C11 Biodivirsity

Question 1

What are the three ways biodiversity can be studied

Answer 1

1. Habitat
2. Species
3. Genetic

Question 2

Define habitat biodiversity

Answer 2

Refers to the number of different habitats within an area

Question 3

Define species biodiversity

Answer 3

Made up of two components:
- species richness - number of different species living in an area
- species evenness - a comparison of the number of individuals in each species compared to the whole community

Question 4

Define genetic biodiversity and what does it allow

Answer 4

A. The variety of genes that make up a species
B. Allow different characteristics to be displayed and better adaptation to the environment

Question 5

What is sampling

Answer 5

Taking measurements of a limited number of individual organisms present in a particular area

Question 6

What can ambling be used for

Answer 6

• estimate the number of organisms within an area without counting them all
• measure a characteristic of a particular organism

Question 7

What are the 2 types of sampling

Answer 7

1. Random
2. Non random

Question 8

Define random sampling

Answer 8

Selecting individuals by chance, each individual in a population has an equal chance of being picked

Question 9

Define non random sampling

Answer 9

Where the sample is not chosen at random. It involves three techniques
1. Opportunistic
2. Stratified
3. Systematic

Question 10

Define opportunistic sampling

Answer 10

Weakest form of sampling as may not be representative of the population. This involves using the organisms that are confidently