Download App

Human Health and Disease — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
Differentiate the following and give examples:
Innate and acquired immunity.
✓

Answer

Innate and acquired immunity.
  Innate immunity Acquired immunity
(i). It is a non-pathogen specific type of defense mechanism. It is a pathogen specific type of defense mechanism.
(ii). It is inherited from parents and protects the individual since birth. It is acquired after the birth of an individual.
(iii). It operates by providing barriers against the entry of pathogenic agents. It produces primary and secondary responses, which are mediated by B-lymphocytes and T-lymphocytes.
(iv). It does not specific memory. It is observed by an immunological memory.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions in detail." from Human Health and Disease→Human Health and Disease — all question types→BIOLOGY STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

What is artificial method of vegetative propagation? Describe: (i) cutting (ii) Budding
→
Write a short note on Adaptations of plants to water scarcity Or Adaptations in desert plants.
→
Enlist the steps involved in inbreeding of cattle. Suggest two disadvantages of this practice.
→
  1. How does the Hardy - Weinbergís expression (p2 + 2pq+ q2 = 1) explain that genetic equilibrium is maintained in a population.
  2. List any two factors that can disturb the genetic equilibrium.
→
Throughout sexual reproduction the chromosome number is maintained same. How is this done?
→
  1. What is green revolution? Mention the steps that led to it.
  2. Name the scientist whose contribution led to the development of semi-dwarf wheat varieties in India.
→
How has the use of Agrobacterium as vectors helped in controlling Meloidegyne incognitia infestation in tobacco plants? Explain in correct sequence.
→
Following are two groups of birth control measures. Rank the members of each group from the best (1) to the worst (4) on the basis of effectiveness.
S.No.
A
S.No.
B
(a)
Coitus interruptus
(e)
Vasectomy
(b)
Spermicidal Jelly/ cream
(f)
Natural family planning
(c)
Condom + spermicide
(g)
Diaphragm + spermicide
(d)
Natural family planning
(h)
IUD
→
Answer the following questions:
State the principle of independent assortment.
→
What is the scenario of deforestation in India?
→