1 : slow increase , 2 : rapid increase , 3 : stable , 4 : decrease .
s-shaped/curved
A form of population growth in which the rate of growth is related to the number of individuals present. Increase is slow when numbers are low but rises sharply as numbers increase. If population number is plotted against time on a graph a characteristic J-shaped curve results (see graph). In animal and plant populations, such factors as overcrowding, lack of nutrients, and disease limit population increase beyond a certain point and the J-shaped exponential curve tails off giving an S-shaped (sigmoid) curve. occurs when the growth rate of a mathematical function is proportional to the function's current value.
a J---
campylobacter
Bacilli (s. bacillus) are rod-shaped bacteria.
an S
False.
The graph of a logistic population growth is shaped like the letter "S" or an elongated "S". It starts with exponential growth, then slows down as it approaches the carrying capacity before eventually leveling off.
Logistic growth
logistic growth
That it is non-linear. If it is a graph of a polynomial, it would need to be a polynomial of odd order. But it could be the graph of the tangent function, or a combination of reciprocal functions over a limited domain. In fact the s shaped line, by itself, indicates very little.
The classic "S" shaped curve that is characteristic of logistic growth.
The classic "S" shaped curve that is characteristic of logistic growth.
s-shaped/curved
An exponential model has a j-shaped growth rate that increases dramatically over a period of time with unlimited resources. A logistic model of population growth has a s-shaped curve with limited resources leading to a slow growth rate.
It is a bit like an s-curve. See it for yourself at the following link.
A population that grows until it reaches its carrying capacity typically shows an S-shaped curve, known as logistic growth. Initially, the population grows slowly, then accelerates, and finally levels off as it reaches the carrying capacity of the environment.