Question

Rhizome of ginger is a modification of stem because:
A) It bears adventitious roots
B) It bears nodes and internodes
C) It is underground
D) It stores food material

Answer 1

Hint: They are the structural components of the stem in a vascular plant. They perform a vital role in the process of photosynthesis, respiration and transpiration in the plants. They also provide structural support to the parts of the plants.

Complete Answer:
- The stem of the plant is basically divided into the nodes and the internodes.
- Rhizome of ginger is a modification of stem in vascular plants because it bears internodes and nodes.
- Rhizome is found under the ground and they send roots and shoots with the help of nodes outside the ground. The other name of rhizomes is the creeping root stalks of the plant. The development of rhizomes takes place from the axillary buds.
- They grow perpendicular or diageo tropically to the force of gravity. The rhizome has also features of retaining the ability to allow the shoot of the plants to grow upwards.

Thus, the complete answer is option ‘B’ i.e., It bears nodes and internodes.

Note:
- The rhizome of ginger is the underground plant stem that is capable of producing the shoot and root systems of the new plants. It belongs to the family of Zingiberaceae.
- Rhizomes are used to store starches and proteins that enable the plants to survive in unfavourable conditions.
- Nodes and internodes are the components of the stem in the vascular plants that perform an important role in the transpiration, respiration and photosynthesis process of the plants.