UNIT THREE: Pesticides and Biological control

Question 1

What is a pesticide?

Answer 1

A pesticide is a chemical used to remove and destroy pests of crop plants

Question 2

Why would you use a pesticide?

Answer 2

Reduces competition and will increase crop yeild.

Question 3

Types of pesticides?

Answer 3

Herbicides
Fungicides
Insecticide
Bactericides

Question 4

What are Herbicides for?

Answer 4

Used to kill plants (weeds).

Question 5

What are Fungicides for?

Answer 5

Used to kill fungal infections

Question 6

What are Insecticides for?

Answer 6

Used to kill insects

Question 7

Bactericides used for?

Answer 7

To kill bacterial infections

Question 8

What is Bio-accumulation?

Answer 8

The build up of pesticides in the bodies of organisms over time.

Question 9

What is Biological control?

Answer 9

Biological control is the alternative to pesticides, involves using one species to control the population of the pests.

Question 10

What is a risk of biological control?

Answer 10

Leads to invasive species if the organism escapes.

Question 11

What are GM crops?

Answer 11

Genetically modified crops have genes from other organisms to improve their characteristics.

eg, crops can have bacterial toxins in their stems to kill pests.