Question

Which one of the following is not a modification of stem?

• A. Thorn
• B. Runner
• C. Pneumatophores
• D. Bulbul

Answer 1

Answer:

C. Pneumatophores

Modifications of Stem

• Stems of many plants are modified to perform different functions such as storage, protection, photosynthesis, support, propagation and perennation.

• Modifications help in better adaptation and survival.

• Modified stems can be categorized into three types:

  1. Underground – Rhizome, Bulb, Corm, Tuber

  2. Subaerial – Runner, Sucker, Offsets, Stolon

  3. Aerial – Tendrils, Thorn, Bulbils, Cladode, Phylloclade