Biodiversity

Question 1

What is the definition of Biodiversity?

Answer 1

The variety of living organisms in an area

Question 2

What is Habitat diversity?

Answer 2

The number of habitats in an area

Question 3

What is species diversity?

Answer 3

The number of different species and the abundance of each species in an area

Question 4

Name the 5 Kingdoms

Answer 4

• Prokaryotae
• Protoctista
• Fungi
• Plantae
• Animalia

Question 5

Name the 3 domains

Answer 5

• Bacteria
• Archaea
• Eukaryote

Question 6

Why are Random samples taken?

Answer 6

To avoid bias

Question 7

Outline how to do random sampling

Answer 7

• Take samples at regular distances
• Use random numbers for coordinates
• May include infrequent species
• Record odd plants, but don’t use in statistical analysis

Question 8

What problems may come from trying to sample animals?

Answer 8

• May disturb environment

- Give inaccurate results

Question 9

What is species richness

Answer 9

Number of different species present in a habitat

Question 10

What is species evenness?

Answer 10

Number of individuals in each species, relative abundance of species

Question 11

What does a high index of biodiversity indicate?

Answer 11

• Many species present in habitat

- Stable habitat

Question 12

What does a low index of biodiversity indicate?

Answer 12

• Few species present
• unstable habitat
• A small change would have large impact on habitat/species/ecosystem

Question 13

What is genetic diversity?

Answer 13

Number of all variations at a locus in a population/species

Question 14

Genetic diversity =

Answer 14

Number of polymorphic gene loci
————————————————— x 100 (%)
Total number of loci

Question 15

Name the 6 factors affecting biodiversity

Answer 15

1. Hunting for food
2. Overharvesting
3. Killing for protection/to remove competition
4. Pollution and habitat destruction
5. Population growth
6. Introduction of new flora and fauna