Secondary Growth

Question 1

”” has vascular bundles arranged in a cylinder. You can only have a vascular cambium if the vascular bundles are arranged in a cylinder.

Answer 1

Dicot

Question 2

in “” there is only primary tissue such as primary phloem (that is on the outside) and primary xylem (that is on the inside). Parenchyma is in between the bundles. Here there is only the procambium, parenchyma and vascular bundles.

Answer 2

early stage

Question 3

What does the Procambium become?

Answer 3

Fascicular cambium

Question 4

Where does the Fascicular cambium come from?

Answer 4

Vascular bundles

Question 5

In order for their to be a complete ring in a dicot stem, parenchyma cells start to divide and form the “”

Answer 5

interfascicular cambium

Question 6

When the fascicular cambium starts dividing secondary phloem will go to the outside and secondary xylem will go to the inside. (True/False)

Answer 6

True

Question 7

Where does the interfascicular cambium sit between?

Answer 7

vascular bundles

Question 8

the vascular cambium is “” growth

Answer 8

secondary

Question 9

the vascular cambium and cork cambium are “” meristems that are formed in stems and roots after the primary tissues have differentiated.

Answer 9

secondary

Question 10

secondary growth starts when the stem gets “”

Answer 10

wider

Question 11

apical meristem is “” growth

Answer 11

primary

Question 12

the “” that the vascular cambium makes gets really wide, but will get harder and harder to grow as time goes on where there will be smaller widths of tree rings.

Answer 12

first tree ring

Question 13

What are the 4 stages of xylem development?

Answer 13

1. cell division in the cambium 2. cell expansion 3. secondary cell wall deposition (cell wall strengthening) 4. cell death

Question 14

you will only see “” in xylem

Answer 14

lignin

Question 15

In xylem development, after the building up of cell walls the cell then dies where the “” main function will be for water transport

Answer 15

vessels

Question 16

(True/False) actively dividing cells have thinner cell walls

Answer 16

true

Question 17

all the bark that is produced outside of the “”

Answer 17

vascular cambium

Question 18

whats on the inside of the vascular cambium is “”

Answer 18

wood

Question 19

the outermost layer?

Answer 19

periderm

Question 20

which secondary transport tissue has the most cells?

Answer 20

secondary xylem

Question 21

what are xylem growth rings?

Answer 21

tree rings

Question 22

The “” is created by the cork cambium another secondary meristem.

Answer 22

periderm

Question 23

”” produces cells to the inside (phelloderm) and the outside (cork)

Answer 23

cork cambium

Question 24

what are the three functions of the periderm?

Answer 24

1. protection from water loss
2. protects the stem from pathogens
3. protection from fire

Question 25

”” makes cork to the outside

Answer 25

cork cambium

Question 26

is it typical for a meristem to have thin cell walls?

Answer 26

yes

Question 27

what do lenticels do?

Answer 27

gas exchange

Question 28

provides a pathway for the exchange of gases between the internal tissues and atmosphere through the bark, which is otherwise impermeable to gases.

Answer 28

Lenticels

Question 29

what is the outermost layer of a stem undergoing secondary growth?

Answer 29

periderm