Competetion And Inheritance

Question 1

Define habitat

Answer 1

The environment in which an organism lives

Question 2

Define population

Answer 2

The total number of organisms of the same species living in the same geographical area

Question 3

Define biotic

Answer 3

Living

Question 4

Define ecosystem

Answer 4

Both the abiotic and biotic parts of an environment and how they interact

Question 5

Examples of things that compete

Answer 5

• plants compete with each other for light, space, water and mineral ions
• animals compete for food, water, mates

Question 6

List the biotic factors

Answer 6

• food
• arrival of a new predator
• competition between species
• new pathogens

Question 7

List abiotic factors

Answer 7

• light intensity
• temperature
  = if temp changes can cause distribution of species to change
• water
• ph and mineral content of soil
  = pH affects rate of decay and how fast minerals return to soil
• wind intensity
• carbon dioxide and oxygen
  = if co2 falls less photosynthesis
  = o2 needed for aerobic respiration

Question 8

Define structural adaptation

Answer 8

• adaptations of body shape or bone structure

Question 9

Define behavioural adaptations

Answer 9

• changes to behaviour or lifestyle
  -eg avoiding heat in daytime
  = creating underground burrows
  = keeps cool and away from predators

Question 10

Male chromosome

Answer 10

XY

Question 11

Female chromosome

Answer 11

XX