Question

In autumn and winter, cambium produces.

• A. Sap wood
• B. Heart wood
• C. Early wood
• D. Late wood

Answer 1

The correct option is D Late wood

In dicotyledonous stems, during intra stelar secondary growth, intra fascicular camium(primary meristem) and inter fascicular cambium(secondary meristem) joins together and form into a ring of cambium is called vascular cambium. It is partly primary meristem and partly secondary meristem. Its activity is continuous and uninterrupted.

In the plants growing temperate regions, the activity of vascular cambium is influenced by existence of maximum seasonal variations. In the spring or early summer, due to the existence of favourable conditions, large amount of secondary xylem is formed. it is called Spring wood or early wood. In the autumn season, due to the presence of unfavourable conditions, less amount of wood is formed. it is called autumn wood or late wood.

So, the correct option is 'Late wood'.