predator-prey relationship

Question 1

predator

Answer 1

• kills

Question 2

prey

Answer 2

• the species the predator kills

Question 3

relationship

Answer 3

• regulates the abundance of prey
• increases biodiversity of communities, stops a species from becoming dominant
• keeping the prey population genetically fit
• provides food sources for scavengers

Question 4

examples 1

aphid - ladybird

Answer 4

• aphids are parasitic pests that suck the sap from plants
• ladybirds feed on aphids
• ladybird lays eggs among the aphid colony
• these eggs mature and hatch and feed on the aphids
• ladybird population decreases due to food supply
• aphid population increases because predator population decreases

Question 5

example 2

Shark - fish

Answer 5

• sharks are top of food chain in the ocean
• they eat old, slow and sick fish keeping the ocean healthy
• preventing spread of disease
• strengthening gene pool of fish
• stop fish population increasing too rapidly

Question 6

food web

Answer 6

• interconnected set of all of the food chain
• many different food webs
• predators and prey organised from most dominant to least