Which of the following labelled parts produces energy for the movement of the tail that facilitate sperm motility essential for fertilisation?

During embryonic development, the establishment of polarity along anterior/ posterior, dorsal/ventral or medial/lateral axis is called

If the first cleavage furrow divides the zygote completely into two, the cleavage type is

In adults, length and width of testis is about.....repectively

Why the testes in human beings and mammals are situated outside the abdominal cavity within a pouch called scrotum?

Sperms are released from the seminiferous tubules by the process called .....