Answer:
The correct answer would be: increase and specialized respectively.
Explanation:
The process by which embryo forms and develops is called embryonic development or embryogenesis. During embryogenesis, the zygote divides into two cells through mitosis. These cells continue dividing through mitosis and increase cell numbers. During different stages of embryo development cells differentiate into specific cells which later on develops to specific germ layers that later on develop to specific organs.
Thus, the correct answer would be - increase and specialized.