Identify the true/false statements. Correct each false statement to make it true.
Change of voice and discharge of semen are the signs of puberty in human male.
Puberty:
Final Answer: The given statement is true.
Identify true/false statements. Correct each false statement to make it true.
(a) Androgens are produced by Sertoli cells. (True/ False)
(b) Spermatazoa get nutrition from Sertoli cells. (True/ False)
(c) Leydig cells are found in ovary. (True/ False)
(d) Leydig cells synthesis androgens. (True/ False)
(e) Oogenesis takes place in corpus luteum. (True/ False)
(f) Menstrual cycle ceases during pregnancy. (True/ False)
(g) Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/ False)
State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook.
(a) Cutting a log of wood into pieces is a chemical change. (True/False)
(b) Formation of manure from leaves is a physical change.
(True/ False)
(c) Iron pipes coated with zinc do not get rusted easily. (True/False)
(d) Iron and rust are the same substances. (True/False)
(e) Condensation of steam is not a chemical change. (True/False)