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All India-2017
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Q6 of 49 Page 1

Name the type of immunity the colostrum provides to a new-born baby. Write giving an example where this type of immunity should be provided to a person.

Colostrum is the yellow fluid comes out from the mother’s breast just after the child birth. It contains antibodies such as IgG, IgM, and IgA which provide passive immunity to the new-born.


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26

Write the different components of a lac-operon in E. coli. Explain its expression while in an ‘open’ state.

3

Name the specific type of gene that is incorporated in a cotton plant to protect the plant against cotton boll worm infestation.

8

Write the binomials of two fungi and mention the products/bioactive molecules they help to produce.

10

“Pollen grains in wheat are shed at 3-called stage while in peas they are shed at 2-called stage.” Explain. Where germ pores are present in a pollen grain?

Questions · 49
All India-2017
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