Question

What is the largest Eukaryotic cell?

Answer 1

neuron cell

Explanation:

largest known eukaryotic cell is neuronal cells which have been found to be up to 100cm and above in length in some cases

references
http://www.wisegeek.org/what-is-the-largest-biological-cell.htm#didyouknowout

the paper available at http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3019093/ states that the longest neuron estimated is in blue whale paper quotes

The maximum length of adult blue whales is 34 m (American Cetacean Society Fact Sheet: http://www.acsonline.org/factpack/bluewhl.htm) with the estimated maximum length of spinal axons spanning the brainstem to the end of the spine at 30 m (rounded number for clarity)