22. Draw a checker board show the law of independent assortment with a flow chart and explain the ratio.

23. Explain the process to understand monohybrid cross of Mendel experiment with a checker board.

24. Prepare a flow chart showing evolution of man through ages.

25. Nature selects only desirable characters. Prepare a cartoon.

26. What is your understanding about survival of the fittest. Give some situations or examples that you observe in your surroundings?

27. Write a monologue on evolution of a man to perform a stage show on the theatre day in your school.

1. The process of acquiring character or traits is called ____________.

2. Mendel's experiment explains about ______________.

3. The four characters observed in the experiments on law of independent assossment are ____________

4. If we cross pollinate red flower plant with white flower we will get _______ percent of recessive trait plants.

5. TT or YY, Tt or Yy are responsible for a _________________ character.

6. Humans have ______________ pairs of autosomes and _____________ pair of sex chromosomes.

7. The population grows in_________________ progression where as food sources grow in ________________ progression.

8. A goat which can’t walk properly can't live for a long time. According to Darwin this represents ___________.

9. Forelimb of whale is for swimming where as in horse it is used for ______________________.

10. The study of fossils is called __________________.

11. Which of the following is not a variation in rose plant.( )
A) Coloured petals B) Spines C) Tendrils D) Leaf margin

12. According to Mendel alleles have the following character. ( )
A) Pair of genes B) Responsible for character
C) production of Gametes D) Recessive factors

13. Natural selection means ( )
A) Nature selects desirable characters B) Nature rejects undesirable characters
C) Nature reacts with an organism D) A, B

14. Palaeontologists deal with ( )
A) Embryological evidences B) Fossil evidences
C) Vestigial organ evidences D) al