Questions

The principal hormone secreted by the corpus luteum is progesterone. Menstruation is triggered by a drop in the levels of progesterone.

Norway is the top most country in the world's happiest country's list 2017 and India ranks 122nd in the list below than the Pakistan and Bangladesh. 

The genetic information of the cell is DNA and is stored in the nucleus of the cell.

Article 370 of the Indian constitution used to give special provision to the region of Jammu and Kashmir. It allows the state to have its own constitution, a separate flag and independence over all matters except foreign affairs, defence and communications. It was adopted in 1947 by then Prime Minister Jawaharlal Nehru.

Glass Box (or white box) testing is the process of giving i/p to the system and checking how the system processes i/p to generate o/p

Black Box testing is the process of giving i/p to the system and checking if the system is giving correct o/p without bothering how the o/p is generated.

As we can see from the definitions, the role of black box testing is to ensure that the o/p generated is correct. And role of white box testing is to ensure that methods used to generate the o/p are correct.