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Ok, I am providing you the sample question paper of Biology of 12th of Rajasthan Board of Secondary Education RBSE RBSE 12th Biology question paper SECTION-A Q.1 What is emasculation ? [1] Sol. Removal of anther (Male sex organ) of bisexual flower is called emasculation. Q.2 Write down the name of hormone secreted by ovary in the later phase of pregnancy. [1] Sol. Hormone progesterone is produced by corpus luteum during later phase of pregnancy. It helps in maintaining pregnancy. Q.3 Mention the application of in vitro fertilization. [1] Sol. In vitro fertilization (IVF) is a method of ART (Assisted Reproductive Technology) to treat infertility. Q.4 Write down the name of any one natural method of contraceptive. [1] Sol. Following are the natural methods of contraception (i) Periodic abstinence (ii) Withdrawl method (iii) Lactational amenorrhea. Q.5 On which continent Homo sapiens arose ? [1] Sol. Homo sapiens arose in African continent. Q.6 Write down the name of typhoid causing pathogen. [1] Sol. Typhoid is a infective disease caused by bacterium Salmonella typhi. Q.7 How does opioids effect the body ? [1] Sol. Opioids are the drugs which binds to specific opioid receptors present in our central nervous system and gastrointestinal tract and causes change in behaviour. RBSE 12th Biology question paper ![]() ![]() ![]() For complete question paper here is the attachment
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