Sex ratio in a population usually varies among age classes. True False According

Question

Sex ratio in a population usually varies among age classes. True False According to the facilitation hypothesis, pioneer species modify the environment in ways that make it more suitable for survival of all species. make it less suitable for their own survival, but more suitable for survival of late-successional species. make it more suitable for their own survival, and less suitable for other species. make it less suitable for their own survival, but more suitable for survival of other pioneer species. make it less suitable for survival of all species. Darwin is often considered the father of evolutionary thought. Which of the following terms is/are not part of Darwin's analysis? natural selection gene frequencies adaptation fitness none of the above Within a species, individuals with smaller body size often have lower reproductive output then larger individuals. Species that are K-strategists tend to produce more offspring than those that are r-strategists True False

Explanation / Answer

Ans 57) - True , In most species, the sex ratio varies according to the age profile of the population

Ans 58) -Make it more suitable for their own survival,but more suitable for survival of Late successional species.

Ans 59) - None of the above

Explanation - In 1859, Charles Darwin published the book The Origin of Species that presented a theory to explain life's great diversity of organisms.Evolution is the process by which species come to possess genetic adaptations to the environment. Its working mechanism is natural selection. The evolution of a population also involves a change in gene frequency. A changing pattern of genetic variation from one generation to the next occurs as natural selection determines the fittest individuals.

Ans 60 ) - False

Ans 61) - False, K strategist produces less offsprings as compare to R strategist. That is High r , low k.

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