Question

For mucor zygospore is
A. Thick-walled resting spore
B. Haploid in structure
C. Result of asexual reproduction
D. Germinates to form zoospore

Answer 1

The spore of mold is roofed by a thick wall and could be a resting reproductive structure which suggests it undergoes a resting amount, to avoid unfavorable environmental conditions. Characteristics of the zygosporangium wall like color, photochemical reaction, and chemical makeup (e.g., clear or clear versus opaque, non-carbonaceous versus onerous and carbonaceous).

Complete answer: In Mucor hiemalis Wehmer, for example, all of the germ- sporangiophores obtained from a single germ-sporangium give rise to. colonies which are of the same mating type. Zygospore germination of this type is known as pure heterothallic. Mucor spores or sporangiospores are easy or branched and type top, global sporangia that are supported and elevated by a column-shaped column. Some mould species manufacture chlamydospores. They type mould with irregular non-septate hyphae branching at wide angles (>90°). Mucor mucedo (genus species) use reproduction. once erect hyphae sporangiophores area unit shaped. The tip of the stem swells to create a circular spore case that contains organelle, haploid sporangiospores. associate degree extension of the stem referred to as the pillar protrudes into the spore case. The spore case walls area unit simply busted to unharness the spores that germinate pronto to create a replacement plant part on an acceptable substrate. During reproduction, compatible strains kind short, specialized hyphae referred to as gametangia. At the purpose wherever two complementary gametangia fuse, a thick-walled, spherical zygosporangium develops. The zygosporangium usually contains one spore. Nuclear karyogamy and meiosis (sexual recombination) occur inside the zygospores, that area unit thought to be durable and proof against adverse conditions. they'll germinate to create hyphae or a spore case. Mould include each homothallic (self-compatible) and heterothallic species. The zygospores are usually brown to black; with rough blunt projections or warts. Mucor may be a hyphal flora bodily structure consisting of a fine skinny thread like cannula branch colony mass of plant structure. The unit structure of the plant structure is hyphae. A fibril is coenocytic. A spore could be a diploid fruitful stage within the life cycle of the many fungi and protists. Zygospores are created by the fusion of haploid cells. In fungi, zygospores are fashioned in zygosporangia when the fusion of specialized budding structures, from mycelia of identical (in homothallic fungi) or totally different sexual union varieties (in heterothallic fungi), and should be chlamydospores. In several organism protoctists, together with several species of the division, zygospores are fashioned by the fusion of animate gametes of various sexual union varieties.

Note: Most species of 'Mucor' are unable to infect humans and heat-absorbing animals because of their inability to grow in heat environments about thirty-seven degrees. Thermotolerant species like mold indicus generally cause expedient, and sometimes quickly spreading, necrotizing infections referred to as zygomycosis.