Home
Class 12
BIOLOGY
The fall in the number of sperms per mil...

The fall in the number of sperms per millimeter of semen causes sterility. This is due to insufficient amount of

A

Acid phosphates

B

Alkaline phosphates

C

Testosterone

D

Hyaluronidase

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • HUMAN REPRODUCTION

    CENGAGE BIOLOGY ENGLISH|Exercise Assertion -Reasoning Question|16 Videos
  • HUMAN HEALTH AND DISEASE

    CENGAGE BIOLOGY ENGLISH|Exercise ARCHIVES|46 Videos
  • MICROBES IN HUMAN WELFARE

    CENGAGE BIOLOGY ENGLISH|Exercise ARCHIVES|26 Videos

Similar Questions

Explore conceptually related problems

The decrease in the number of sperms in semen is called .....x….... and is due to the insufficient amount of …....y…... Select the correct option for X and Y .

Number of sperms present in a single ejaculation of semen contains

Number of 'falling stars' per day is

A disc is made to rotate about a vertical axis at the rate of 300 rpm. A small piece of putty of mass 5 g falls vertically on the disc at a distance of 4 cm from the axis. Now the number of revolutions per minute is reduced to 240 rpm. What is the moment of inertia of the disc?

In polycythemia the number of red cells increases greatly.This causes adverse effects due to

A horizontal disc rotating freely about a vertical axis makes 100 rpm. A small piece of wax of mass 10 g falls vertically on the disc and adheres to it at a distance of 9 cm from the axis if the number of revolution per minute is thereby reduced to 90. Calculate the moment of inertia of disc.

Define mutual inductance between two long coaxial solenoids. Find out the expression for the mutual of inner solenoid of length 1 having the radius r_(1) and the number of turns n_(1) per unit length due to the second other solenoid of same length and n_(2) number of turns per unit length.

A gear ratio r:s is the ratio of the number of teeth of two connected gears. The ratio of the number of revolutions per minute (rpm) of two gear wheels is s:r. In the diagram below, Gear A is turned by a motor. The turning of Gear A causes Gears B and C to turn as well. If Gear A is rotated by the motor at a rate of 100 rpm, what is the number of revolutions per minute for Gear C?

A uniform disc rotating freely about a vertical axis makes 90 rpm. A small piece of wax of mass m gram falls vertically on the disc and sticks to it at a distance r cm from the axis. If number of rotations per minute reduces to 60 , find the moment of inertia of the disc.

CENGAGE BIOLOGY ENGLISH-HUMAN REPRODUCTION -Assertion -Reasoning Question
  1. The fall in the number of sperms per millimeter of semen causes steril...

    Text Solution

    |

  2. Assertion: Scrotum provides optimum temperature conditions for spermat...

    Text Solution

    |

  3. Assertion: The process of reproduction does not suffer if one ovary is...

    Text Solution

    |

  4. Nothing lives for ever, yet life continues. What does it mean?

    Text Solution

    |

  5. Assertion: Placenta is connected to the fetus by an umbilical cord. ...

    Text Solution

    |

  6. Assertion: Placenta is contra-deciduate and even the fetal placenta is...

    Text Solution

    |

  7. Assertion: Polar bodies have small amount of cytoplasm. Reason: It i...

    Text Solution

    |

  8. Assertion: Ovulation takes place when the blood level of luteinizing h...

    Text Solution

    |

  9. Assertion: Umbilical cord contain 100% fetal blood. Reason: It has s...

    Text Solution

    |

  10. Assertion: The activation of sperm is called capacitation Reason: C...

    Text Solution

    |

  11. Assertion: Before fusion, spermatozoa have to penetrate egg membrane....

    Text Solution

    |

  12. Assertion : In post natal life , oocyte development occurs in mature f...

    Text Solution

    |

  13. Assertion : Placenta is combined structure of foetal tissue & maternal...

    Text Solution

    |

  14. Assertion: Seminal vesicle is known as the accessory sex organ of male...

    Text Solution

    |

  15. Assertion: Testes are retroperitoneal organ in man. Reason: Peritone...

    Text Solution

    |

  16. Assertion: Cervix contains the largest and the most powerful sphincter...

    Text Solution

    |

  17. Assertion: In ovarian cycle, corpus luteum is exocrine gland. Reason...

    Text Solution

    |