Select the incorrect statement with respect to acquired immunity:
- Primary response is produced when our body encounters a pathogen for the first time.
- Anamnestic response is elicited on subsequent encounters with the same pathogen
- Anamnestic response is due to memory of first encounter
- Acquired immunity is non-specific type of defense present at the time of birth
The Correct Option is D
Solution and Explanation
Top Questions on Immune System
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Statement I : In the nephron, the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.
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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
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(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
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The output (Y) of the given logic gate is similar to the output of an/a :
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Concepts Used:
Immune System
It consists of tissues, cells, soluble molecules like antibodies and lymphoid organs. The WBC cells called the leucocytes have a significant role as they seek out to destroy the disease-causing organisms. These leucocytes are stored in different locations in the body including the spleen, bone marrow, and thymus. These organs are called as the lymphoid organs. The leucocytes are also present in the lymph nodes of the body.It is considered as the main lymphoid orga and. It produces all the blood cells including the lymphocytes. The thymus is an organ that is present near to the heart, beneath the breastbone.
