Q2 of 27 Page 1

Give the scientific name of the source organism from which the first antibiotic was produced.

Penicillium notatum - the scientific name of the mould from which the first antibiotic penicillin was produced. The chemical produced by this mould has prevented the growth of bacteria staphylococci.


More from this chapter

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1

How many pollen grains and ovules are likely to be formed in the anther and the ovary of an angiosperm bearing 25 microspore mother cells and 25 megaspore mother cells respectively?

OR


In the case of polyembryony, an embryo A develops from the synergids, and the embryo B develops from the nucellus. State the ploidy of embryo A and B.

 3

The prophase I stage of meiosis plays a vital role in r-DNA formation. Justify with reason.

 4

Name the technique by which Gene expression can be controlled with the help of an RNA molecule.

 5

Define Diapause

OR


Standing Crop