Which type of inflorescence is characterized by an indeterminate main floral axis that continues to grow while producing flowers laterally in an acropetal succession?

Answer and explanation

Correct answer: A. Racemose inflorescence

  1. Step 1: Inflorescences are classified based on whether the main floral apex continues to grow indefinitely or terminates in a flower.
  2. Step 2: In a racemose inflorescence, the main axis shows indeterminate growth and flowers are borne laterally in acropetal succession (older flowers at base, younger at apex).
  3. Step 3: In cymose inflorescences, the apex terminates in a flower, exhibiting determinate growth with basipetal succession.
Answer
Racemose inflorescence
Why not the others: 'Cymose inflorescence' has a determinate axis ending in a flower with basipetal sequence; 'Hypanthodium inflorescence' is a specialized hollow cup-like fleshy receptacle bearing internal unisexual flowers (e.g., Ficus); 'Verticillaster inflorescence' is a condensed dichasial cyme characteristic of the Lamiaceae family (e.g., Ocimum).

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