Human Reproductive System

This is the correct option. 

This is the correct option. 

Vasectomy is a surgical procedure for male sterilization, involving the cutting or sealing of the vas deferens to prevent sperm from entering the ejaculate.

Mitochondrion is present in the middle piece of sperm as it provides energy (in the form of ATP) to the sperm for entry into the ova and helps in the metabolism of the whole sperm.

Spermatogenesis is the meiotic division through which the sperms are formed. This occurs in scrotal sac. Its main function is to provide the ideal temperature required for sperm formation.

Vas deferens is the reproductive organ found exclusively in males. It is the tube that connects the testes with the urethra. The vas deferens is a coiled duct that conveys sperm from the epididymis to the ejaculatory duct.

Flagella which constitutes microtubular structure is responsible for the movement of sperm. A single flagella is found in human sperm.

During implantation, a zygote is termed as blastocyst. The blastocyst is a structure formed in the early development of mammals. It possesses an inner cell mass (ICM), which subsequently forms the embryo.

This is the correct answer. Fallopian tubes or the oviducts are the female genital organs where fertilisation takes place. 

Formation of fertilization membrane is a sort of defence reaction, primarily meant to prevent entrance of more than one sperm.

Cleavage divisions do not bring any appreciable increasse in the mass of protoplasm in the developing embryo, but there is a marked increase in the chromosomal DNA contents of its cells.

If a sperm carrying Y chromosome fertilises with an egg that carries X chromosome, then the zygote formed will have XY combination due to which the child born will be a male.

Seminal vesicles are not a part of female reproductive system. They are present in males.

The cardinal (Mackenrodt) ligaments are condensations of visceral connective tissue that provide the major support of the uterus and cervix. They extend from the lateral aspects of the cervix and vagina to the posterolateral pelvic sidewalls.

Calcium ions are released upon fertilization, triggering a wave of metabolic activity in the egg, including increased respiration and protein synthesis.