EVERYDAY SCIENCE

Detailed explanation-1: -Zygospore germination is characterized by the occurrence of meiosis and the resulting haploid nuclei form haploid spores like sporangiospores within the sporangium. So, the correct answer is option B. Promycelium.

Detailed explanation-2: -This zygospore is the only diploid cell in the entire lifecycle. It is thus that same zygospore that later undergoes meiosis to form haploid offspring.

Detailed explanation-3: -Diploid sporophyte cells undergo meiosis to produce haploid spores.

Detailed explanation-4: -The wall between the gametangia dissolves and plasmogamy occurs. The nuclei fuse to form diploid zygospores within the zygosporangium. A sporangium germinates from the zygosporanigum and produces haploid spores via meiosis.

Detailed explanation-5: -Because of the presence of a zygospore, the group of fungi is called zygomycetes.-Zygospore is the site of meiosis and does not give rise to new mycelium directly. Instead it produces a new sporangium called germ sporangium.