Question

What is meant by the term ‘Darwin fitness’?
A) Ability to survive and reproduce
B) High aggressiveness
C) Healthy appearance
D) Physical strength

Answer 1

Hint: The biological concept of fitness is defined as reproductive success. In Darwinian terms the phrase is best understood as "Survival of the shape which will leave the foremost copies of itself in successive generations.

Complete answer:
Darwinian fitness of an organism is concentrated on its reproductive fitness. It stated that any species having better adaptability will leave progenies through reproduction and thus will ensure continuity on earth, quite less adaptive ones. Reproductively fit individuals survive and are selected naturally.
The survival and reproductive success of a private is directly associated with the ways its inherited traits function within the context of its local environment. Whether or not a private survives and reproduces depends on whether it's genes that produce traits that are well adapted to its environment.
Like all organisms, we are bundles of adaptations that every have local jobs. But all of those jobs are subservient, under selection, to the goal of reproduction. In other words, ultimately, we've been designed to breed, and that is it yet more and more people are choosing to not reproduce.
Some of the abiotic, or nonliving, factors that affect organisms' ability to survive include temperature, light availability, soil type, water, salinity levels of soil or water, oxygen, acidity/alkalinity (pH levels) of soil or water, inorganic nutrient levels, other chemicals, radiation, seasonal temperature etc.

Hence, option (A) is correct.

Note:
An adaptation is any heritable trait that helps an organism, like a plant or animal, survive and reproduce in its environment. The term "fitness" in evolutionary biology means the power of an organism to expire its genetic material to its offspring. Biological or "Darwinian" fitness is having the ability to measure long enough to breed and keep the population or species alive.