I think answer is B. Sorry if it is wrong.
Answer:
When the mold comes in contact with a substrate, such as bread, it first spreads over the surface and penetrates it while sending hyphae inward to absorb the nutrients.
Explanation:
Rhizopus stolonifer grows primarily as mycelia, which consists of long filamentous cells, or hyphae, that lack cross walls, known as septa.
During interphase (1), chromatin is in its least condensed state and appears loosely distributed throughout the nucleus. Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5).
Vitamin niacin ( vitamin B3)
Because it's lighter, flexible, and lastly it's easily to heal. Hope this helps! :D
