Most percussion instruments such as cymbals, gong, and tabla do not have a definite pitch and are used for rhythm and impact.(True or false)

In gymnosperms, the male and the female gametophytes do not have an independent free-living existence. (True/False)

a) Cancer is one of the most dreaded diseases of humans. Explain 'Contact inhibitions' and Metastasis' with respect to the disease. b) Name the group of genes which have been identified in normal cells that could lead to cancer and how they do so? c) Name any two technique which are used to detect cancers of interorgans? d) Why are cancer pateints often given a-interferon as part of the treatment.

A : Lichens do not grow in polluted area having SO_(2) . R : Lichens secrete carbonic acid and oxalic acid on barren rocks. (a) If both assertion & reason are true and the reason is the correct explanation of the assertion (b) If both assertion & reason are true but the reason is not the correct explanation of the assertion (c) If assertion is true statement but reason is false (d) If both assertion and reason are false statements

Find out which among the following is true and which is false (i) Recombinant DNA technology has made it possible to engineer microbes, plants and animals such that they have novel capabilities. (ii) Genetically modified organisms have been created by using methods other than natural methods to transfer one or more genes from organism to another, generally using techniques such as recombinant DNA technology. (iii) GM plants have been useful in increasing crop yields, reduce post harvest losses and make crops more tolerant of stressess. (iv) Recombinant DNA technology process have made immense impact in the area of healthcare by enabling mass production of safe and more effective therapeutics. (v) since the recombinant therapeutics are identical to human proteins, they do not induced unwanted immunological responses.