Question

Five Mark Questions.
(a) List the different attributes that a population has and not an individual organism.
(b) What is population density? Explain any three different ways the population density can be measured, with the help of an example each.

Answer 1

Population density is regularly carried out to living organisms, maximum of the time to humans. It is a key geographical term. Low densities might also additionally cause an extinction vortex and result in similarly decreased fertility.

Complete step by step answer:
To answer this question, we have to know about the population. A population is referred to as a collection of members belonging to identical species residing collectively in a place and functioning as a unit.

The one-of-a-kind attributes of a population are given below:
1. Birth rate- It is described because the wide variety of births consistent with a thousand populations of individuals is consistent with each year.
2. Death rate- It is described as a wide variety of deaths according to the thousand populations of individuals according to the year.
3. Sex ratio- It is described as wide variety of men or women per thousand people.
4. Age distribution- It refers back to the wide variety of people of various ages in a given populace.
5. Population density- It is the wide variety of people mentioned according to the unit region at a given time.
- Population density is described as the quantity of population per unit region at a given time. Population density is the wide variety of people according to unit geographic region, for instance, wide variety according to rectangular meter, consistent with hectare, or per rectangular kilometer.

The 3 special methods of measuring population density are:
1. Arithmetic density- It is described as the wide variety of all individuals that stay in a per unit region all through a country.
2. Physiological density- It is described because of the wide variety of humans per unit region of arable land.
3. Agricultural density- It is described as the population density measured because of the wide variety of farmers per unit region of arable land.
Population Density (PD) =$\dfrac{Number\;of\;individuals\;in\;a\;region(N)}{Size\;of\;unit\;area\;in\;the\;region(S)}$

Note: Population density is frequently used as an easy relative count of ways an organism responds to nearby situations. If situations are not properly for the species, the density could be low (organisms may have died or moved out of the sampled place), while if situations are properly the density could be high (organisms may have reproduced and/or immigrated into the place). In this way, modifications in density can give perception into the natural records of the alternatives and tolerances of members of the species.