Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

πŸ”΄πŸ”΄πŸ”΄πŸ”΄πŸ”΄πŸ”΄πŸ”΄ > Biodiversity > Flashcards

Biodiversity Flashcards

1
Q

Biodiversity

A

Number of species and individuals within a community

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Species richness

A

Number of different species in a community

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Population

A

All the individuals living in the same population in the sane area at the same time that interbreed to form fertile offspring’s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Genetic diversity

A

Difference in DNA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Niche

A

An organisms role within an ecosystem and they they behave and interact with other species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Habitat

A

Place where an organism lives within an ecosystem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Species

A

Group of similar organisms with the same genes that reproduce to form fertile offspring’s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Community

A

All the individuals of all species living together in the same area at the same time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Index of diversity

A

Number of individuals of each species in a community

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Equation

A

D= 𝑁(π‘βˆ’1) / βˆ‘ 𝑛(π‘›βˆ’1)
D= index of diversity which is the number of induviduals in a community
N= total number of individuals all together
βˆ‘= sum off ( add all the number of organisms in a species times by n-1)
n= the number of induviduals in that specific species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What information is required to calculate an index of diversity for a particular community?

A

Total number of all organisms
Number of individuals of each species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Explain why an index of diversity may be a more useful measure of biodiversity?

A
  1. Measures number of individuals of each species which can determine species diversity whereas biodiversity is the number of individuals n a community
  2. Some species may present in low or high numbers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Give 2 advantages of using an Index of biodiversity rather than an indicator species?

A
  1. Index of diversity measures the number of individuals of each species in a community whereas indicator species only takes into account the number of species in a community.
  2. You know need to identify each species
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Suggest one economic argument for maintaining biodiversity?

A

Agriculture, farming , tourism , conservation of habitats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Farming

A
  1. Farming deceases stability of an ecosystem
  2. Land is ploughed so decrease in plant species
  3. Land is cleared which means animals are lost so reduces food source , niches , habitats
  4. Fertilisers used to increase growth of crop which decreases/ no growth of other crops so less variety
  5. Herbicides and pesticides kill unwanted species
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Classification

A

Grouping organisms based on shared characteristics

17
Q

Name 8 taxa groups

A

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

18
Q

Domain

A

Most amount of organisms and split into 3 groups
1, bacteria
2, archaea
3. Eukarya

19
Q

Bacteria

A

β€’ No membrane bound organelles e.g. no mitochondria, Golgi or Rough Endoplasmic Reticulum
β€’ Smaller ribosomes (70S) than Eukaryotic cells
β€’ Cell wall made from murein
β€’ Single loop/circular DNA not associated with histones.

20
Q

Archaea

A
  1. Fatty acid and glycerol have Esther bonds not ester.
  2. No mierin in wall
  3. More complex rna polymerase
  4. Genes and protein are more similar to eukaryotes
21
Q

Eukaryotes

A

The 4 kingdoms are : fungi, protists , anamalia and plantae

22
Q

Heirchary

A

Groups within groups that don’t overlap

23
Q

Phylogenetics

A

All organisms envelope from same common ancestor but those who share most common are more closely and recently related

24
Q

Courtship behaviour

A
  1. Attracts opposite sex
  2. Attracts same species
  3. Indication of sexual maturity
  4. Stimulates release of gametes
  5. Forms pair bond
25
Q

Modern classification methods

A
  1. Base sequence of DNA
  2. Base sequence of mRNA
  3. Amino acid sequence of proteins
  4. Observable characteristics
26
Q

What system is used to give species a universal name?

A

Binomial naming system

27
Q

What are the two components to a binomial name?

A
  1. Genus ( first letter capital)
  2. Species
    First letter capital, rest is lowercase and all must be underlined

πŸ”΄πŸ”΄πŸ”΄πŸ”΄πŸ”΄πŸ”΄πŸ”΄ (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions