Read and download free pdf of CBSE Class 12 Biology Human Reproduction Worksheet Set E. Download printable Biology Class 12 Worksheets in pdf format, CBSE Class 12 Biology Chapter 3 Human Reproduction Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Biology Class 12 Assignments and practice them daily to get better marks in tests and exams for Class 12. Free chapter wise worksheets with answers have been designed by Class 12 teachers as per latest examination pattern
Chapter 3 Human Reproduction Biology Worksheet for Class 12
Class 12 Biology students should refer to the following printable worksheet in Pdf in Class 12. This test paper with questions and solutions for Class 12 Biology will be very useful for tests and exams and help you to score better marks
Class 12 Biology Chapter 3 Human Reproduction Worksheet Pdf
Long Short Answer Questions
Question . STDs are a threat to reproductive health. Describe any two such diseases and suggest preventive measures.
Answer. • Infections or diseases that are transmitted through sexual intercourse are collectively called sexually transmitted diseases (STDs) or venereal diseases (VD) or reproductive tract infections (RTI).
• STDs are caused by bacteria (syphilis, gonorrhoea), virus (AIDS, hepatitis B, genital herpes, genital warts), protozoans, nematodes, ectoparasites (trichomoniasis, chlamydiasis) and fungi.
• Early symptoms: Itching, fluid discharge, slight pain and swellings in the genital region.
• Complications due to chronic STDs: Pelvic inflammatory diseases (PID), abortions, still births, ectopic pregnancies, infertility, or even cancer of the reproductive tract.
• Transmission of hepatitis-B and HIV also occurs by the following ways:
(i) Sharing of injection needles or surgical instruments with infected persons;
(ii) transfusion of infected blood;
(iii) transfer from infected mother to the foetus through placenta.
Question . Name two hormones that are constituents of contraceptive pills. Why do they have high and effective contraceptive value? Name a commonly prescribed non-steroidal oral pill.
Answer. Progestogen-estrogen combination, Progestogen or Progesterone are present in contraceptive pills. They inhibit ovulation, implantation and alter quality of cervical mucus to retard entry of sperm. Saheli is a commonly prescribed oral pill.
Question . (a) Expand IUD.
(b) Why is hormone releasing IUD considered a good contraceptive to space children?
Answer. (a) IUD—Intra uterine devices.
(b) Hormone releasing IUDs are considered a good contraceptives because
(i) they make the uterus unsuitable for implantation.
(ii) they increase the phagocytosis of sperms within uterus and the Cu ions released, suppress sperm motility and the fertilising capacity of sperms.
Question . Name three incurable sexually transmitted diseases and their causative organisms.
Answer. Sexually transmitted disease Causal agent
(i) Hepatitis-B Hepatitis-B virus
(ii) Genital herpes Herpes simplex virus
(iii) AIDS HIV (Human Immunodeficiency Virus)
Please click on below link to download CBSE Class 12 Biology Human Reproduction Worksheet Set E
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CBSE Class 12 Biology Chapter 3 Human Reproduction Worksheet
The above practice worksheet for Chapter 3 Human Reproduction has been designed as per the current syllabus for Class 12 Biology released by CBSE. Students studying in Class 12 can easily download in Pdf format and practice the questions and answers given in the above practice worksheet for Class 12 Biology on a daily basis. All the latest practice worksheets with solutions have been developed for Biology by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their examinations. Studiestoday is the best portal for Printable Worksheets for Class 12 Biology students to get all the latest study material free of cost.
Worksheet for Biology CBSE Class 12 Chapter 3 Human Reproduction
Teachers of studiestoday have referred to the NCERT book for Class 12 Biology to develop the Biology Class 12 worksheet. If you download the practice worksheet for the above chapter daily, you will get better scores in Class 12 exams this year as you will have stronger concepts. Daily questions practice of Biology printable worksheet and its study material will help students to have a stronger understanding of all concepts and also make them experts on all scoring topics. You can easily download and save all revision Worksheets for Class 12 Biology also from www.studiestoday.com without paying anything in Pdf format. After solving the questions given in the practice sheet which have been developed as per the latest course books also refer to the NCERT solutions for Class 12 Biology designed by our teachers
Chapter 3 Human Reproduction worksheet Biology CBSE Class 12
All practice paper sheet given above for Class 12 Biology have been made as per the latest syllabus and books issued for the current academic year. The students of Class 12 can be assured that the answers have been also provided by our teachers for all test paper of Biology so that you are able to solve the problems and then compare your answers with the solutions provided by us. We have also provided a lot of MCQ questions for Class 12 Biology in the worksheet so that you can solve questions relating to all topics given in each chapter. All study material for Class 12 Biology students have been given on studiestoday.
Chapter 3 Human Reproduction CBSE Class 12 Biology Worksheet
Regular printable worksheet practice helps to gain more practice in solving questions to obtain a more comprehensive understanding of Chapter 3 Human Reproduction concepts. Practice worksheets play an important role in developing an understanding of Chapter 3 Human Reproduction in CBSE Class 12. Students can download and save or print all the printable worksheets, assignments, and practice sheets of the above chapter in Class 12 Biology in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 12 Biology MCQ Test for the same chapter.
Worksheet for CBSE Biology Class 12 Chapter 3 Human Reproduction
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