Age distribution - population parameters and regulation, Biology

Assignment Help:

Age Distribution - Population Parameters and Regulation

It is obvious that individuals in a population will be of different age groups. Relative numbers of young and old individuals in a population will significantly influence the behaviour of a population such as natality and mortality. The age structure of any population can be classified into three categories, i.e. pre-reproductive, reproductive and post-reproductive ages. Mortality usually varies with age as chances of death are more in early pre- reproductive and late post-reproductive periods. Likewise, natality is restricted to the reproductive age of individuals in a population.

The relative duration of these ages in proportion to life span is different in different organisms. For example, in modern man the three 'ages' are relatively equal in length, about one third of the life span. In comparison, the primitive man had much shorter post reproductive period. Many animals and plants have quite long pre-reproductive period. For example, a locust in its seventeen years of life has an extremely long development history with adult life lasting only less than a year.


Related Discussions:- Age distribution - population parameters and regulation

Define fluconazole, Define Fluconazole It is a weaker inhibitor of CYP...

Define Fluconazole It is a weaker inhibitor of CYP3A4 than itraconazole or ketoconazole but may still increase serum concentrations of drugs metabolized by 3A4, like cyclospor

Azotobacter, Azotobacter Azotobacter is known to possess the following...

Azotobacter Azotobacter is known to possess the following two mechanisms to protect its nitrogenase from oxygen inhibition. Respiratory protection and Confor

Management of hypertension, Q. Management of hypertension? the manageme...

Q. Management of hypertension? the management of hypertension, angina pectoris and myocardial infarction. It must be clear to you that some aspects of dietary management may di

What are properties that make water special for life, Q. What are the major...

Q. What are the major water properties that make water special for life? The water properties that make water biologically important are molecular polarity, thermal stability (

Dietary management of children with diarrhoea, Q. Dietary Management of Chi...

Q. Dietary Management of Children with Diarrhoea? Diarrhoeas are more common in children and malnutrition often leads to the elicitation of this symptom as undernourished are m

What is the initial maintenance steps of implants, Initial Maintenance Step...

Initial Maintenance Steps of implants It is very essential, that from the beginning of the patient interaction regarding the implant therapy, through the diagnosis and planning

Causes of hypoglycaemia, Since hypoglycaemia can occur in any diabetic pati...

Since hypoglycaemia can occur in any diabetic patient at any time, it is important for you to learn the causes of hypoglycaemia. Such knowledge will help you to educate the patient

Humans have selectively bred many radically, Humans have selectively bred m...

Humans have selectively bred many radically different domestic animals(e.g., St. Bernard and Chihuahua dog breeds). Does this activity result in evolution? why or why not?

Blastula, Blastula is the ball of cells surrounding a fluid-filled cavity ...

Blastula is the ball of cells surrounding a fluid-filled cavity (known as blastocoel) which is produced by the cleavage of a zygote.

Class Pisces, need different types of information about fishes and their pi...

need different types of information about fishes and their pictures

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd