Second Year Biology Chapter 18 Short Questions Online Preparation (Reproduction)

Online Short Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 18 Short Questions Preparation

Question # 1

Name the hormones that stimulate mammary glands for lactation.

  • Ans 1: Leutotropic hormone (LTH) and placental lactogen both stimulate mammary glands to produce milk.
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Prepare Complete Set Wise Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "

12th Class Biology Chapter 18 Short Questions Preparation - Set 1

Question # 1

Name the hormones that stimulate mammary glands for lactation.

  • Ans 1: Leutotropic hormone (LTH) and placental lactogen both stimulate mammary glands to produce milk.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

Write about the disease syphilis? Or Give causes and symptoms of syphilis?

  • Ans 1: It is caused by a spirochete, Treponema pallidum. It damages the reproductive organs,eyes,bones,joints,CNS,heart and skin. Sexual contact is major source of its spread.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Question # 1

How oestrous cycle different from menstrual cycle?

  • Ans 1: oestrous cycle: Oestrous cycle is a reproductive cycle found in all female mammals except human female. In this cycle, the estrogen production prepares the uterus for conception partly and also follicle develops ova. At this stage female needs a physical stimulus of mating for ovulation. She exhibits a desire for mating or is said to be on heat.
  • Ans 2: Menstrual Cycle: Menstrual cycle in human females the periodic reproductive cycle is completed in approximately 28 days and involves changes in the structure and function of the whole reproductive system. It is called menstrual cycle.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 4

Question # 1

What is after birth? Or What is meant by after birth?

  • Ans 1: Within 10 to 45 minutes after birth uterus contracts and separate the placenta from the wall of uterus and placenta than pass out through vagina. This is called after birth.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 5

Question # 1

Distinguish between vernalization and seed dormancy.

  • Ans 1: Vernalization: vernalization is the chilling treatment given to seed before sowing is called vernalization.
  • Ans 2: Dormancy:Dormancy is special condition of rest which enables an embryo to survive the unfavorable environmental conditions.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 6

Question # 1

Write about the Gonorrhoea disease.

  • Ans 1: it is caused by gram positive bacteria Neisseria gonorrhoeae mainly affecting the mucous membrane of urinogenital tract. New borne infants may acquire serious eye infection if they pass through the infected birth canal. It is highly contagious through the sexual contact.
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12th Class Biology Chapter 18 Short Questions

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