Gametogenesis, fertilization & implantation MCQ 6+

Test your knowledge with important Gametogenesis, fertilization & implantation MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 36+ more Gametogenesis, fertilization & implantation MCQs on Bissoy. Bissoy App

• Human spermatozoa
  ক

  Contain 23 chromosomes

  খ

  Require FSH and testosterone for development

  গ

  Are motile in seminiferous tubule

  ঘ

  Need body temperature for storing

  ঙ

  Are mostly bifid
• The following times are correct
  ক

  The dividing zygote (fertilized ovuis in the uterine tube for about 3 days

  খ

  The uterine cavity is obliterated by the fusion of the decidua capsularis and decidua parietalis at about the 15th week of pregnancy

  গ

  The blastocyst embeds in the uterine wall about 15 days after fertilization

  ঘ

  An ovum can be fertilzed for 4 days after ovulation

  ঙ

  If pregnancy occurs the corpus luteum degenerates within 10 days of its formation
• The human oocyte
  ক

  Is about 100-150 m in diameter when the ovarian follicle ruptures

  খ

  Undergoes the second meiotic division after fertilization

  গ

  Is surrounded by a layer of cells called the stratum granulosum

  ঘ

  Undergoes the first meiotic division after ovulation

  ঙ

  Undergoes the second meiotic division after the disappearance of the zona pellucida
• The trophoblast
  ক

  Is formed from their outer layer of cells of the blastocyst

  খ

  Is the means whereby the embryo embeds itself in the wall of the uterus

  গ

  Forms the wall of the chorionic villi

  ঘ

  Consists of an outer cytotrophoblast and an inner syncytiotrophoblast

  ঙ

  Can digest other layers in addition to the endometrium of the uterus
• To prevent polyspermy, fertilization initiates the cortical reaction which involves
  ক

  Alteration of the binding affinity of sperm receptors on the surface

  খ

  Inhibition of the acrosomal reaction in subsequent sperm

  গ

  Release of the contents of the cortical granules by fusion with the plasma membrane

  ঘ

  Development of gap between the zona pellucida and the plasma membrane

  ঙ

  Rapid membrane repolarization
• Barr body is
  ক

  Found in interphase of the cell cycle

  খ

  Discovered by Murray Llewellyn Barr

  গ

  Located just below the nuclear membrane

  ঘ

  Absent in normal male

  ঙ

  Diagnostic of a genetic female