✓ Board-verified
Biology · 2023 · 1 mark
CBSE 2023 · Region 3 · Set 1 · Q15
Assertion (A): More and more children in metro cities of India suffer from allergies and asthma due to sensitivity to the environment. Reason (R):…
Assertion (A) : More and more children in metro cities of India suffer from allergies and asthma due to sensitivity to the environment. Reason $\displaystyle (R)$ : Modern day lifestyle and a protected environment in early life has resulted in lowering the immunity.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
All Human Health and Disease questions2023 question paperNCERT solutions: Human Health and DiseasePractice Human Health and Disease →
More from Human Health and Disease
- Interferons are proteins secreted by2024
- The type of antibodies produced during an immune response to allergens as dust and pollen grains in a person is:2025
- Which of the following is a carrier for the disease Amoebiasis?2026
- Name the category of drugs represented by the chemical structure given above. If the methyl group is substituted by acetyl group we get a bitter…2023
- Read the following passage and answer the questions that follow. Deaths related to the use of drugs were estimated at about 5,00,000 in 2019, 17 · 5…2025
- "Plasmodium protozoan needs both a mosquito and a human host for its continuity." Explain. OR We all must work towards maintaining good health…2023
- Name the diseases and their mode of transmission in human by (i) common round worm and (ii) filarial worm.2022
- What is the role of histamine released by mast cells?2026
CBSE Class 12 Biology past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.