Question

Colocasia (taro) is an example
A: Rhizome
B: Tuber
C: Bulb
D: Corm

Answer 1

Hint: Colocasia is mainly grown in subtropical regions and is called “taro’ or “Kalo”. It is a type of root vegetable belonging to the family Araceae.

Complete step by step answer:
A. Rhizomes: These are the stems that run along the surface of the soil below or above rather than growing upwards. They are used for the storage of food. The rhizome branches out and each branch develop roots and shoots and give rise to the new plant, i.e. ginger
B. Tuber: These are undifferentiated stems or enlarged hypocotyl. They lack tunic and have eyes. Eyes are the growing regions in tubers. Example: potato
Bulb: It is a short stem with leaves that serve as storage organs. Some bulbs have papery skin or tunic covering and are known as tunicate bulbs. While some don't have tunic covering, example lilies. Roots grow from the basal plate. New bulbs are produced from true bulbs and are called offsets. Scales store food in bulbs.
Corm: Corms are underground stems rich in starch. They are covered by the tunic and also have a basal plate with a growing point. These are stem tissues developed to store food. New corm replaces the mother corm before the mother corn withers away. Example, the corm ofColocasia.
Hence, the correct answer is option D.

Note: Colocasia emerges from a corm which is swollen underground stem. It helps in storage of food during adverse conditions. The corm has internodes and a basal plate with growing regions and tunic which is protective in nature. Corms produce adventitious roots.