Lecture on Ch. 23 (incomplete, so supp w book)

Question 1

What are the three branches of the apical meristem?

Answer 1

the protoderm meristem
the procambion meristem
the ground meristem

Question 2

The dermis (tissue system) comes from what meristem?

Answer 2

the protoderm

Question 3

the Vascular system comes from what meristem?

Answer 3

the procambion

Question 4

The ground tissue system is from which meristem?

Answer 4

the ground meristem

Question 5

The xylem and the phloem are example tissues of what tissue system?

Answer 5

the vascular system

Question 6

What is primary growth?

Answer 6

growth that results from cell division in the primary meristem.

Question 7

What is secondary growth?

Answer 7

growth that results from cell division in the secondary meristem.

Question 8

What is the primary cell wall?

Answer 8

it is laid down at the exterior of all plant cells.

Question 9

what is the secondary cell wall?

Answer 9

it is interior to the primary cell wall in some cells.

Question 10

What is a tissue? (no, not for your nose.)

Answer 10

group of cells that perform a common function, performing tasks that individual cells are not capable of on their own.

Question 11

What is a tissue system?

Answer 11

connections of tissues between organs.

Question 12

What are the functions of the epidermis in plants?

Answer 12

covers the plant
keeps pathogens out
keeps moisture in 
storage
directs movement
defense (trichomes)
regulates gas exchange through guard cells which open and close stomatal pores.

Question 13

What is a stomata?

Answer 13

a core with two guard cells

Question 14

What are the functions of trichomes?

Answer 14

reduce water loss
reduce excess sunlight
reduce herbivory
have glands to attract or repel (ex: fragrance of flowers)