AP BIOLOGY

Detailed explanation-1: -Initially discovered by Robert Hooke in 1665, the cell has a rich and interesting history that has ultimately given way to many of today’s scientific advancements.

Detailed explanation-2: -So, the correct answer is ‘Cork’

Detailed explanation-3: -The first man to witness a live cell under a microscope was Anton van Leeuwenhoek, who in 1674 described the algae Spirogyra. Van Leeuwenhoek probably also saw bacteria.

Detailed explanation-4: -While observing cork through his microscope, Hooke saw tiny boxlike cavities, which he illustrated and described as cells. He had discovered plant cells! Hooke’s discovery led to the understanding of cells as the smallest units of life-the foundation of cell theory.

Detailed explanation-5: -Van Leeuwenhoek was one of the first people to observe cells, much like Robert Hooke. Van Leeuwenhoek’s main discoveries are: infusoria (protists in modern zoological classification), in 1674. bacteria, (e.g., large Selenomonads from the human mouth), in 1683.