Railway Science (Biology-Reproduction in Animals) (Part-III)

Vas deferens is a part of the male reproductive system. It is a duct that carries sperm from the epididymis to the ejaculatory duct during ejaculation.

The male reproductive system is responsible for sexual function and urination. The external organs include the penis, scrotum and testicles. Internal organs include the vas deferens, prostate and urethra.

These animals typically have a specific breeding season, during which they mate and produce offspring. This reproductive behavior is characteristic of many species in the animal kingdom, including mammals, birds, and certain reptiles.

Sexual Reproduction : It is the combination of reproductive cells from two individuals to form a third unique offspring. Asexual Reproduction : In which a new offspring is produced by a single parent.
The new individuals produced are genetically and physically identical to each other. Types - Binary Fission : The parent cell divides into two cells. Example - Amoeba and euglena.
Budding : Hydra is an organism that reproduces by budding. Fragmentation: The parent body divides into several fragments and each fragment develops into a new organism. Vegetative Propagation : Occurs through their vegetative parts such as leaves, roots, stems, and buds.

It is a tissue that surrounds the embryo in the seeds of angiosperms and provides nutrition to it in the form of starch and protein.
Ovary - a female reproductive organ that produces female gametes and after fertilization, it develops to become a fruit.
Ovule - Present inside the ovary that develops into female reproductive cells and after fertilization, it develops into a seed.

A primary sex organ is an organ which produces gametes-sperms in male and ova in females. This is done by testes in males and ovaries in females. The seminal vesicles are a pair of glands that include the prostate gland and the bulbourethral glands.
The vas deferens transports mature sperm to the urethra in preparation for ejaculation. The prostate is a part of the male reproductive system, which includes the penis, prostate, seminal vesicles, and testicles.

Sexual reproduction is the process of producing a new organism by combining the genetic material of two organisms. The parent contributes half of their genes so the child will have traits of both parents but will not be exactly like either parent.

Syngamy : It can be referred to as the process of fusion of two living cells (male gametes with a female egg) to form a newly developed cell (zygote) with twice the number of chromosomes. It is an essential feature of angiosperms during the process of double fertilization.

Implantation is the process of attachment of zygote to the lining of a uterus. When the fertilized egg pushes itself into the tissue on the wall of the uterus, it is called implantation.
Organogenesis - Within the first 8 weeks of gestation, A developing embryo establishes the rudimentary structures of all of its organs and tissues from the ectoderm, mesoderm, and endoderm.
Gestation period - The development of a child inside the mother's body. In humans it is about 280 days or 9 months.

It produces the egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur. The cervical canal passes through the cervix allowing blood from a menstrual period and a fetus to pass from the womb into the vagina.