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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  • Total Questions10

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Biology - 12th Class Biology Chapter 18 Short Questions Preparation

Question # 1

Define photoperiodism.

  • Ans 1: Photo mean light; periodism for duration. Response of plants to the duration of light is called 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

Define photoperiodism.

  • Ans 1: Photo mean light; periodism for duration. Response of plants to the duration of light is called photoperiodism.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Question # 1

Define labour pain.

  • Ans 1: At the time of birth, the reduction of progesterone level stimulates pituitary gland to produce oxytocin. This induces labour pain or contraction of the uterus wall.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Question # 1

Differentiate between parthenocarpy and apomixes.

  • Ans 1: Apomixes: 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 ovary into fruit.
  • Ans 2: Parthenocarpy: Formation of fruit without fertilization is called parthenocarpy. For example seedless grapes and banana.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 4

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 5

Question # 1

What is Apomixes? Or What is meant by Apomixes?

  • 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 ovary into fruit.
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12th Class Biology Chapter 18 Short Questions Preparation - Set 6

Question # 1

Give two disadvantages of cloning.

  • Ans 1: The entire organism produced by cloning are identical to each other and no genetic variability is produced.
  • Ans 2: All the organism will not show any resistant to disease if it outbreaks and all the generation will be died.
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18th Chapter

12th Class Biology Chapter 18 Short Questions

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