CBSE Class 12 Biology Health and Diseases. CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.
1.Name the two primary lymphoid organs of human body?
2.Why colostrum is so important to an infant?
3.What role do macrophages play in providing immunity to humans?
4.Name the two types of cells in which the HIV multiplies after gaining entry into the human blood.
5.Given below are some human organs. Identify one primary and one secondary lymphoid organs: Liver,Thymus, Stomach,Thyroid, Tonsils.
6.Differentiate between active and passive immunization.
7.What is basis for vaccination in human beings? Write the full form of DPT vaccine.
8.What is the effect of alcohol on the human liver cells?
9.Why is secondary immune response more intense than the primary immune response in humans ?
10.List the symptoms of Ascariasis. How does a healthy person acquire this infection ?
Please click the link below to download full pdf file for CBSE Class 12 Biology Health and Diseases.
Click for more Biology Study Material ›