Question

Which one is not a character of the community?

• A. Natality
• B. Dominance
• C. Species diversity
• D. Stratification

Answer 1

The correct option is A

Natality

The correct option is A.

Explanation of the correct option:

1. The most significant factor in population growth is natality.
2. To illustrate natality, the crude or specific birth rate is utilized.
3. When estimating population size (number of births per 1000 people per year), the crude birth rate is utilized, whereas the specific birth rate is used in relation to a specific criterion like age.

Explanation of the incorrect option:

Option B:

1. The most numerous species in a community have a major impact on the occurrence and distribution of other species.
2. Keystone species, on the other hand, have far-reaching effects on communities that greatly outweigh their abundance.

Option C:

1. Species diversity refers to the number of different species that exist in a given community.
2. The effective number of species is the number of species that must be equally abundant to obtain the same mean proportional species abundance as found in the dataset under review.

Option D:

1. The vertical distribution of various species in different layers is called stratification.
2. E.g. in the forest ecosystem, trees are present at the top level followed by shrubs in the second layer and then grasses at the bottom..

Final answer: Natality is not a character of the community.