What conclusion can you draw about the organisms you observed?Write and evidence-based claim

What was photo 51 with rosalind franklin?

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream