CBSE-CLASS-XII SERIES Biology
Immunity
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
3
2025 1
2024 Chapter Questions 4 MCQs
01
PYQ 2024
medium
biology ID: cbse-cla
(b) What is a ‘vaccine’? Explain the principle on which it works.
02
PYQ 2025
medium
biology ID: cbse-cla
The foetus receives some antibodies from their mother through the placenta during pregnancy. Choose the correct option that shows the type of immunity developed in the foetus.
1
Naturally acquired active immunity
2
Artificially acquired passive immunity
3
Naturally acquired passive immunity
4
Artificially acquired active immunity
03
PYQ 2025
medium
biology ID: cbse-cla
The symptoms of malaria do not appear immediately after the entry of sporozoites into the human body when bitten by female Anopheles mosquito. Explain why it happens.
04
PYQ 2025
medium
biology ID: cbse-cla
Describe any two situations where a medical doctor would recommend injection of pre-formed antibodies (antitoxins) into the body of a patient.
About Immunity - CBSE-CLASS-XII
Immunity is a vital chapter for CBSE-CLASS-XII aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Immunity PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Immunity carry the most weight. Then, tackle the questions iteratively to solidify your understanding.