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

What are phytochromes?

  • Ans 1: Phytochromes are blue light sensitive proteins found in plants. They exist in two form i.e,P660 andP730. They play an important role in photoperiodism.
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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

What are phytochromes?

  • Ans 1: Phytochromes are blue light sensitive proteins found in plants. They exist in two form i.e,P660 andP730. They play an important role in photoperiodism.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

How Implantation differes from gestation?

  • Ans 1: Implantation: Implantation is when the new human created at fertilization implants in the uterus. The newly created offspring,technically referred to as a blastocyst,travels to the uterus through the fallopian tube and implants in the wall of the uterus.
  • Ans 2: Gestation: Gestation means carrying the embryo inside the females uterus.
    It is the time period from conception to birth of the child.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Question # 1

Define reproduction.What is its significance?

  • Ans 1: Process in which living organism produced their new generation like to themselves is called reproduction.
  • Ans 2: It ensures the survival of species.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 4

Question # 1

What is Gonorrhoa and who caused it?

  • Ans 1: It is caused by a gram positive bacterium Neisseria gonorrhoeae,mainly affecting the mucous membrane of urinogenital tract. New born infants may acquire serious eye infections if they pass through the infected birth canal.It is highly contagious through sexual contacts.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 5

Question # 1

What is diplohaplontic life cycle? Give its types.

  • Ans 1: In sexual reproduction,plants have diplohaplontic life cycle with alternating diploid sporophyte and haploid gametophyte generations. its type are isomorphic generations and heteromorphic generations.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 6

Question # 1

What is Follicle atresia?

  • Ans 1: FSH stimulates the formation of several follicels. Only one of these follicles continues to grow with its primary oocytes while rest breakdown by a degenerative process called follicle atresia.
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18th Chapter

12th Class Biology Chapter 18 Short Questions

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