Brainscape's Knowledge GenomeTM

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


See full index

Biology 👩🏽‍🔬 > Biodiversity, Species & Taxonomy > Flashcards

Biodiversity, Species & Taxonomy Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

Definition for biodiversity

A

The number of species and the number of individuals of each of the different species within one community

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

Definition Species richness

A

The number of different species in a community

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

Definition community

A

All the individuals of all the 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
4
Q

Definition species

A

Group of similar organisms and with the same genes.
Reproduce to produce fertile offspring

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

Definition Genetic diversity

A

Difference in :
- DNA
- Base sequence
- Alleles
- Genes

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

Definition Niche

A

Organisms role in the ecosystem / community

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

Definition habitats

A

A place where an organism normally lives within an ecosystem

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

Why can’t 2 species occupy the same Niche

A

Due to interspecific competition

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

What information is required to calculate diversity index

A
  1. Number of species
  2. Number of individuals in each species
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does greater diversity mean on the ecosystem stability

A
  1. More favourable climate
  2. More nutrients
  3. More shelter/space available
  4. Greater range of species
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

High diversity means more stable ecosystem, why?

A

Wide variety of organisms ~
So disease & change in climate
Less likely to affect every organism
So ecosystem continues to exist

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

Why is low diversity index refers as unstable

A
  1. Consists of few organisms
  2. If they die then
  3. Severely affects ecosystem
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Suggest one economic argument for maintaining biodiversity

A
  1. Medical and pharmaceutical use
  2. Commercial products
  3. Tourism
  4. Agriculture
  5. Saving local forest communities
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does farming reduce

A

Species diversity

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

When land is cleared why is species diversity decreased?

A
  1. Decrease in variety of plants
  2. Decrease in animals
  3. Reduced variety of food
  4. Reduce niche / habitats
  5. Killing of insects
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does pesticide and herbicide do to species diversity?

A

Kill unwanted species

17
Q

What does fertiliser do to species diversity?

A

Designed to encourage growth of specific crops

18
Q

What’s classification?

A

Grouping of organisms

19
Q

What’s taxonomy?

A

Theory and practice of classification
(So naming & grouping organisms according to shared characteristics)

20
Q

Binomial system meaning?

A

Each species has a two word scientific name
(Name is universal based on Latin & Greek names)

21
Q

How the binomial naming system structured?

A

First word - Genus name
second word - species name

22
Q

Explain what is meant by hierarchy?

A
  1. Groups within groups
  2. No overlap between groups
23
Q

How many levels of taxa are there?

A

8 levels

24
Q

What is the highest taxonomic rank?

A

Domain

25
Q

How many groupings are there in Domain?

A

3

26
Q

What are the 3 groupings in domain?

A
  • Bacteria
  • Archaea ( a group of prokaryotes)
  • Eukarya
27
Q

What does Bacteria have?

A
  • No membrane bound organelles
  • 70s ribosomes
  • Cell wall made from murein
  • single loop DNA
  • Circular DNA
  • Not associated with his tones
28
Q

Archaea resembles bacteria but they differ how?

A
  • Genes & protein synthesis mechanisms more similar to eukaryotes
  • Fatty acid & Glycerol molecules joined by ether bond than ester bond
  • No murein in cell wall
  • More complex RNA polymerase
29
Q

Eukarya domain is divided into how many kingdoms?

A

4

30
Q

What are the 4 kingdoms divided from Eukarya domain?

A
  • Protista
  • Fungi
  • Plantae
  • Animalia
31
Q

What is the hierarchy made up of?

A

(Delicious) - Domain
(King) - Kingdom
(Prawn) - Phylum
(Curry) - Class
(Or) - Order
(Fat) - family
(Greasy) - Genus
(Sausage) - species

32
Q

Explain what is meant by phylogenetic group?

A

Grouped according to :
- evolutionary links
- history
- relationship
- common ancestor

Biology 👩🏽‍🔬 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions