Home
Class 12
BIOLOGY
When the sperm head touches the……… of th...

When the sperm head touches the……… of the egg, a fertilization membrane is formed to avoid polyspermy.

A

corona radiata

B

vitelline membrane

C

germinal vesicle

D

membrana granulosa

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • REPRODUCTION IN LOWER AND HIGHER ANIMALS

    CHETANA PUBLICATION|Exercise Exercise|90 Videos

  • PLANT WATER RELATION

    CHETANA PUBLICATION|Exercise Exercise |97 Videos

  • REPRODUCTION IN LOWER AND HIGHER PLANTS

    CHETANA PUBLICATION|Exercise Exercise |40 Videos

Similar Questions

Explore conceptually related problems

State whether the following statements are true or false. Correct the false statement: During fertilization, mitochondria is contributed by the sperm cell and egg cell (ovum).

Rakesh got hurt on his head when he fell down from his motorbike. Which inner membranes must have protected his brain? What other roles do they have to play?

Diagram based Questions. Fill in the blankd: …………………..When one male gamete and the egg fuse together. The fertilized egg grows into seed from which the new plants can grow.

Select the appropriate options and complete the following paragraph : (heat,energy,decreasing, thermometer , increasing , potential, kinetic, atoms, thermal) Heat is a form of ………. Which flows from object at high temperature to the object at low temperature . Temperature of an object is measure of hotness and coldness of that object . it also is a measure of average .......... energy of atoms in the object . but the temperature cannot be measured accurately by just touching the object . hence , to measure temperature ........... is used . when a hot object is placed in contact with cold object , they exchange ............ . the average kinetic energy of atoms of cold objects goes on ........ . in this way , both the objects attain the same temperature when kept in contact .

Fill in the blanks by selecting the correct word from the bracket and complete the given paragraph . ( semen, external, placenta,urinogenital duct, oviduct, ovum , internal, sperm,zygote, embryo) "_______" is ejaculated in vagina and passes to uterus and then to "___________" . In humans, fertilization is "________________" . In fertilization, "______________" is formed by fusion of "______________" and ovum and then it undergoes repeated mitotic divisions to form "______________" .

What kind of abnormality would be seen in an individual if it was formed by an XX egg and a Y carrying sperm?

CHETANA PUBLICATION-REPRODUCTION IN LOWER AND HIGHER ANIMALS-Exercise
  1. Human placenta is known as ……………… placenta.

    Text Solution

    |

  2. Bartholin glands are homologous to ……..

    Text Solution

    |

  3. When the sperm head touches the……… of the egg, a fertilization membran...

    Text Solution

    |

  4. Approximately,……………… eggs are released by a fertile woman in her life ...

    Text Solution

    |

  5. The main period of organogenesis is trimster during pregnancy. A. in ...

    Text Solution

    |

  6. Endometrium is the …………………

    Text Solution

    |

  7. ……………….. Is a large and single, lobulated gland located underneath the...

    Text Solution

    |

  8. The secondary oocyte is formed………………

    Text Solution

    |

  9. Luteal phase extends from…………. To …………… days of menstrual cycle.

    Text Solution

    |

  10. Name the process in which spermatids become motile.

    Text Solution

    |

  11. Total number of blastomeres formed in Morula stage is ………….

    Text Solution

    |

  12. The intimate connection established between the foetal membrane and th...

    Text Solution

    |

  13. Gonococcal opthalmia is caused in children affected with………..

    Text Solution

    |

  14. The birth control pills inhibits secretion of .................

    Text Solution

    |

  15. Primary lesion (Chencre) are seen as symptoms in STDs like..........

    Text Solution

    |

  16. Milk releasing hormone is ...................

    Text Solution

    |

  17. Milk releasing hormone is ...................

    Text Solution

    |

  18. Implantation is completed within............. days of fertilization.

    Text Solution

    |

  19. Development of placenta is the characteristic feature of.......

    Text Solution

    |

  20. Pregnancy in the second trimester is maintained by ..............

    Text Solution

    |