WJEC GCSE Biology Unit 2

Question 1

What are the two major groups of living organisms?

Answer 1

Plants and Animals
Plants - Flowering and Non-Flowering
Animals - Vertebrates and Invertebrates

Question 2

What is the full order of the classification groups?

Answer 2

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

Question 3

What are the 2 Domain groups?

Answer 3

Largest group, Eukarya (which contains 4 of the 5 kingdoms), and Bacteria and Archaea

Question 4

What are the names of the 5 Kingdoms?

Answer 4

Animals
Plants
Fungi
Single celled organisms
Bacteria

Question 5

What 2 classification groups are the scientific names derived from?

Answer 5

Genus and Species

Question 6

What are 2 advantages of scientific names?

Answer 6

• Universal language, everyone understands it
• Prevents mix ups, every animal has a unique scientific name

Question 7

What are the 2 types of adaptation?

Answer 7

• Morphological
• Behavioural

Question 8

Define morphological adaptions

Answer 8

Adaptions that change physical things to better suit the environment like Fennec foxes who live in hot climates that have large ears to radiate heat away from their bodies.

Question 9

Define behavioural adaptions

Answer 9

Adaptions that change behaviours to better suit the environment like how the Fennec fox is mostly nocturnal (awake at night) and burrows under the sand to avoid the heat of the day in the desert.

Question 10

What do animals compete for?

Answer 10

• Food
• Territory
• Mates

Question 11

What do plants compete for?

Answer 11

• Light
• Water
• Minerals

Question 12

What is Interspecific competition?

Answer 12

Interspecific competition is competition between different species.

Question 13

What is Intraspecific competition?

Answer 13

Intraspecific competition is competition between members of the same
species.

Question 14

Other than competition what affects a populations size?

Answer 14

• Predation
• Pollution
• Disease

Question 15

What is biodiversity a measure of?

Answer 15

• The variety of different species
• The numbers of each of those species in a particular area.

Question 16

Why is biodiversity important?

Answer 16

It is important as it provides:
- food and potential foods
- industrial materials
- new medicines
- and enhances human well-being.

Question 17

How can biodiversity be preserved?

Answer 17

Biodiversity and endangered species can be conserved and protected by:
- Convention on International
Trade in Endangered Species
- Sites of Special Scientific
Interest
- captive breeding programmes
- national parks
- seed/ sperm banks
- local biodiversity action plans.

Question 18

How do you measure biodiversity?

Answer 18

To measure the biodiversity of plants in
an area or to investigate the different
distribution of plants we can use a
quadrat.
It is important to take a random
sample of an area to avoid collecting
biased data.
A larger sample will give a valid
estimate of the number of plants in the
area.

Question 19

What is the name of the method of