Evolution

The correct answer is option (D): Ramapithecus → Australopithecines → Homo erectus → Neanderthal
Human evolution is the process by which human beings developed on Earth from now-extinct primates. The different stages of human ancestors are: Ramapithecus → Australopithecus → Homo habilis → Homo erectus → Neanderthal → Cro Magnon → Homo sapiens

The correct answer is option (E): Directional and Disruptive
More individuals acquire worth other than the mean character value as a result of a directional shift brought about by natural selection. As a result of the disruption caused by natural selection, more people gain peripheral character value at both extremities of the distribution curve. When one particular characteristic or phenotype is chosen above another, this is known as directional selection. The allele frequency tends to tilt more in one way due to the selection pressure favoring one characteristic. The trait distribution is such that the graphs have a propensity to lean to one side. When the two extreme qualities are preferred without taking the intermediate feature into account, disruptive/diversifying selection takes place. The pattern of the trait distribution places the higher peaks on the extreme and a lower curve on the middle.

The correct answer is option (D): Fig and Wasp-Mutualism
The fig and wasp show mutualistic behavior. In a mutual relationship, both parties get benefited. In this case, the wasps are the only pollinators for the fig tree. The female wasp lays their eggs in the flower of the fig tree and spread pollen. A chemical is also injected by the wasp into the fig, due to which, the flower ovaries will become galls that will act as a shelter and the offspring will feed on it. Therefore, the fig needs the wasp to spread their pollen and the wasp needs the fig to lay eggs. Egret and Grazing cattle shows commensalism Sea anemone and clown fish shows mutualism

The correct answer is option (A): Sea-anemone and clown fish Predation

The Hardy-Weinberg equilibrium states that allele frequencies in a population will remain constant from generation to generation in the absence of evolutionary influences. Factors such as mutation, genetic drift, migration, non-random mating, and natural selection can affect this equilibrium. However, adaptive diffusion, which refers to the spread of advantageous traits within a population, does not directly influence the equilibrium, as it is more related to natural selection and migration rather than the equilibrium conditions.