Which hormone initiates spermatogenesis?

What is spermatogenesis ?

Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoried building starts climbing down the stairs rapidly. Which hormone initiated this action ?

Which hormone stimulates the synthesis of testosterone?

“Role of hormones in spermatogenesis” - comment on the statement.

Which one of these stimulates spermatogenesis

The nuclear structure observed by Henking in 50% of the insect sperm after spermatogenesis was:

Write the similarities between spermatogenesis and oogenesis.