question_answer 31)

  Match between the following representing parts of the sperm and their functions and choose the correct option.  

Column I	Column II
A. Head B. Middle piece C. Acrosome D. Tall	1. Enzymes 2. Sperms motility 3. Energy 4. Genetics material

Codes A             B             C             D (a)          2              4              1              3 (b)          4              3              1              2 (c)           4              1              2              3 (d)          2              1              3              4

Answer:

                  (b)

Column I	Column II
A. Head B. Middle piece C. Acrosome D. Tall	1. Genetics material 2. Energy 3. Enzymes 4. Sperms motility

  The structure of a sperms composed of a head, neck, a middle piece and a tail. The sperm head contains an elongated haploid nucleus, the anterior portion of which is covered by a cap-like structure, acrosome. The acrosome is filled with enzymes that help in fertilization of the ovum. The middle piece possesses numerous mitochondria, which produce energy for the movement of tail that facilitate sperm motility essential for fertilization.