PLANT FORM AND FUNCTION PART 1 Flashcards Preview

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Flashcards in PLANT FORM AND FUNCTION PART 1 Deck (34):
1

Covers and protects the plant body

Dermal tissue system

2

Makes up the bulk of the plant body; functions include photosynthesis and food storage

Ground tissue system

3

Distributes water and nutrients to a plant body

Vascular tissue system

4

- analogous to our skin
- protection

Dermal T.S.

5

- circulatory system
- conduct water, minerals and food

Vascular T.S.

6

- support tissue

Ground T.S.

7

Cells are pliable, thin walled, many sided
Cells remain alive at maturity

Parenchyma

8

Cells are elongated
walls (especially the corners) thickened with cellulose
make stems strong but pliable
cells are alive at maturity

Collenchyma

9

Cells have thick, lignified walls and are dead at maturity

Sclerenchyma

10

Two types of sclerenchyma

Two types:
Fibers: Long, tapered cells
Sclereids: Stubbier cell

11

Distributes water and dissolved mineral ions through tubes consisting of interconnected, perforated walls of tracheids and vessel members (cells that are dead at maturity)

xylem

12

Distributes sugars through a plant body; connect end-to-end at sieve plates, forming sieve tubes
Parenchyma cells (companion cells) load sugars into sieve tubes

phloem

13

- water conducting cells
- long and tapering
- secondary walls contain pits

tracheids

14

- transport water and
minerals more rapidly
- wider, shorter and less
tapered
- carry much water and
minerals
- contain perforation plates
a. Allow water to flow
b. Support pits
– allow lateral flow of water from vessel to vessel

vessel members

15

Outer tissue layer, usually a single layer of cells
Secretes a waxy cuticle that protects the plant and conserves water
Includes specialized cells, such as pairs on leaves that form stomata and trichomes

epidermis

16

specialized dermal cells

trichomes and stomata

17

specialized dermal cells
hair like extensions of the epidermis
protection
prevent excessive loss of water

trichomes

18

specialized dermal cells
pore/opening present
close to prevent
water loss
Guard cells

stomata

19

fundamental tissue system
consists of all the tissues other than the
vascular tissue and dermal tissue

ground tissue

20

3 types of cells in ground tissue

a. parenchyma – predominates
b. collenchyma
c. sclerenchyma

21

Seed leaf; contains food for the plant embryo

cotyledon

22

Multistranded, sheathed cords of primary xylem and phloem that thread lengthwise through the ground tissue system of stems, leaves, and roots

vascular bundle

23

sugar factories with many photosynthetic cells

leaves

24

One of a pair of cells that define a stoma across the lower epidermis of a leaf

guard cell

25

Zone of undifferentiated cells that divide rapidly

meristem

26

Growth from apical meristems in root and shoot tips; terminal buds at shoot tips are the main zone of primary growth

primary growth

27

In shoot and root tips, mass of undifferentiated cells just beneath a terminal bud’s surface, the division of which lengthens plant parts

apical meristem

28

Cylindrical array of primary xylem and phloem in a root; sheathed by pericycle (parenchyma) that forms lateral roots

vascular cylinder

29

w/ large main root
(taproot)
- develops from the
radicle
- produce branch
roots (lateral roots)
ex. dicots, gymnosperms

tap root system

30

- epiphytes
- absorb water from
air
ex. orchids

adventitious roots

31

vertical and short underground stem

corm

32

example of corm

gabi or taro

33

coiling stem support

tendrils

33

Forms protective covering on older stems and roots

Periderm

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