Describe briefly the structure of a human sperm.

(a) Give a schematic representation showing the events of spermatogenesis in human male. (b) Describe the structure of a human sperm.

(a) Give a schematic representation showing the events of spermatogenesis in human male. (b) Describe the structure of a human sperm.

a. When and where does spermatogenesis in a human male begin to take place? b. With the help of schematic labelled diagrams, trace the development of mature spermatozoa in a human male? c. Describe the structure of a human sperm.

Describe briefly the structure of copper metal.

Explain briefly the structure of human eye.

Describe the structure of human ear.

Describe the structure of mammalian sperm.