Question

Give reasons for the following:
(a) The human testes are located outside the abdominal cavity.
(b) Some organisms like honeybees are called parthenogenetic animals.

Answer 1

(a) Human testes lie outside the human body because it helps in spermatogenesis as the process of sperm formation requires a temperature (2 - 2.5 ${}^0$C) lower than the body temperature.

b) Parthenogenesis is the reproduction from an ovum without fertilization. In honeybees, ovum grows and matures into an individual without fertilization and hence is parthenogenetic.