Question

Natality refers to
A) Number of individual leaving the habitat
B) Death rate
C) Number of individual entering a habitat
D) Birth rate

Answer 1

Hint: The estimation of the Natality of animals has been an important aspect of the survival science of organisms. Researches to determine whether a plant could be extinct due to nature or resource scarcity have been carried out.

Complete Answer:
Population is the organisms of the same genus or species that live in a single geographical region and are capable of interbreeding. The sexual community area is the area where interbreeding with any pair within the region is possible and is more common than cross-breeding with individuals from other regions.

Now, let us find the solution from the options-
- Emigration is the number of people in the population who have fled the community and migrated elsewhere during the time under review. Thus, option A is not the correct option.
- The death rate is a count of the amount of deaths per unit of time in a given population, weighted down to the size of that population. Usually, mortality rates are calculated in death units per 1,000 persons per year; therefore, a death rate of 9.5 in a community of 1,000 would imply 9.5 mortality per year in the population as a whole, or 0.95% of the total. Thus, option B is not the correct option.
- Immigration is the number of organisms of the same genus that within the time frame under review have entered the ecosystem from elsewhere. Thus option C is not the correct option.
- The Natality rate is used to measure a population's dynamics. They are the major variables in deciding whether a population grows, declines or stays the same in size. Natality is the main factor in the growth of a nation. For estimating population growth, crude birth rate is used, while precise birth rates are used according to a particular parameter such as age. That is actually called the birth rate.

Thus, the correct answer is option (D) Birth date.

Note: For measuring animal Natality, the same birth rate is used. Age is the criterion used. The Natality of animals is represented as an age-specific birth schedule. This is reflected by the number of young people in a separate age unit of time.