Biodiversity and Species Diversity Quiz

Species diversity is the number of different species and the number of different individuals in a community. It can be measured by simply counting the number of species present via methods such as random ______

Genetic diversity is a measure of the genetic variation found in a particular species, in other words it is the number of alleles in a gene ______

Ecosystem diversity is the range of different ______

Biodiversity can also be measured using the index of diversity (D) which can be calculated as following: D = Diversity index N = total number of organisms n = total number of organisms of each species Σ = the sum of ______

Agricultural ecosystems reduce the biodiversity and the number of species present because humans select for particular characteristics. This therefore reduces the number of alleles and therefore the genetic diversity of the ______

Farmland is typically used for only a single species and therefore means that fewer individuals of other species can ______ there

Comparing genetic diversity can be done by comparing the frequency of measurable or observable ______

The genetic diversity within or between species can be determined by comparing the base sequence of ______

Preserving wetlands instead of draining these for farming use helps in maintaining ecosystem ______

Using hedgerows instead of fences is a technique to maintain ecosystem ______

The genetic diversity of a species can be measured by sampling ______ from different individuals

Comparing observable characteristics like the shape or size used to be a way in which scientists classified species, but now they use gene technology to read the base sequences of ______

The greater the number of alleles in a population, the greater the ______ diversity.

A species consists of more than one ______.

Species which share the same niche ______ with each other.

The idea that better adapted species survive is the basis of ______ selection.

Evolution is the process by which the frequency of alleles in a gene pool changes over time as a result of ______ selection.

An environmental change can lead to a shift in the ______ pressure.