Home
Class 12
BIOLOGY
Which layer vanishes on 28^(th) day if a...

Which layer vanishes on `28^(th)` day if a female does not become pregnant?

A

Endometrium

B

Myometrium

C

Epimetrium

D

B and C both

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • HUMAN REPRODUCTION

    KUMAR PRAKASHAN|Exercise SECTION-E SOLUTION OF NCERT EXEMPLAR (LONG ANSWER TYPE QUESTIONS)|1 Videos

  • HUMAN HEALTH AND DISEASE

    KUMAR PRAKASHAN|Exercise Section - F (Multiple Choice Question) (MCQs Asked In Competitive Exam))|33 Videos

  • MICROBES IN HUMAN WELFARE

    KUMAR PRAKASHAN|Exercise SECTION - F MULTIPLE CHOICE QUESTIONS(MCQS ASKED IN COMPETITIVE EXAM)|56 Videos

Similar Questions

Explore conceptually related problems

To observe the different parts of seed. Materials : Seeds of Bengal gram (chana), water, wet cloth. Procedure : rarr Soak a few seeds of Bengal gram (chana) and keep them overnight. rarr Drain the excess water and cover the seeds with a wet cloth and leave them for a day. rarr Make sure that the seeds do not become dry. rarr Cut open the seeds carefully and observe the different parts. Which are the structures seen in an embryo?

To observe the different parts of seed. Materials : Seeds of Bengal gram (chana), water, wet cloth. Procedure : rarr Soak a few seeds of Bengal gram (chana) and keep them overnight. rarr Drain the excess water and cover the seeds with a wet cloth and leave them for a day. rarr Make sure that the seeds do not become dry. rarr Cut open the seeds carefully and observe the different parts. Which parts in seed are known as future root and as future shoot ?

(i) A poor emitter has a large reflectivity . Explain why. (ii) A copper tumbler feels much colder than a wooden block on a cold day. Explain why. (iii) The earth would become so cold that life is not possible on it in the absence of the atmosphere. Explain why? (iv) Why clear nights are cooler than cloudy nights? Why does a piece of red glass when heated and taken out glow with green light? (vi) Why does the earth not become as hot as the sun although it has been receiving heat from the sun for ages? (vii) Animals curl into a ball when they are very cool. Why? (viii) Heat is generated continuously in an electric heater but its temperature becomes constant after some time. Explain why? (ix) A piece of paper wrapped tightly on a wooden rod is observed to get charred quickly when held over a flame as compared to a similar piece of paper when wrapped on a brass rod. Explain why? (x) Liquid in a metallic pot boils quickly whose base is made black and rough than in a pot whose base is highly polished . Why?

Ranjeet has 3 daughters. His wife is pregnant again and is told by Ranjeet that if she does not give birth to son, she will be thrown out of the house. She is also asked to go for sonography and remove foetus if it is found to be female. Answer the questions based on this information. Is removing female foetus correct measure ?

Your subject teacher arranged a potted plant as shown in figure (a). Next day turn its position horizontally as shown in figure (b). After few days, you observed the plant as shown in figure (c). Which type of movement does this experiment explain ?

When an object moves through a fluid, as when a ball falls through air or a glass sphere falls through water te fluid exerts a viscous foce F on the object this force tends to slow the object for a small sphere of radius r moving is given by stoke's law, F_(w)=6pietarv . in this formula eta in the coefficient of viscosity of the fluid which is the proportionality constant that determines how much tangential force is required to move a fluid layer at a constant speed v, when the layer has an area A and is located a perpendicular distance z from and immobile surface. the magnitude of the force is given by F=etaAv//z . For a viscous fluid to move from location 2 to location 1 along 2 must exceed that at location 1, poiseuilles's law given the volumes flow rate Q that results from such a pressure difference P_(2)-P_(1) . The flow rate of expressed by the formula Q=(piR^(4)(P_(2)-P_(1)))/(8etaL) poiseuille's law remains valid as long as the fluid flow is laminar. For a sfficiently high speed however the flow becomes turbulent flow is laminar as long as the reynolds number is less than approximately 2000. This number is given by the formula R_(e)=(2overline(v)rhoR)/(eta) In which overline(v) is the average speed rho is the density eta is the coefficient of viscosity of the fluid and R is the radius of the pipe. Take the density of water to be rho=1000kg//m^(3) Q. Which of the following may be concluded from the information in the passage?

When an object moves through a fluid, as when a ball falls through air or a glass sphere falls through water te fluid exerts a viscous foce F on the object this force tends to slow the object for a small sphere of radius r moving is given by stoke's law, F_(w)=6pietarv . in this formula eta in the coefficient of viscosity of the fluid which is the proportionality constant that determines how much tangential force is required to move a fluid layer at a constant speed v, when the layer has an area A and is located a perpendicular distance z from and immobile surface. the magnitude of the force is given by F=etaAv//z . For a viscous fluid to move from location 2 to location 1 along 2 must exceed that at location 1, poiseuilles's law given the volumes flow rate Q that results from such a pressure difference P_(2)-P_(1) . The flow rate of expressed by the formula Q=(piR^(4)(P_(2)-P_(1)))/(8etaL) poiseuille's law remains valid as long as the fluid flow is laminar. For a sfficiently high speed however the flow becomes turbulent flow is laminar as long as the reynolds number is less than approximately 2000. This number is given by the formula R_(e)=(2overline(v)rhoR)/(eta) In which overline(v) is the average speed rho is the density eta is the coefficient of viscosity of the fluid and R is the radius of the pipe. Take the density of water to be rho=1000kg//m^(3) Q. Calculate the highest average speed that blood (rho~~1000kg//m^(3) ) could have and still remain in laminar flow when it flows through the arorta (R=8xx10^(-3)m ) Take the coeffiicient of viscosity of blood to be 4xx10^(-3)Pa-s

KUMAR PRAKASHAN-HUMAN REPRODUCTION-SECTION-F MULTIPLE CHOICE QUESTIONS
  1. By what name the tissue surrounded by mature ovum is known as ?

    Text Solution

    |

  2. By what name the large middle layer of uterus is known as?

    Text Solution

    |

  3. Which layer vanishes on 28^(th) day if a female does not become pregna...

    Text Solution

    |

  4. By what name are sperms known before passing from spermiogenesis?

    Text Solution

    |

  5. Which of the following is seen in acrosome?

    Text Solution

    |

  6. From what axial fibre of sperm cell is formed?

    Text Solution

    |

  7. By what of the following acrosome is formed?

    Text Solution

    |

  8. On development of endometrium the effect of increased amount of which ...

    Text Solution

    |

  9. What changes is induced by entry of sperm into ovum?

    Text Solution

    |

  10. Which of the following functions is performed by placenta?

    Text Solution

    |

  11. From where prostaglandin hormone is produced?

    Text Solution

    |

  12. In human beings, the gestation period after ovulation is of how many d...

    Text Solution

    |

  13. The synthesis of milk in mammary gland is done by…………of anterior pitui...

    Text Solution

    |

  14. By what name the milk secreted during the initial days of lactation is...

    Text Solution

    |

  15. In which of the following phase is first polar body divided?

    Text Solution

    |

  16. It is known as male gamete cell

    Text Solution

    |

  17. Which cells provides nutrition to sperm cells?

    Text Solution

    |

  18. Its secretion acts as lubrication during coitus?

    Text Solution

    |

  19. The fusion of male pro nucleus and female pro nucleus, produces diploi...

    Text Solution

    |

  20. Morula continually divides and forms………….

    Text Solution

    |