Fsc part 2 online preparation for biology chapter 19 (Growth and Development)

Online Short Questions For Chapter 5 "12th Class Biology Chapter 19 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 19 Short Questions Preparation

Question # 1

How neural plate is formed?

  • Ans 1: on the dorasal surface of the gastrula,over the notochord,presumptive neural ectoderm is present in the form of band. As gastrula elongates,the band thickens to from a neural plate.
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Prepare Complete Set Wise Questions For Chapter 5 "12th Class Biology Chapter 19 Short Questions Preparation "

12th Class Biology Chapter 19 Short Questions Preparation - Set 1

Question # 1

How neural plate is formed?

  • Ans 1: on the dorasal surface of the gastrula,over the notochord,presumptive neural ectoderm is present in the form of band. As gastrula elongates,the band thickens to from a neural plate.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 2

Question # 1

What is grey crescent?Give its importance.

  • Ans 1: Grey crescent is the pigment free area that appears at the time of fertilization.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 3

Question # 1

Define Apical Dominance.Give its cause.

  • Ans 1: In many plant species only apical bud grows while growth of lower axillary buds is inhibited this process is called apical dominance.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 4

Question # 1

Define Gerontology.

  • Ans 1: Gerontology is the study of aging. It also deals with the causes of aging and measures by which aging can be slowed.
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19th Chapter

12th Class Biology Chapter 19 Short Questions

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