Classification system are chaning every now and then because an attempt has been made to evolve such a sytem ultimately which is able to explain evolutionary relations in organisms. What was the correct sequence of these types of classification systems with respect to their solutions:-

Every enzyme in IUB system of classification has been given a code number which consists of

Every enzyme in IUB system of classification has been given a code number which consists of

Natural system of classification is I. based on one or few characters which are not related to phylogenetic significance. II. based on overall characters which indicated natural relationships. III. Based on evolutionary and genetic relationships of organisms. IV. given by AL de Jussieu.

Given below are six sentences of a passage. The first and sixth sentences are given in the beginning as SI and S6. The middle four-sentence in each have been jumbled up and labelled as P, Q, R and S. You are required to find the proper sequence of the four sentences. S1: The climate question presents a leapfrog era for India's development paradigm. S6: This presents a good template for India, building on its existing plans to introduce electric mobility through buses first, and cars by 2030. P: It is aimed at achieving a shift to sustainable fuels, getting cities to commit to eco-friendly mobility and delivering more walkable communities, all of which will improve the quality of urban life. Q : At the Bonn conference, a new Transport Decarbonisation Alliance has been declared. R: This has to be resolutely pursued, breaking down the barriers to wider adoption of rooftop solar energy at every level and implementing net metering systems for all categories of consumers. S : Already, the country has chalked out an ambitious policy on renewable energy, hoping to generate 175 gigawatts of power from green sources by 2022. The correct sequence should be

Optical Fibre: Optical fibre works on the principle of total internal reflection. Light rays can be used to transmit a huge amount of data, but there is a problem here - the light rays travel in straight lines. So unless we have a long straight wire without any bends at all, harnessing this advantage will be very tedious. Instead, the optical cables are designed such that they bend all the light rays' inwards (using TIR). Light rays travel continuously, bouncing off the optical fibre walls and transmitting end to end data. It is usually made of plastic or glass. Modes of transmission: Single-mode fibre is used for long-distance transmission, while multi mode fiber is used for shorter distances. The outer cladding of these fibres needs better protection than metal wires. Although light signals do degrade over progressing distances due to absorption and scattering. Then, optical Regenerator system is necessary to boost the signal. Types of Optical Fibres: The types of optical fibers depend on the refractive index, materials used, and mode of propagation of light. The classification based on the refractive index is as follows: • Step Index Fibres: It consists of a core surrounded by the cladding, which has a single uniform index of refraction. • Graded Index Fibres: The refractive index of the optical fibre decreases as the radial distance from the fibre axis increases. Optical fibre is made of:

In this sectin each item consists of six sentences of a passage. The first and sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled as P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly on the Answer Sheet. S1 : Politics is exciting because people disagree. S6 : It is not solitary people who make politics and a good society, it is the people together which make good politics and society. P : For Aristotle politics is an attempt to create a good society because politics is, above all, a social activity. Q : They also disagree about how such matters should be resolved, how collective decision should be made and who should have a say. R : They disagree about how they should live. S : Wh should get what ? How should power and other resource be distributed ? Should society be based on cooperation or conflict ? And so on. The correct sequence should be (a) R S Q P (b) P Q S R (c) Q S R P (d) R S P Q