Multiple choice

Pinna means

  1. main leaf

  2. rachis

  3. feather

  4. lamina
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The word 'pinna' comes from Latin, meaning 'feather' or 'wing'. In compound leaves, pinnae (leaflet divisions) are arranged like the barbs of a feather. This etymology reflects the feather-like appearance of pinnately compound leaves, where leaflets are arranged along both sides of a central rachis.

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