All Chapter 7 Marks

10th Standard

    Reg.No. :


Time : 00:30:00 Hrs
Total Marks : 42
    1 x 1 = 1
  1. 1. CPU -
    2. DOC -
    3. JPG -
    4. PPTs -
    5. MIT -
    6. CSS -
    7. MP3 -
    8. PDF -
    9. DLL -
    10.PNG -
    11. XLS -
    12. PSD -

  2. 6 x 7 = 42
  3. What are the phases of menstrual cycle? Indicate the changes in the ovary and uterus.

  4. The sex of the new born child is a matter of chance and neither of the parents may be considered responsible for it. What would be the possible fusion of gametes to determine the sex of the child?

  5. Arun was playing in the garden. Suddenly he saw a dragon fly sitting on a plant. He observed the wings of it. He thought it looked similar to a wing of a crow. Is he correct? Give reason for your answer.

  6. A breeder wishes to incorporate desirable characters into the crop plants. Prepare a list of characters he will incorporate

  7. A leading weekly magazine has recently published a survey analysis which says that number of AIDS patient in the country is increasing day by day. The report says that the awareness among the people about AIDS is still very poor. You are discussing the magazine report in your class and a team of your class decides to help people to fight against the dreadful disease
    a) What problem you face when trying to educate the people in your village near by your school?
    b) How do you overcome the problem ?

  8. Why is the Government imposing ban on the use of polythene bags and plastics? Suggest alternatives. How is this ban likely to improve the environment?


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