Question

how is a stem different from stem tuber​

Answer 1

Answer:

The stem is differentiated into nodes and internodes. Leaves and branches develop on stem. Stem tuber: A stem tuber forms from thickened rhizomes or stolons.

Answer 2

Answer:

1. The tuber represents a swollen stem.

2. Stem tuber arises at the tip of an under­ground branch.

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3. It does not bear roots in the intact condition.

4. The surface of the tuber bears a number of spirally arranged eyes.

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5. Each eye represents a node. The distance between the two adjacent nodes is an internode.

6. Each node or eye consists of a scale leaf and one or more buds.

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7. The tip of the tuber possesses an apical bud.

8. An exposed stem tuber can develop chlorophyll.

9. It has a stem like internal anatomy.

Difference # Root Tuber:

1. The tuber represents a swollen root.

2. Root tuber can arise from any part of the root.

3. Several finer root branches can arise from it.

4. Eyes are absent.

5. Nodes and internodes are absent.

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6. Scale leaves and axillary buds are absent. Adventitious buds are, however, present.

7. Apical bud is absent.

8. Chlorophyll does not develop in a root tuber.

9. It has a root like internal anatomy.