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Flashcards in Classification and Biodiversity Deck (23)
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1

What are the 5 kingdoms?

1. Prokaryotae
2.Protoctista
3. Fungi
4. Plantae
5. Animalia

2

What is an autotroph?

An organism that can make food from inorganic substances

3

What is a Heteroph?

Organisms that use organic food sources

4

What are the 3 Domains?

1. Archaea
2. Bacteria
3. Eukarya

5

Define Classification

The organisation of living organisms into groups according to their shared similarities and differences

6

Define Taxonomy

The study of the principles behind classification

7

Why do we study?

To make the study of living organisms more manageable, to support ideas of evolution, to allow scientists to communicate with each other.

8

What is the Phylogenetic Hierachy?

The modern classification system

9

What is a Hierachy?

Where a large group of items (in this case organisms) is split into smaller and smaller groups.

10

What is meant by Phylogenetic?

The organisms are grouped to reflect their evolutionary relatedness.

11

What is the 7 taxa groups in order (largest to smallest)?

1. Kingdom
2.Phylum
3.Class
4.Order
5.Family
6.Genus
7.Species

12

Define Species

A group of organisms that can interbreed under natural conditions to produce natural offsrping

13

What is the latin naming system and how does it work?

Binomials, made of Genus-species.

14

Why are virus' not included in the 5 kingdom classification system?

They do not carry out life processes on their own

15

What do taxonomists use to group organisms?

Similarities and Differences

16

Define Morphology

The structure of organisms (outward appearance and internal structure)

17

Define Biochemical methods

Molecules within organisms; DNA and protein sequences, rRNA structure, cell wall biochemistry etc.

18

Define Homologous structures

Body parts that are structurally similar even though they are used for different functions

19

Define Analagous structures

Body parts that are structurally different but used for similar functions

20

What are biochemical methods used for?

Comparing certain molecules across different species to see how similar or different their structures are.

21

What are 4 causes of decreasing biodiversity?

1. Habitat destruction
2.Over fishing
3.Misuse of land
4.Pollution

22

What is Simpson's index equation?

1 - [Σn(n-1)/ N(N-1) ]

23

What does low levels of biodiversity suggest?

1. Dominance by few/ one species
2.A change in one species can effect a whole habitat
3. Unstable habitat