Biodiversity

Question 1

Define species

Answer 1

A group of organims that are capable of breeding to produce living + fertile offspring

Question 2

Define biodiversity

Answer 2

The variety of genes, species and habitats within a particular area

Question 3

Define classification

Answer 3

Organisation of organism into groups

Question 4

Benefits of courtship

Answer 4

Enables organisms to recognise their own species, identify a mate with a capacity to breed, form a pair bond , synchronise mating and become able to breed themselves

Question 5

What is phylogenetic classification

Answer 5

Divides organisms into groups based on evolutionary relationships and homologous characteristics.

Question 6

What is artificial classification

Answer 6

Divides organisms into groups based on analogous characteristics such as leaf shafe and number of legs and type of wing.

Question 7

Define species diversity

Answer 7

A measure of the number if different species and the abundance of individuals in each of these species within a community

Question 8

Define species richness

Answer 8

A measure of the number of different species in a community at a given time

Question 9

Standard deviation is …

Answer 9

a measure of the width of a normal distribution curve and an indication of the range of values

Question 10

Hierachy is…

Answer 10

are smaller groups arranged within larger groups with no overlaps

Question 11

List the hierachy

Answer 11

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

Question 12

Farming techniques that reduce biodiveristy

Answer 12

1. Destruction of hedgrows
2. Selective Breeding
3. Monocultures
4. Over-grazing
5. Draining wetlands + Filling in ponds

Question 13

How do we measure biodiversity

Answer 13

Index of diversity

The larger the value of D , the greater the species diversity

Question 14

How to investigate diversity

Answer 14

1. The frequency of observable characteristics
2. Base sequence of DNA or mRNA
3. Amino acid sequence of proteins

Question 15

How to increase biodiversity

Answer 15

1. Use hedgrows instead of fences
2. Rotate crops
3. Limit use of pesticides and herbicides

Question 16

Why is it useful to calulate the index diversity

Answer 16

It is more subject to random variation than any other index and species richness alone doesn’t account for evenness across species

It describes the relationship between thee number of different species and the abundance of individuals in each of these species within a community