Multiple choice

When no distinction can be made between petals and sepals, the outer protective whorl is known as a ______.

  1. monoecious

  2. dioecious

  3. naked

  4. perianth

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

Perianth is the collective term for the outer protective whorl when sepals and petals cannot be distinguished. Monoecious and dioecious describe sexual arrangements of flowers on plants. Naked flowers lack a perianth entirely.