Roots

Question 1

Roots tend to make up _______ to _________ of the plant dry weight

Answer 1

1/3 1/2

Question 2

four functions of roots

Answer 2

absorption, anchorage, storage, and nitrogen fixation

Question 3

plants with poorly developing roots are more susceptible to….

Answer 3

lodging, falling over, diseased roots

Question 4

Corn has unique anchorage called

Answer 4

prop roots

Question 5

Adventitious roots form from _________ instead of root tissue

Answer 5

stem tissue

Question 6

Plants store food at the end of the growing season in the _________. In the spring food is used to form a new ______

Answer 6

Roots
Shoots

Question 7

Cutting alfalfa too late in the season causes

Answer 7

winterkill

Question 8

Nitrogen fixation occurs in the ________ family

Answer 8

legume

Question 9

Legumes form unique relationships with the bacteria __________

Answer 9

Rhizobium

Question 10

Rhizobium bacteria forms colonies in the roots of legumes called ________

Answer 10

Nodules

Question 11

Rhizobium bacteria process

Answer 11

takes nitrogen from the air (free nitrogen) and allows it to become plant available

Question 12

Innoculant

Answer 12

product containing rhizobium bacteria applied to legumes pre seeding

Question 13

Dicots form a major root called a _____ root

Answer 13

tap

Question 14

Where does the secondary root system develop from in monocots?

Answer 14

Crown

Question 15

Root cap functions

Answer 15

Protects the apical meristem (growth point), penetrates hard soils

Question 16

Cell enlargement area

Answer 16

behind the apical meristem

Question 17

Cell maturation area

Answer 17

behind cell enlargement area, specialized cells

Question 18

Functions of root hairs

Answer 18

increase surface area to increase contact with soil