Identify the correct statements.

A. Oogenesis is initiated at puberty.

B. Second meiotic division in secondary oocyte occurs in the ovary.

C. Middle piece of sperm provides energy for movement.

D. Fertilization of gametes occur in the ampulla isthmic region of oviduct.

E. Myometrium helps in muscular contractions of the uterus.

Choose the correct answer from the options given below:

C, D, E only

 The correct answer is Option (4):  C, D and E only. 

C.The middle piece of sperm possesses numerous mitochondria, which produce energy for the movement of the tail. This statement is correct. Mitochondria in the middle piece of the sperm provide the necessary energy (in the form of ATP) for the flagellum (tail) to propel the sperm.

D.Fertilization can only occur if the ovum and sperm are transported simultaneously to the ampulla-isthmic region of the oviduct. This statement is correct. Fertilization typically occurs in the ampulla of the oviduct (fallopian tube) when the sperm and egg meet.

E.The middle layer, myometrium exhibits strong uterine contractions during the delivery of the baby. This statement is correct. The myometrium is the middle layer of the uterine wall, and it contracts strongly during labor to push the baby out of the uterus and through the birth canal.

A.Oogenesis is initiated at puberty. This statement is incorrect. Oogenesis begins before birth during embryonic development, and the primary oocytes remain arrested until puberty. Spermatogenesis, on the other hand, starts at puberty in males.

B.Second meiotic division in secondary oocyte occurs in the ovary. This statement is incorrect.The second meiotic division in the secondary oocyte is completed in the fallopian tube after the entry of sperm into the ovum. The secondary oocyte is arrested at the metaphase II stage of meiosis. It only completes meiosis if it is fertilized by a sperm, typically in the fallopian tube.