The pre fertilisation process stage of sperm before entry into the ovum is called as
Maturation
Insemination
Capacitation
Fertilization
Correct Answer :
C. Capacitation
Related Questions
An abnormal human male phenotype involving an extra x-chromosome (xxy) is found in....
Edwards syndrome
Klinefelters syndrome
Intersex
Downs syndrome.
In infertility treatment the ovum is fertilized outside the body and injected into the uterus
Gamete intra fallopian transfer
Invitro fertilization
Intra uterine insemination
Zygote intra fallopian transfer
In human embryo, the digestive system develops from the
Epithelium
Mesoderm
Endoderm
Ectoderm
Immediately after ovulation, the ovum is covered by a membrane called
Chorion
Zona pellucida
Corona radiata
Vitelline membrane
Third phase of embryo development is ...
Cleavage
Fertilization
Gametogenesis
Gastrulation
Which cells provide nutrition to the sperms?
Sertoli cells
Leydig cells
Crypt cells
Semniferous tubules
Haemophilia is more common in males because it is a
Recessive character carried by y-chromosome
Dominant character carried by y-chromosome
Dominant trait carried by x-chromosome
Recessive trait carried by x-chromosome
A genetically diseased father (male) marries with a normal female and gives birth to 3 carrier girls and 5 normal sons. Find out the type of genetic disease.
Sex-influenced disease
Blood group inheritance disease
Sex-linked disease
Sex-recessive disease
Sickle cell anaemia induce to
Change of amino acid in a- chain of haemoglobin
Change of amino acid in b- chain of haemoglobin
Change of amino acid in both a and b chains of haemoglobin
Change of amino acid either a or b chains of haemoglobin
Erythroblastosis foetalis is caused by fertilization between the gametes of
Rh -ve female and rh+ ve male
Rh+ ve female and rh -ve male
Rh+ ve female and rh+ ve male
Rh~ ve female and rh -ve male
Number of chromosomes in secondary oocyte stage in humans is ...
23
46
18
20
Fertility in women may be impaired by
Hypertension
Gall stones
Obesity
Short stature
Prostate gland produces a secretion for ...
Attracting sperms
Stimulating sperm activity
Inhibiting sperm activity
None of the above
What is Hirsuitism in females? (Usually with Poly cystic ovarian disease)
Unusually tall
Abnormal growth of facial and body hair
Abnormal voice
Short stature
Which part of the foetus is developed from mesoderm?
Heart and notochord
Heart and brain
Spinal cord and notochord
Brain and notochord
The functional unit of testis of man is ...
Uriniferous tubules
Malpighian tubules
Seminiferous tubules
Acini or lobules
After fertilization, implantation of human embryo takes place on
10 th day
14 th day
7 th day
3 rd day
Sertoli cells are found in
Seminiferous tubules
Ovaries
Prostate gland
Semen
The chemical of the ovum that attracts and holds sperm
Fertilizin
Antifertilizin
Agglutin
Antiagglutinin
Human placenta is
Endothelial
Haemochorial
Epitheliochorial
Syndesmochorial
Corona radiata is held by...
Mucopolysaccharide
Oligosaccharide
Lipopolysaccharide
Lipoprotein
Human female reaches menopause at the age of about ...
25 years
35 years
50 years
70 years
Pregnancy test is confirmed by the presence of
Prolactin in urine
Relaxin in urine
H c g in urine
Fsh and lh in urine
The middle piece of the sperm contains
Protein
Nucleus
Mitochondria
Centriole
Name the pituitary hormone that regulates sertoli cells
Prolactin
LH
FSH
Oxytocin
Which one occurs first in the human embryo
Neurogenesis
Cardiogenesis
Hepatogenesis
Osteogesis
After ovulation graffian follicles turns into
Corpus luteum
Corpus albicans
Corpus callosum
Corpus artesia
A marriage between man with normal vision and colour blind woman will give birth to
Colour blind sons and 50% carrier daughter
50% colourblind sons and 50% carrier daughter
Normal males and carrier daughters
Colour blind sons and carrier daughters.
Medical termination of pregnancy is safe till how many weeks of pregnancy?
10 weeks
12 weeks
20 weeks
22 weeks
Part of sperm that passes into ovum is
Tail
Acrosome
Head
Head, neck and middle piece