A) Sporangiospores borne in the sporangium of Rhizopus are diploid structures
B) Rhizopus belongs to the class zygomycetes
C) Dominant phase in the like cycle of Chlamydomonas is haploid
D) Zoospores of Chlamydomonas are haploid
Correct Answer: A
Solution :
The young sporangium of Rhizopus contain certain amount of cytoplasm and many nuclei. The sporangium is divided into the denser, peripheral sporiferous zone and the central dome-shaped zone the columella. The protoplast of the columella is continuous with that of sporangiophore. The sporiferous zone undergo cleavage and form haploid sporangiospores.
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