a living host is needed to grow and reproduce. The Albugo mostly proliferates in wet and moist conditions.