Question
Define acquired immunity and describe its types.

Answer

self

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

Similar questions

In which way has the study of biology helped us to control infectious diseases?
Draw a labelled diagram of an anther lobe at microspore mother cell stage. Mention the role of different wall layers of anther.
  1. How does a chromosomal disorder differ from a Mendelian disorder?
  2. Name any two chromosomal aberration associated disorders.
  3. List the characteristics of the disorders mentioned above that help in their diagnosis.
  1. Write the scientific name of the organism Thomas Hunt Morgan and his colleagues worked with for their experiments. Explain the correlation between linkage and recombination with respect to genes as studied by them.
  2. How did Sturtevant explain gene mapping while working with Morgan?
What do you understand by connecting link? Explain with examples.
The following is the illustration of the sequence of ovarian events (a – i) in a human female.

Write the difference between ‘c’ and ‘h’.

Pragyan takes fruits, vegetables, bread and egg curry in a day's menu. While his teacher was giving a lecture on trophic level, he got fascinated and asked following questions from his teacher.
  1. How many trophic levels does he occupy in different food chains?
  2. Represent atleast three food chains.
  3. Which among them gives him the maximum amount of energy? Give reason.
  4. What values are shown by Pragyan?
  1. Explain with the help of Griffith’s experiment how the search for genetic material was conducted and what was the conclusion drawn?
  2. How did MacLeod, McCarty and Avery establish the biochemical nature of the so called ‘genetic material’ identified by Griffith in his experiment.
Explain the surgical method of contraception with the help of a labelled diagram.###Write the name of a surgical contraceptive method and explain it which can be adopted by the male member of the couple.
Arrange the following hormones in sequence of their secretion in a pregnant woman.
hCG, LH, FSH, Relaxin.