Biodiveristy

Question 1

Species richness

Answer 1

Number of diff species in area at same time

Question 2

Species diversity

Answer 2

Number of diff species and individuals within each species in a community

Question 3

Habitat

Answer 3

Physical biological and environmental factors which a species lives in

Question 4

Index of diversity

Answer 4

Relationship between numbers of species in community and number of individuals in species

Question 5

Farming techniques reduce biodiversity by

Answer 5

Removing grassland and forests in fields which removes habitat
Removing habitat also removes food source

Question 6

Conservation

Answer 6

Measures to protect habitats from human imput such as farming

Question 7

N =

Answer 7

Total number of organasms off all the species

Question 8

n =

Answer 8

Population size of one species

Question 9

Investigating variation

Answer 9

Take a large sample
Randomly sample
Stats test to see difference

Question 10

Ways in which farming reduce biodiversity

Answer 10

1. Over grazing- reduce plants
2. Monoculture- only growing one culture + only attract insect which will ate
3. Selective breeding- characteristics selected narrow gene pool
4. Filling ponds - make space for farming

Question 11

Compromise between conservation and farming

Answer 11

1. Only selective breed one species
2. Monoculture - rotation of plant which will grow

Question 12

Natural selection

Answer 12

1. Random mutation result in new allele of gene
2. New allele may be advantageous and increase reproductive success
3. The advantageous allele inherited by next generation
4. Will increase over time In frequency

Question 13

Explain why it is more useful to calculate an index of diversity than to record species richness

Answer 13

Index of diversity shows population size of each species
Useful because may be many of some species

Question 14

Suggest how to measure the rate of water flow in the river

Answer 14

Use a data logging device