Population — Flashcards
ICSE · Class 10 · Biology
34 flashcards for Population (ICSE Class 10 Biology) to test yourself on key terms and facts. Sample: "What is population in biology?"
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Get startedWhat is population in biology?
Answer
Population is the group of interbreeding individuals of a species present in a geographical region. In human beings, it refers to the number of males and females of different age groups within a geogr…
What is demography?
Answer
Demography is the statistical study of human population. It includes study of population growth, its composition such as age and sex-ratio, and its distribution in space.
What is population density?
Answer
Population density is the number of individuals of a population per square kilometre at a given time. It helps to show how crowded a region is.
What is natality?
Answer
Natality, or birth rate, is the number of live births taking place per year per thousand individuals of a population.
What is mortality?
Answer
Mortality, or death rate, is the number of deaths occurring per year per thousand individuals of a population.
What is growth rate of a population?
Answer
Growth rate is the difference between birth rate and death rate. Growth Rate = Birth rate − Death rate.
What does a J-shaped population growth curve indicate?
Answer
A J-shaped curve indicates a rapidly growing population.
What does an S-shaped population growth curve indicate?
Answer
An S-shaped curve indicates that after growing to a certain extent, the population has become stable.
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