Multiple choice

Which of the following types of cell can be seen with the naked eye?

  1. Egg cell of a hen.

  2. Cells of an elephant's brain.

  3. Neurons of a giant squid.

  4. No single cell can be seen with a naked eye.

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A hen's egg is a single cell (the yolk is the actual cell) large enough to be visible to the naked eye. Most neurons are microscopic, and while giant squid neurons are exceptionally long, they are still too thin to be clearly visible without magnification.