12th Class Biology Sample Paper Biology - Sample Paper-2

  • question_answer
    (i) What are the symptoms of malaria?
    (ii) Name the commonly used hormones present in contraceptive pills.
    State any two differences between spermatogenesis and oogenesis.


    (i)  Malaria is protozoan disease caused by Plasmodium. Symptoms of malaria are chill, shivering, recurring fever every 3rd or 4th day, increase in pulse and respiration rate, sweating and anaemia.
    (ii) Progesterone and estrogen.
    Differences between spermatogenesis and oogenesis:
    Spermatogenesis Oogenesis
    (i) It is the process of formation of sperms in testis. (i) It is the process of formation of ova in ovary.
    (ii) One primary spermatocyte produces four sperms. (ii) One primary oocyte produces one ovum.


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