Classification and Ecosystems Test

Question 1

Disease

Answer 1

Organism to cause body to not function in the correct manner

Question 2

Parasitism

Answer 2

Two organisms in relationship where one is benefits and other is harmed

Question 3

Commensalism

Answer 3

Two organisms in relationship where one is benefited and on is unaffected

Question 4

Predation

Answer 4

Form of symbiotic relationship between two organisms e.g seal and killer whale. Predator hunts prey for a source of food

Question 5

Mutualism

Answer 5

Two organisms in relationship where each Individual benefits e.g bee and flower

Question 6

Competition

Answer 6

(Interspecific)
(Intraspecific)
Two or more organisms fight over particular resources

Question 7

Decomposer

Answer 7

Breakdown dead organic matter into inorganic materials, which is recycled back into the soil
e.g fungi and bacteria

Question 8

Producers

Answer 8

Use light energy to produce chemical energy e.g glucose

Question 9

Herbivores

Answer 9

Heterotrophic

Question 10

Carnivore

Answer 10

Heterotrophic

Question 11

Food Chains show…

Answer 11

Flow of energy

Ultimate source of energy is the SUN

Question 12

Abiotic Factors

Answer 12

Non living things that effect an ecosystem

e.g temperature, water, pressure

Question 13

Viscosity

Answer 13

Ability of the organism to move around

Question 14

Pressure

Answer 14

Force exerted on a body by its medium

Question 15

Temperature

Answer 15

Results in active or denaturing

Question 16

Genetic Diversity

Answer 16

Range of different genes in the group and size of a gene pool

Question 17

Genetic Diversity Importance

Answer 17

Cause variation within a species and important in process of evolution

Question 18

Species Diversity

Answer 18

The variety of species in an area

Question 19

Species

Answer 19

A group of organisms that look alike, interbreed and produce fertile offspring
Within a species there is variation
The genes pool of the population contains a variety of alleles for different genes

Question 20

Ecosystem Biodiversity

Answer 20

Refers to the variety of ecosystems on Earth. Also considers the range of communities in each area.

Question 21

Ecosystem

Answer 21

The interaction of living things with their environment and with over living things in an area functioning together to make an ecological unit

Question 22

Levels of Classification

Answer 22

Kingdom 
Phylum
Class
Order
Family
Genus 
Species

Question 23

Binomial Naming System

Answer 23

1. Genus name comes first with capital letter

2. Species name follows with lower case

Question 24

Need For Classification

Answer 24

Shows trends in development
Show evolution fro simple to complex structures
Assists in identification of unknown organism

Question 25

Selection Criteria

Answer 25

- structure: physical characteristics are used to group organisms e.g limbs, backbone or fur - reproduction: ability to reproduce is fundamental to all life - genetic and biochemical characteristics: the sequence of molecules in DNA and proteins vary greatly. Similar sequence = closer related

Question 26

Why is biodiversity important?

Answer 26

Boosts ecosystem productivity and each species has a role to play

Question 26

Biotic Factors

Answer 26

Living things such as animals and plants that interact with each other.

Question 27

Phylogenetic Trees

Answer 27

First organism on left is the oldest | Closely related organisms share the same node

Question 28

Why are food chains short?

Answer 28

Energy is lost moving up trophic levels 10% of energy is passed on each trophic level Energy is lost during production of heat via Respiration Other processes include movement

Question 29

Chordata

Answer 29

``` Bilateral symmetry 2 openings Cells in three layers True body cavity Hollow dorsal nervous systems e.g fish, amphibians and reptiles ```

Question 30

Arthropoda

Answer 30

``` Two openings Cells in three layers True body cavity Hard exoskeleton Jointed limbs Segmented body e.g insects, spiders and crayfish ```

Question 31

Archea

Answer 31

``` Prokaryotes Unicellular No nucleus Cell wall Both ```

Question 32

Bacteria

Answer 32

``` Prokaryote Unicellular No nucleus Cell wall Both ```

Question 33

Plantae

Answer 33

``` Eukaryote Multicellular Nucleus Cell wall Autotroph ```

Question 34

Protista

Answer 34

``` Eukaryote Unicellular Nucleus Cell Wall Both ```

Question 35

Fungi

Answer 35

``` Eukaryote Multicellular Nucleus Cell wall Heterotroph ```

Question 36

Animalia

Answer 36

``` Eukaryote Multicellular Nucleus No cell wall Heterotroph ```