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

Define parthenocarpy. How it is artificially induced?

  • Ans 1: Formation of fruit without fertilization is called parthenocarpy. It is artificially can be induced by applying synthetic auxin(NAA).
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12th Class Biology Chapter 18 Short Questions Preparation - Set 1

Question # 1

Define parthenocarpy. How it is artificially induced?

  • Ans 1: Formation of fruit without fertilization is called parthenocarpy. It is artificially can be induced by applying synthetic auxin(NAA).
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

What are Ovoviviparous?

  • Ans 1: In some animals like duck bill platypus internal fertilization leads to internal development of the young ones in a shelled egg and when development is completed shelled egg is laid which hatches the offspring, such animals are called ovaviviparous.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Question # 1

Define fruit.

  • Ans 1: Ripened ovary is called fruit. After the fertilization the cells of ovary wall starts to divide and it develops into complete fruit.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 4

Question # 1

Differentiate the internal and external fertilization.

  • Ans 1: External Fertilization:Fertilization which occurs outside the body is know as external fertilization.
    It occurs aquatic environment where male gametes can swin towards females gametes in water medium.
  • Ans 2: Internal Fertilization: Fertilization which occurs inside the body of organisms is known as internal fertilization.
    Sperms are lodged in the female body where fertilization occurs.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 5

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 6

Question # 1

Apomixes is a form of parthenogenesis.Discuss

  • Ans 1: In apomixes a diploid cell either from the nucellus or megaspore develops into a functional embryo in the absence of a male gamete. The rest of the ovule develops into seed and and ovary into fruit.
  • Ans 2: Parthenogenesis: Development of an egg without fertilization
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12th Class Biology Chapter 18 Short Questions

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