A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.

Write sample space 'S' and number of sample point 'n(S)' for the following experiment. Also write events A,B,C in the set form and write n(A), n(B), n(C) : Two dice are rolled simultaneously: Event A: The sum of the digits on upper faces is a multiple of 6. Event B: The sum of the digits on the upper face is minimum 10. Event C: The same digit on both the upper faces.

The coutries which do not have oil reservatirs in their land import oil from other countries. But sometimes during transporting oil through sea routes, accidental oil spilling occurs. This oil spilled in the ocean may prove fatal and toxic to aquatic animals. Therefore, removel of this spilled oil is essential for protection of aquatic life. For removing this oil layer, certain microbes like Pseudomonas spp. and Alcanivarax borkumensis are used. These microbes have the ability to destroy the pyridines and other toxic chemicals. The hydrocarbonoclastic bacteria (HCB) are able to decompose the hydrocarbons and bring about the reaction carbon with oxygen resulting in formation of CO_(2) and water. Like oil spills cause damage to aquatic life, platic forms the major part of the grabage on land. Plastics are difficult to degrade as they are made up of PET. By research, various species like Vibrio and Idenoella sakaiensis which can degred PET.By research, various species like Vibrio and Ideonella sakaiensis which can degrade PET have been identified. There are cartain species of microbes which can decompose rubber from garbage. Based on the given paragraph answer the following question. Name any two species of microbes which can degrade rubber from

Analyse the events during every stage of cell cycle and notice how the following two parameters change: Amount of DNA content (C ) per cell.

Write sample space 'S' and number of sample point n(S) for each of the following experiments. Also write events P, Q, R in the set form and write n(P), n(Q), n(R). Two coins are tossed simultaneoulsy . Condition for event P : To get head on both coins . Conditon for event Q : To get tail on first coins.

Analyse the events during every stage of cell cycle and notice how the following two parameters change: Number of chromosomes (N) per cell.