Question

The head of sperm contains the nucleus having a haploid set of chromosomes in a

• A.
  compact and inactive state
• B.
  compact and active state
• C.
  rate and inactive state
• D.
  rare and active state

Answer 1

The correct option is B

compact and active state
A sperm is usually a small, compact cell, composed of a head, neck, a middle piece and a tail. It is highly specialized for the task of fertilizing an egg. The head of the sperm contains an elongated haploid nucleus having a halpoid set of chromosomes in a compact and active state. This is because the main function of sperm is to fertilize the ovum. The nucleus holds the DNA of the cell. The anterior portion of the sperm head is covered by a cap-like structure, acrosome. The acrosome is filled with enzymes, that help in fertilisation of the ovum. The head also contains enzymes that help the sperm break through the cell membrane of an egg.

A plasma membrane envelops the whole body of sperm. The middle piece possesses numerous mitochondria, which produce energy for the movement of tail, that facilitate sperm motility essential for fertilisation.

Thus the correct answer is option "b".