Prepare for NEET Biology Human Reproduction with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert solutions for reproductive physiology.
What structure releases enzymes to help the sperm penetrate the ovum?
Nucleus
Mitochondria
Acrosome
Flagellum
During fertilization, the acrosome reaction releases enzymes that help the sperm penetrate the:
Corona radiata
Perivitelline space
Plasma membrane of the ovum
Zona pellucida
The process of implantation typically begins approximately how many days after fertilization?
2-3 days
6-10 days
14-16 days
20-24 days
Which hormone plays a crucial role in facilitating implantation by preparing the uterine endometrium?
Estrogen
LH
FSH
Progesterone
The part of the blastocyst that forms the embryo proper is the:
Trophoblast
Blastocoel
Zona pellucida
Inner cell mass
Which enzyme facilitates the entry of sperm into the ovum by dissolving the corona radiata?
Acrosin
Zona lysin
Hyaluronidase
Capacitation factors
The cortical reaction in the ovum prevents:
Implantation
Cleavage
Gastrulation
Polyspermy
