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Online Short Questions For Chapter 7 "12th Class Biology Chapter 21 Short Questions Preparation "
Try The Short Questions For 12th Class Biology Chapter 21 Short Questions Preparation
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Total Questions10
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Available Sets4
Biology - 12th Class Biology Chapter 21 Short Questions Preparation
Question # 1
Give only cause of Down's syndrome and Klinefelter syndrome.
- Ans 1: These are meiotic errors due to non disjunction and due to unequal distribution of chromosomes.
12th Class Biology Chapter 21 Short Questions Preparation - Set 1
Question # 1
Give only cause of Down's syndrome and Klinefelter syndrome.
- Ans 1: These are meiotic errors due to non disjunction and due to unequal distribution of chromosomes.
12th Class Biology Chapter 21 Short Questions Preparation - Set 2
Question # 1
What is importance of bivalent formation?
- Ans 1: Due to bivalent formation of homologous chromosomes,the non sister chromatids exchange their segment during the crossing over resulting in new recombination.
12th Class Biology Chapter 21 Short Questions Preparation - Set 3
Question # 1
Give four importance of mitosis.
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Ans 1: i) It transfers unchanged genetic information to the daughter cells
ii) It helps in all types of asexual reproduction like cloning,tissue culture etc
iii) It helps in healing of wounds
iv) It maintains the chromosomes number constant.
12th Class Biology Chapter 21 Short Questions Preparation - Set 4
Question # 1
Cancer is uncontrolled cell division. Explain.
- Ans 1: It is called so because genes controlling the cell division lose their control over cell division and cell divides without any control,so it is called uncontrolled cell division.
12th Class Biology Chapter 21 Short Questions
Here you can prepare 12th Class Biology Chapter 21 (Cell Cycle). Click the button for 100% free full practice.
