Multiple choice

The involucre of head functions like

  1. Calyx

  2. Epicalyx

  3. Corolla

  4. Perianth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An involucre is a whorl of bracts surrounding a flower cluster, and it functions similarly to an epicalyx (an additional whorl of bracts below the calyx). Both are protective structures. Calyx and corolla are the actual flower parts (sepals and petals), while perianth is the collective term for these when they're similar in appearance.

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