Question 1

annual growth ring

Accepted Answer

result of secondary growth in a plant's lateral meristem.

Question 2

auxin

Accepted Answer

plant hormone that controls stem growth and regulates fruit development.

Question 3

chlorophyll

Accepted Answer

green-colored substance in leaves and stems; chlorophyll must be present for photosynthesis to take place.

Question 4

cultural practice

Accepted Answer

activity or treatment needed or used with a crop to gain the desired growth and product.

Question 5

fertilizer

Accepted Answer

any substance used to provide plant nutrients.

Question 6

fertilizer analysis

Accepted Answer

a list of the amounts of nutrients in a fertilizer.

Question 7

gibberellic acid

Accepted Answer

plant hormone that induces stem cell elongation and cell division.

Question 8

glucose

Accepted Answer

sugar made by photosynthesis in plants.

Question 9

glycolysis

Accepted Answer

process in which glucose is broken down to release energy.

Question 10

greenhouse

Accepted Answer

specially constructed enclosed building where plants can be cultured.

Question 11

heartwood

Accepted Answer

the innermost xylem of a tree.

Question 12

legume

Accepted Answer

plant that stores nitrogen from the air in nodules that grow on its roots.

Question 13

major elements

Accepted Answer

chemical nutrients that plants need in large amounts; macrominerals.

Question 14

mulch

Accepted Answer

a cover on soil to hold the moisture.

Question 15

nitrogen

Accepted Answer

the most important nutrient element in the growth of plants.

Question 16

no-till cropping

Accepted Answer

the practice of growing crops without plowing the soil.

Question 17

phosphorus

Accepted Answer

a nutrient that plants need to store and transfer energy and to grow.

Question 18

photosynthesis

Accepted Answer

the process plants use to make food.

Question 19

phytohormone

Accepted Answer

a naturally occurring hormone in plants that activates or regulates plant growth and development.

Question 20

potassium

Accepted Answer

a nutrient needed by plants for photosynthesis, moving sugar, and other functions.

Question 21

primary growth

Accepted Answer

the increase in the length of a plant; linear growth.

Question 22

sapwood

Accepted Answer

xylem in a tree that is two to four years old; sapwood is lighter in color than heartwood.

Question 23

secondary growth

Accepted Answer

increase in the diameter of stems and roots in plants.

Question 24

soil analysis

Accepted Answer

tests used to learn what nutrients are present in soil.

Question 25

tissue analysis

Accepted Answer

the testing of samples of plant tissue for nutrients.

Question 26

trace elements

Accepted Answer

chemical nutrients that are needed in small amounts for growth; micronutrients.

Question 27

wilting

Accepted Answer

plant condition in which the stems and leaves of a plant are no longer rigid and erect.

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