Chapter 1.4

Question 1

What is the scientific term for nourishing substances?

Answer 1

Nutrients

Question 2

What are substances composed of only one type of atom called?

Answer 2

Elements

Question 3

What is the term for the three most important mineral nutrients for plants (nitrogen, phosphorus, potassium)?

Answer 3

Primary plant food elements

Question 4

What is a group of chemicals containing the element phosphorus bonded to oxygen and other elements?

Answer 4

Phosphates

Question 5

What nutrient stimulates rapid growth of leaves and stems?

Answer 5

Nitrogen

Question 6

In what cycle is nitrogen moved from the air to the soil then back to the atmosphere again?

Answer 6

Nitrogen cycle

Question 7

What are substances containing atoms of two or more elements bonded together?

Answer 7

Compounds

Question 8

What are the substances that convert nitrogen in the soil into ammonia, nitrates, and other nitrogen compounds?

Answer 8

Nitrogen-fixing bacteria

Question 9

What is produced when dead plants and animals and animal waste products decompose?

Answer 9

Ammonia

Question 10

What converts nitrogen from nitrates into atmospheric nitrogen?

Answer 10

Denitrifying bacteria

Question 11

What element is essential for cell division and growth of plants because it makes the fruit firm properly?

Answer 11

Phosphorus

Question 12

What nutrient’s primary function is to contribute to the general health of the plant and improve disease resistance?

Answer 12

Potassium