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

Give the effect of temperature on plant growth.

  • Ans 1: Normal rate of growth increases with rise of temperature and decrease with decrease in temperature. For maximum growth the optimum temperature is 25 to 30oC and it is least at 5-10oC. But at very high temperature 35 to 40oC the rate of growth stops and plant may dies.
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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

Give the effect of temperature on plant growth.

  • Ans 1: Normal rate of growth increases with rise of temperature and decrease with decrease in temperature. For maximum growth the optimum temperature is 25 to 30oC and it is least at 5-10oC. But at very high temperature 35 to 40oC the rate of growth stops and plant may dies.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 2

Question # 1

Differentiate maturation from differentiation.

  • Ans 1: Maturation:During maturation,the final size of a given type of a cell is attained.The cells which develop into pith,cortex and certain other tissues do not elongate further.
  • Ans 2: Differentiation:When the cell enlargement ceases,the process of differentiation starts.Wall of cells become pitted,thickening appear on the walls of xylem vessels etc.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 3

Question # 1

What are intercalary meristems?Give their role.

  • Ans 1: These are the parts of apical meristem which get separated from apex by permanent issues.They play important role in the production of leaves and flowers.
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12th Class Biology Chapter 19 Short Questions Preparation - Set 4

Question # 1

What are the internal factors which affect the process of growth?

  • Ans 1: internal factors which are involved in plant growth are hormones,water ,nutrition,vitamins.
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12th Class Biology Chapter 19 Short Questions

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