Questions: These may be used to assess annual elongation (primary growth) of branches of some deciduous (annually lose their leaves) woody plants. internodes stomata bud scare scars nodes lenticels

The answer is: bud scale scars.

Explanation for each option:

1. Internodes: These are the segments of a plant stem between the points where leaves are attached (nodes). While they are part of the growth structure, they are not specifically used to assess annual elongation.

2. Stomata: These are small openings on the surface of leaves and stems that allow for gas exchange. They are not related to measuring growth or elongation.

3. Bud scale scars: These are marks left on a branch when a bud scales fall off as the bud opens and grows. Each set of bud scale scars marks the end of one year's growth and the beginning of the next, making them useful for assessing annual elongation.

4. Nodes: These are points on a stem where leaves, branches, or flowers are attached. While they are important in plant structure, they do not specifically indicate annual growth.

5. Lenticels: These are small, spongy openings in the bark of woody plants that allow for gas exchange. They are not used to measure growth or elongation.

In summary, bud scale scars are the most relevant feature for assessing the annual elongation of branches in deciduous woody plants.