Fsc part 2 online preparation for biology chapter 21 (Cell Cycle)

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

  • Total Questions10

  • Available Sets4

Start Test Download PDF

Biology - 12th Class Biology Chapter 21 Short Questions Preparation

Question # 1

Define non-disjunction of chromosomes. Or Define chromosomal non-disjunction.

  • Ans 1: It is chromosomal non disjunction,during which spindle fibers fail to attach with chromosomes and resulting unequal distribution of chromosomes occur.
Submit

Prepare Complete Set Wise Questions For Chapter 7 "12th Class Biology Chapter 21 Short Questions Preparation "

12th Class Biology Chapter 21 Short Questions Preparation - Set 1

Question # 1

Define non-disjunction of chromosomes. Or Define chromosomal non-disjunction.

  • Ans 1: It is chromosomal non disjunction,during which spindle fibers fail to attach with chromosomes and resulting unequal distribution of chromosomes occur.
Submit

12th Class Biology Chapter 21 Short Questions Preparation - Set 2

Question # 1

Differentiate between cancer cell and normal cell or Write a least three characters of cancer cells.

  • Ans 1: Cancer cell can be distinguished from normal cells because they are less differentiated than normal cells,exhibit the characteristics of rapidly growing cell,i.e,is high nucleus to cytoplasmic ratio,prominent nucleoli and many mitosis.
Submit

12th Class Biology Chapter 21 Short Questions Preparation - Set 3

Question # 1

Describe changes occur in during G1phase.

  • Ans 1: It is period of extensive metabolic activities,in which cell normal grows in size,specific enzymes are synthesized and DNA base units are accumulated for the DNA synthesis
Submit

12th Class Biology Chapter 21 Short Questions Preparation - Set 4

Question # 1

Give causes and symptoms of Down's syndrome. Or Write symptoms of Down's syndrome.

  • Ans 1: The cause of Down's syndrome is the missing of 21stchromosomes due to non disjunction. The affected individuals have a flat,broad face,squint eyes with folds in the inner corner and protruding tongue,mental retardation and defective development of central nervous system.
Submit

ic-science-white
Biology
21th Chapter

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.

Start Chapter 21 Preparation