Organisms and P...

Scholars caught, marked and released 80 fishes in a pound. Later 100 fishes were caught at random. 40 of them were marked. The number of fishes in the pond is 

Density of population (D) is 

An intimate relationship between two species in which co-evolution and adaptation occur is

A single bacterium is actively growing in a medium that supports its growth up to $$100$$ million. Assuming the division time of the bacterium as $$3$$ hours and the life span of non-dividing bacteria as $$5$$hours, which one of the following represents the maximum number of bacteria that would be present at the end of $$15$$ hours?

In a population of predator and prey it was seen that when the prey population was numerically high the predator population consumed more and more prey. This is because the predator population 

Competitive exclusion principle stating that inferior species is eliminated eventually after prolonged competition was given by 

_________ rule states that mammals from colder climates generally have shorter ears and limbs to minimize heat loss. 

What does the shape of the given age pyramids (A to C) reflect about the growth status of populations? 


            A                                 B                                  C

Island bio geography theory states that the number of species on an island is determined by immigration rates of new species to the island and extinction rates of species on the island immigration rates to an island decline as its distance froooom the mainland increases and extinction rates decrease with increasing island size when the immigration and extinction rates on an island are equal, the number of species on the island reaches equilibrium. 
Which of the following gives the correct combination oof distance (near and far) and area (small and rage )of island where species (s-s) occur?

Which is correctly labelled with respect to the given diagram?