Life on Earth

Question 1

What is an ecosystem?

Answer 1

A natural biological unit which is made up of living and non-living parts e.g. rain forest, arctic, desert.

Question 2

What is an Abiotic Factor

Answer 2

A factor that relates to a non-living eature of an ecosystem

Question 3

What are 2 examples of Abiotic Factors?

Answer 3

Light intensity & pH

Question 4

What are 4 examples of ecosystems?

Answer 4

Rainforest, Desert & Arctic

Question 5

What is a biotic factor?

Answer 5

A factor that relates to some aspects of living organisms in an ecosystem

Question 6

What are 3 examples of biotic factors?

Answer 6

Competition for food, disease & number of predators

Question 7

What does a food chain show?

Answer 7

How energy moves through an ecosystem.

Question 8

What is the general order of food chains?

Answer 8

It starts with a green plant followed by a series of animals, each of which obtains its energy from the previous organism.

Question 9

What is a food web?

Answer 9

A complex relationship composed of several inter-related food chains.

Question 10

What do the arrows in the food chain show?

Answer 10

The direction of energy flow.

Question 11

How should fox eats rabbit which eats grass be represented with arrows?

Answer 11

Grass –> Rabbit –> Fox

Question 12

Define Producer

Answer 12

Green plant that makes its food by photosynthesis
(Ex: Oak Tree)

Question 13

Define Primary Consumer

Answer 13

Herbivorous animal that eats the producer in a food chain
(Ex: Rabbit)

Question 14

Define Secondary Consumer

Answer 14

The animal that eats the primary consumer in a food chain
(Ex: Fox)

Question 15

Define Herbivore

Answer 15

Animal that feeds on plant materials only
(Ex: Sheep)

Question 16

Define Carnivore

Answer 16

Animal that feeds on flesh and other animal material
(Ex: Lion)

Question 17

Define Omnivore

Answer 17

Animal that eats both plant and animal material
(Ex: Pig)

Question 18

What can a quadrat do?

Answer 18

It can be used to sample a population of plants.

Question 19

What is Biodiversity?

Answer 19

The variety of life on earth

Question 20

As the human population increases …

Answer 20

the demand for food and shelter increases

Question 21

When did the Tasmanian Tiger go extinct?

Answer 21

1936

Question 22

When did the Great Auk go extinct?

Answer 22

1844

Question 23

When did the west African Black Rhinoceros go extinct?

Answer 23

2010s

Question 24

When did the Franklinia plant go extinct?

Answer 24

1803

Question 25

When did the Fissidens microstictus moss go extinct?

Answer 25

2019

Question 26

When did the Saint Helena Olive go extinct?

Answer 26

2003

Question 27

What are the 3 main nutrients plants require?

Answer 27

Nitrogen, Phosphorous, and Potassium

Question 28

If too much fertiliser is added to the land the rocess of _______________ can occure

Answer 28

eutrophocation

Question 29

Define Stimulus

Answer 29

Any object or event that causes a sensory or behavioural response in an organism

Question 30

Define Innate behaviours

Answer 30

Behaviours that do not have to be learned or practiced.

Question 31

Define Learned Behaviour

Answer 31

A change in response developed through experience.