The answer is; A
This is a symbiotic relationship. The mycorrhiza is harbored I the roots of the orchids. The fungi nitrify the soil around the plant. Therefore, the fungi make nitrates (which are critical for the growth of the plant) available to the plant. The fungi, on the other hand, are assisted in breaking down of large carbon polymers by the orchids because the plant’s enzyme is more powerful than those of the fungi.
Cancer is a type of harmful mutation.
The name of the part which stores genetic information in animal cells is cytoskeleton!
Gram staining
Gram-positive turns pink or red
Gram negative turns dark blue or purple