Haploid Ovum: Also known as Ootid

The haploid ovum is the female reproductive cell produced by the ovary. It is also known as the egg cell or the female gamete. The ovum is a highly specialized cell that is essential for sexual reproduction in humans and many other animals. The term "haploid" means that the ovum contains only one set of chromosomes, which is half the number found in other cells of the body. Therefore, the ovum has 23 chromosomes in humans, while other body cells have 46 chromosomes.

The process of producing the haploid ovum is called oogenesis. It begins before birth and continues until menopause. During oogenesis, the ovary produces immature ova called oocytes. These oocytes undergo meiosis, a process of cell division that reduces the number of chromosomes by half, to form haploid ovum. The ovum is then released from the ovary into the fallopian tube, where it may be fertilized by a sperm to form a zygote.

The term "ootid" is another name for the haploid ovum. It is used to describe the ovum immediately after completion of meiosis II. At this point, the ovum has completed its maturation process and is ready for fertilization.

In conclusion, the haploid ovum is also known as the ootid, which is a highly specialized female reproductive cell produced by the ovary through oogenesis. It contains only one set of chromosomes and is essential for sexual reproduction in humans and many other animals.

Just before the fusion of pronuclei or just after 2nd meiotic division the cell is called ootid.