Quiz 2, Chapter 1, pp. 12-15

Question 1

The primary plant food element that stimulates the growth of stems and leaves is

Answer 1

nitrogen

Question 2

Which of the following is NOT a primary plant food element?

Answer 2

calcium

Question 3

A substance composed of only one type of atom is an

Answer 3

element

Question 4

The word that means “a nourishing substance” is

Answer 4

nutrient

Question 5

Nitrogen-fixing bacteria convert atmospheric nitrogen into nitrogen compounds, including nitrates and

Answer 5

ammonia

Question 6

general term for a substance containing 2 or more elements bonded together

Answer 6

compound

Question 7

main function is to contribute to the general health of a plant and improve disease resistance

Answer 7

potassium

Question 8

group of chemicals containing phosphorus bonded to oxygen and other elements

Answer 8

phosphates

Question 9

makes fruits “firm up” properly

Answer 9

phosphorus

Question 10

system that moves nitrogen from the atmosphere to the soil and back

Answer 10

nitrogen cycle