structural organisation in plants Questions

Axile placentation is present in:

Among china rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?

Flower are unisexual in:

Tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem:(a) Secondary cortex, (b) Wood, (c) Secondary phloem, (d) Phellem