Question

In which plant the term gregarious flowering is used ?

• A. Teak
• B. Shisham
• C. Bamboo
• D. Rohida

Hint:

Bamboo Flowering Types:
- Gregarious: Simultaneous mass flowering of species over entire regions, followed by plant death.
- Sporadic: Random flowering of individual clumps.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question asks to identify the specific forestry plant group associated with the unique reproductive phenomenon termed 'gregarious flowering'.

Step 2: Concept of Gregarious Flowering:

• Gregarious Flowering: A botanical phenomenon where all plants of a particular monocarpic bamboo species flower simultaneously across an extensive geographic area at the end of a long vegetative cycle ($30--120$ years).

• Post-Flowering Death: Following mass seed production, all culms in the flowering cohort die completely, causing massive forest floor litter and rodent population surges ("Mautam" phenomenon in North-East India).

• Sporadic Flowering: Flowering restricted to individual culms or small isolated clumps.

Step 3: Detailed Explation:

• Timber species like Teak (Tecto grandis), Shisham (Dalbergia sissoo), and Rohida (Tecomella undulata) are polycarpic perennials that flower annually during specific seasons.
• Bamboo species (e.g., Dendrocalamus strictus, Melocan baccifera) undergo long inter-mast periods followed by synchronised gregarious flowering.
• Therefore, the term is uniquely applied to bamboo ecosystems.

Step 4: Fil Answer:
The term gregarious flowering is used for Bamboo. Thus, option (C) is the correct choice.