Question

why cork could not be observed as such as hook​

Answer 1

A cork is a solid structure so hook was unable to observed it under his crude microscope.He then made slices of cork and observed them under his microscope.

Answer 2

Answer:

Cork is a strong structure, so Hook was unfit to watch it under his crude microscope. He at that point made cuts of cork and watched them under his microscope. He found that the cork was made of box-like compartments shaping a honeycomb structure. He named these compartments as cells. Hook proved his observation on cork slices to scientist at Royal Society of London.