A peremptory challenge is an objection to a juror for which no reason need be given, but upon which the court must exclude such juror. It can be taken by either party and may be oral. NOTE: Section 85.25 is new; it is substantively the same as § 1069 of the California Penal Code. As to the number of peremptory challenges and whether they must be taken jointly or separately by co-defendants, see § 85.30. As to challenges for cause, see § 85.35. This Chapter deals only with challenges to an individual juror. As to challenges to an entire jury panel, see Code of Civil Procedure § 680.7. Compare Cal. Pen. Code §§ 1055-1065.