Plant Biology Flashcards Preview

Bio Lab > Plant Biology > Flashcards

Flashcards in Plant Biology Deck (25)
Loading flashcards...
1

How is pollen formed

Within pollen sacs in the anther

2

How does pollination occur

When pollen grains are carried away insects, birds, wind etc. to other plants of same species, some planets self-pollinate

3

Sclerenchyma features

thick cell walls, important for support (physical), dead cells, trees and plant grow upright

4

xylem features

transport H20 and nutrient up plant, dead lignified cells, provide structural suppose (trees)

5

phloem

transport sugar to top & bottom of plant, alive, non lignified

6

what causes an increase in diameter

later growth (2ndary growth)

7

describe plant transport

move h2o from soil up stems & leaves. roots take up h2o from leaves in phloem, root hairs increase SA in absorption

8

describe plant transport

move h2o from soil up stems & leaves. roots take up h2o from leaves in phloem, root hairs increase SA in absorption, nutrients taken up

9

e.g. of macronutrients

nitrogen, K, Na, phosphorous, Ca, Mg

10

e.g. of micronutrients

Fe, boron, Zn, maganese, copper

11

macro and micro nutrients are needed in low are high concentrations

macro high, micro low

12

anions

-ive charge, easy to take up

13

cations

+ively charged, binds to soil particles

14

water loss from stomata causes what

h20 deficit higher up tree. creates -ive tension in leaves. pulls h20 up xylem from roots. this is called transpirational pull

15

aniline blue features

phloem sleve areas= light blue, cal lose in sleeve plates (if present) = dark blue

16

acid phloroglucinol is only for

lignified tissues =dark red

17

toluidine blue features

lignified tissues (schlarchyma) = aquamarine, protenaceous tissues (parachyma & cytoplasm)= purple, polyaranaids & pectin = dark pink

18

if too much h20 lost in transpiration what happens

stomata wil c lose

19

name adaptations of plants in hot dry climate

size of leaf reduced, increase cuticle thickness, fleshy leaves store h20, stomata close in day, open night, stomata position deeper in leaves

20

name plant that is adapted to hot dry climate

xerophytes

21

describe sugar movement in phloem

sugars move from leaves to parts of plant

22

what are sinks

location where sugar is needed

23

what are sources

where sugar is produced (leaves)

24

sugars located in the

phloem sap (where syrup comes from)

25

describe sucrose movement via pressure flow

high conc. of sugar in leaves attract h20 into cells. cells build pressure causes sugar to move down plant. sucrose moves in & out cell via co-transport and ATP pump