Short answer. No. Rule 34, Section 1 lets a court render judgment on the pleadings when an answer fails to raise an issue or admits the material allegations, but it carves out annulment, declaration of nullity, and legal separation cases: in those actions, the material facts alleged in the complaint must always be proved, regardless of your spouse's answer.
What the law says
Where an answer fails to tender an issue, or otherwise admits the material allegations of the adverse party's pleading, the court may, on motion of that party, direct judgment on such pleading.
Rule 34, Section 1 — Judgment on the pleadings. Read the full provision →
What the law says
in actions for declaration of nullity or annulment of marriage or for legal separation, the material facts alleged in the complaint shall always be proved
Rule 34, Section 1 — Judgment on the pleadings. Read the full provision →
The general rule: an undisputed answer can end an ordinary case early
Rule 34, Section 1 lets a court shortcut a case where the defendant's answer does not really contest it: where an answer fails to tender an issue, or otherwise admits the material allegations of the adverse party's pleading, the court may, on motion of that party, direct judgment on such pleading. In an ordinary civil case, an answer like the one your spouse filed, one that does not dispute the allegations, could support a judgment on the pleadings without a trial on the merits.
Annulment and nullity cases are expressly carved out
The same section then draws a line around your kind of case specifically: in actions for declaration of nullity or annulment of marriage or for legal separation, the material facts alleged in the complaint shall always be proved. That exception applies regardless of how the answer reads. Whether your spouse's answer denies everything, admits everything, or simply fails to contest the allegations, the rule still requires the facts to be proved in an annulment case.
What this means for your petition
Because the rule uses the word always, an uncontested or non-disputing answer from your spouse does not let the court skip straight to a judgment on the pleadings. You still need to present proof of the material facts alleged in your petition, the same as if your spouse had actively opposed every point. Your spouse's silence or non-disagreement on the allegations does not substitute for that proof.
Why this differs from an ordinary contract or collection case
The contrast with the general rule is the point of the exception. In a typical civil suit, a defendant's failure to genuinely dispute the allegations can end the matter on the papers alone. Rule 34, Section 1 deliberately removes that shortcut for the three actions it names, annulment, declaration of nullity, and legal separation, so that a marriage is not dissolved simply because neither side chose to argue about the facts in the pleadings.