08-11-2023, 12:47 PM
CBSE +2 Annual Exam 2022 Biology question paper sets are attached below for additional references, that can be downloaded easily.
Some sample questions from the question papers are:
(a) What does ‘RT-PCR’ stand for ?
(b) Explain the various steps of PCR technique.
Check the following question papers for more details.
Some sample questions from the question papers are:
- Explain the two physiological attributes which enable a kangaroo rat to survive in desert conditions.
- When Plasmodium sp. (malarial parasite) enters the human body, it reproduces asexually and increases its number. During this course, the affected person suffers from malaria. After a number of asexual cycles, the parasite, in order to complete its life cycle, enters the sexual phase of its life. Trace the sexual stages in the life cycle of Plasmodium in a female Anopheles mosquito, when it bites an infected person, up to the formation of mature infective stages of the parasite.
- Some of the microbes used as bio fertilizers are prokaryotes. Name the taxonomic group they come under. With the help of an example, mention how they act as biofertilizers.
- Bacillus thuringiensis plays an important role in Integrated Pest Management strategy. Explain how. Name any two crops that are protected efficiently from pests.
- Causative agents of HIV-AIDS and COVID-19 belong to the same group of viruses. To diagnose and amplify the genetic material for further study
(a) What does ‘RT-PCR’ stand for ?
(b) Explain the various steps of PCR technique.
Check the following question papers for more details.