All the florets are disc florets in _______.
-
vernonia
-
launaea
-
sunflower
-
tridax
A
Correct answer
Explanation
Vernonia (a genus in Asteraceae) is characterized by having only disc florets and no ray florets. This makes it different from sunflowers, Tridax, or Launaea which typically have both ray and disc florets in their capitulum (inflorescence head).