Question

Which of the following statements is correct about human sperm?
A) Sperm lysins in acrosome dissolve egg envelopes facilitating fertilization.
B) Acrosomes serve as sensory structures leading sperm towards the ovum.
C) Acrosome has no particular function.
D) Acrosome has conical tips for piercing and penetrating eggs for fertilization.

Answer 1

Hint: Spermatogenesis is the one type of gametogenesis, which is defined as the formation of sperm. Sperm formed in the seminiferous tubules.

Complete answer:
Human sperm also known as spermatozoon.Sperm made up of four different parts: Head, neck, middle piece and tail.They are very small, streamlines, and mobile.Sperm head is flat and oval in structure and is composed of nucleus and acrosome.Nucleus contain large posterior portion on the other hand acrosome have small anterior portion and it is made of condensed DNA and proteins.
Acrosomes made up of Golgi complex.In the Acrosome, hydrolytic enzymes are present which help the dissolve the egg envelope facilitating fertilization.

Additional information:
>Neck of the sperm is short and has two centrioles. These two centrioles are having their own function like the proximal centrioles perform the first cleavage of the zygote and distal centriole play the role in the rise of axial filament of the sperm.
>Middle piece is a cylindrical piece. Middle piece holds the lot amount of mitochondria which is closed coiled around the axial filament. The main function of the mitochondria is to provide the energy for movement of sperm.
>Tail of sperm is very long, slender and tapering. It is made of cytoplasm. Tail is the end part of sperm.

Note:Middle piece known as power house because it is source of energy. The amount of energy in sperm is limited which is available only for 24-28 hours, after that it exhausts and die.