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Old January 19th, 2018, 11:53 AM
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Join Date: Dec 2011
Default Re: 12Th RBSE Guess Paper

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
Attached Files Available for Download
File Type: pdf RBSE 12th Biology question paper.pdf (480.1 KB, 3 views)
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