1.

Columella is a specialized structure found in the sporangium ofA. UlothrixB. RhizopusC. SpirogyraD. None of these

Answer» Correct Answer - B
The sporangium of Rhizopus is appear to be divide into two region, i.e., Outer fertile sporiferous zone and a central sterile columella. The protoplast of the sporiferous zone cleave mitotically to form dark coloured multinucleate spores.


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