Based upon prior experience, I believe not.
See this 2005 Westjet circular, for instance:
http://www.westjet.com/pdf/investorMedia/financialReports/WestJetInfoCircular2005.pdf
It notes "Pursuant to Section 191 of the ABCA, a WestJet Shareholder may not exercise the right of dissent in respect of only a portion of their WestJet Common Shares"