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Published on: 25/05/2021
QB365 Provides the updated NCERT Examplar Questions for Class 12 Biology, and also provide the detail solution for each and every ncert examplar questions , QB365 will give all kind of study materials will help to get more marks
Download CBSE Class 12th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Biology
Questions + Answers key
Take MCQ Biology Test1.
During a visit to Vaishno Devi, Rahul came across a young couple staying in the adjacent room in the hotel.
He learned that the couple had been visiting different temples and performing rituals to get a child. Rahul was astonished and explained to them about ART which he had recently studied in biology. The couple were happy and understood their wrong approach and thanked Rahul.
(i) What is ART? What is the various method included in ART?
(ii) What are the limitations for which ART is not commonly accepted?
(iii) Identify the values which Rahul showed.
2.
Some parents wrote a complaint letter to the local municipality to remove all the hoardings in the city, advertising the use of condoms and matters relating to AIDS prevention. The children of these parents came to know about the matter and raised their voice against the removal of the hoardings. The parents were convinced by the awareness level of their children and withdrew the complaint.
(i) Parents considered the hoarding as inappropriate. Do you agree/disagree with their view?
(ii) What are the methods by which AIDS spreads?
(iii) What is AIDS?
(iv) What values are promoted by the children protesting against their parents?
3.
On world population day, Rohit and his friends arranged an awareness campaign on population explosion programme in their locality. Some elderly people tried to stop the children and asked them not to talk about such things in public.
The children convinced the elders about the need for the programme and on understanding their point of view, the elders also joined the campaign.
(i) Why is such awareness programme necessary?
(ii) What role has the government played in controlling population explosion?
(iii) When were reproductive health programmes initiated in India?
(iv) What values did Rohit and his friends show on the occasion?
4.
Your school has been selected by the Department of Education to organize and host an interschool seminar on 'Reproductive Health problems and Practices', However, many parents are reluctant to permit their wards to attend it. Their argument is that the topic is 'too embar raddling'. Put forth four arguments with appropriate reasons and explanations to justify the topic to be very essential and timely.
5.
Enumerate and describe any five reasons for sex education to school-going children.
1.
(i) Assisted reproductive technology. Various methods included in ART are:
(a) Test-tube baby programme which includes IVF and zygote or embryo transfer.
(b) Gamete Intra Fallopian Transfer
(c) Intra Cytoplasmic Sperm Injection
(d) Artificial Insemination Methods
(ii) Limitations of ARTs are as follows:
(a) these techniques require extremely high precision handling by specialized professionals and expensive instrumentation.
Therefore, these facilities are presently available only in a very few center in the country.
(b) Emotional, religious and social factors are also barriers in the adoptions of these methods.
(iii) Sympathetic attitude with alertness and practical approach.
2.
(i) We disagree. Since the awareness among people has not reached to the extent where everyone knows how and what causes AIDS, therefore forceful and constant reminding is always required. Also, the number of AIDS cases are increasing too fast. So, awareness is necessary.
(ii) Some methods by which AIDS spreads are:
(a) Unprotected sexual contact.
(b) Use of contaminated needles and syringes.
(c) Use of contaminated razors or other instruments used for piercing body parts, e.g. Pinna.
(d) Transfusion of infected blood or blood products.
(e) Organ transplant.
(f) Parturition.
(iii) AIDS is Acquired Immuno Deficiency Syndrome. It is a type of STD caused by HIV
(iv) Sense of understanding towards AIDS application of knowledge in life, national responsibility, and commitment towards society.
3.
(i) To understand the problem faced by the family and the nation due to increasing population and the benefits of having a small family.
(ii) Role of Government in controlling population explosion are:
(a) Creating public awareness through mass media.
(b) Education at all Levels.
(c) Family planning.
(d) Increasing marriageable age (18 for girls and 21 for boys)
(iii) In India, these programmes called 'family planning' were initiated in 1951.
(iv) Rohit and his friends showed understanding about the problem of population explosion, teamwork, and motivational capacity.
4.
The arguments that can be put forward to justify the topic are:
(i) Reduce misconceptions and increase accurate knowledge Students have various wrong and inaccurate information about sex-related and pubertal issues. Accurate knowledge will help them cope up with their bodily changes and hormonal effects easily.
(ii) Clarify and strengthen positive values and attitude It is only through healthy discussions that students can realize that women are not the weaker sex because of their body structure. Such discussions will inculcate a feeling of equality amongst both sexes.
(iii) Increase communication with parents or other trusted elders These seminars open up students to consult their elders in case of confusion and doubt. It will make them understand that reproduction is a normal phenomenon and there is nothing inappropriate in discussing it with elders.
(iv) Increase the skills and thinking needed to make informed decisions and act upon them Out of curiosity, students are often seen getting involved in drug use, unhygienic and unsafe sexual activities, etc. increasing the risk of STDs and other diseases. making them well informed through such seminars well help them to take correct decisions.
5.
Sex education in the school must be encouraged as it provides right information to the students about following aspects of reproductive health:
(i) Paris and functioning of various parts of reproductive system.
(ii) Removes certain myths and misconceptions about sex-related aspects.
(iii) Informs about safe and hygienic sexual practices.
(iv) Informs about adolescence and related problems.
(v) Informs about causes, mode of occurrence and preventive measures of STDs, AIDS,etc.
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