Consider the following statements about immunity: 1. Innate immunity is non-specific. 2. Antibodies are produced by T-cells. 3. Vaccination provides active immunity. Which of the above is/are correct? MCQ with Answer and Explanation
Consider the following statements about immunity:
1. Innate immunity is non-specific.
2. Antibodies are produced by T-cells.
3. Vaccination provides active immunity.
Which of the above is/are correct?
A. 1 and 3 only
B. 1 and 2 only
C. 1, 2, and 3
D. 2 and 3 only
Answer: Option A
Solution (By JKExamLibrary)
Innate immunity is non-specific; vaccination induces active immunity. Antibodies are made by B-cells, not T-cells. So 2 is incorrect.
Explanation:
Meiosis involves two divisions reducing the chromosome number from diploid (2n) to haploid (n), producing gametes (sperm and egg). Mitosis maintains the chromosome number and produces identical somatic cells. Amitosis is direct nuclear division, budding is asexual reproduction. Meiosis ensures genetic diversity.
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