Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2019ZoologyHuman Health and DiseasesActual

Assertion : The principle of vaccination is based on the property of memory cells of the immune system. Reason: Vaccines generate memory B cells and T cells that recognise the pathogen quickly.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion.

Step-by-step solution

No Solution Available

Practice Human Health and Diseases on Quantrex Academy →

More from Human Health and Diseases

Which of the following is used as an effective sedative and painkiller for treating post-surgery patients ? 2026Colostrum, secreted by mother during initial days of lactation, is abundant in __________. 2026Which of the following are secondary lymphoid organs ? (a) Bone marrow (b) Tonsils (c) Spleen (d) Thymus Choose the correct answer from the options given below : 2026The following are the stages of life cycle of Plasmodium . Arrange the stages in the proper order. A. The parasites reproduce asexually in RBCs, bursting the cells. B. The parasite 2026Match List I with List II : List I (Drug) List II (Effect) A. Nicotine I. Causes sense of euphoria and increased energy B. Morphine II. Stimulates adrenal gland to release catechol 2026Which of the following statements is correct about Plasmodium ? 2026Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body? 2025Neoplastic characteristics of cells refer to : A. A mass of proliferating cell B. Rapid growth of cells C. Invasion and damage to the surrounding tissue D. Those confined to origin 2025 Full Human Health and Diseases list All NEET PYQs