Advertisements
Advertisements
प्रश्न
Distinguish between Natality and Mortality.
उत्तर
| Natality | Mortality |
| Natality is defined as the number of birth of organisms in a population of a specific area with the passage of time. | Mortality is defined as the number of deaths of organisms in a population of a specific area with the passage of time. |
| Natality is an inherent ability of a population to increase | Mortality decreases population size. |
APPEARS IN
संबंधित प्रश्न
Describe diagrammatic representation of age structure showing declining population.
Define the term natality.
Which of the following is wrongly matched?
Which Union Territory has the highest sex ratio?
State any two districts with favourable sex ratio. Indicate the ratios.
Describe the qualitative aspects of population.
On which of the following factors does the population growth of a country depends upon?
A biologist studied the population of rats in a barn. He found that the average natality was 300, average mortality 250, immigration 50 and emigration 100. The net increase in population is ____________.
Population density at time 't+ l' can be correctly represented as ______.
The type of population represented in the given age pyramid is
Which of the following attributes links ecology to population dynamics, genetics, and evolution?
The number of individuals present per unit space in a given time is known as ______.
What will be the birth rate per individual per hour of a population of 50 Paramoecium present in a pool. The population of Paramoecium increases to 150 within an hour.
Which of the following situations contributes to increase in density of population?
Identify the type of population shown in the given figures (a and b).
Exponential growth equation is `"N"_"t" = "N"_0 "e"^pi` where Nt = population density after time t then what does N0, e and r refers to respectively ____________.
Match the following Column I with Column II.
| Column I | Column II |
| A. Population | (i) Part of the earth has all ecosystems. |
| B. Community | (ii) Assemblage of all individuals belonging to different species of an area. |
| C. Ecosystem |
(iii) Group of similar individuals of the same species, found in an area. |
| D. Ecosphere | (iv) Interaction between living organisms and their physical environment. |
Which of the following conditions represents zero population growth?
Identify ‘A’ in the given graph of population growth:
The aggregate of processes that determine the size and composition of any population is called ______.
What are the decisive factors for population density?
Identify the appropriate term for the number of births under ideal conditions:
Explain the term Emigration.
