You are presented with the question "What produces secondary vascular tissues in seed plants?" and the following answer choices: 
- after growth
 - photosynthesis
 - faulty growth
 - Conifers
 - Chlorophyll
 - primary growth
 - plant reproduction
 - secondary growth

Now knowing that secondary growth forms secondary vascular tissues and bark and secondary growth produces wood and bark in seed plants , choose the best answer.


 

        secondary growth 