The answer is Mutualism because they are both benefiting
They are both <span>multi-cellular, autotrophs, and in the Plants kingdom.</span>
Healthyeating.sfgate.com › Nutrition › Amino Acids<span>CachedSimilar</span><span>If essential amino acids are missing in your foods, your body's first response is to ... Lack of essential amino acids in your diet can also affect your mental health. ... you consume each day supplies you not only with the nine essential amino acids ... your cells can manufacture non-essential cysteine from essential methionine</span>