Multiple choice

A single unit of the perianth is called ____.

  1. monoecious

  2. tepal

  3. dioecious

  4. neuter

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When sepals and petals are indistinguishable, individual perianth units are called tepals (as in tulips and lilies). This contrasts with flowers having distinct calyx (sepals) and corolla (petals). Monoecious and dioecious describe plant sexuality, not perianth parts.