Leaf morphology

Question 1

leaf functions

Answer 1

photosynthesis
avoid lsoing water
prevent fungal infections
avoid being eaten
produce energy net gain for plant

Question 2

Energy net gain

Answer 2

leaf needs to produce more carbs than it takes to maintain the leaf

Question 3

Leaf blade

Answer 3

wide flat part of leaf
photosynthesis

Question 4

petiole

Answer 4

stalk of the leaf
attaches leaf to stem

Question 5

is the petiole a branch

Answer 5

no

Question 6

does the petiole help prevent shading

Answer 6

yes

Question 7

stipules

Answer 7

small leaf like flaps of tissue
can affect where energy is sent

Question 8

are stipules the same as bud scales

Answer 8

no

Question 9

do stipules help protect the young bud

Answer 9

yes

Question 10

ventral surface

Answer 10

top of leaf

Question 11

adaxial

Answer 11

ventral top

Question 12

how to tell the adaxial side of a leaf

Answer 12

if the midrib is sunken in

Question 13

dorsal surface

Answer 13

bottom of leaf

Question 14

abaxial

Answer 14

dorsal bottom

Question 15

what do the leaf veins contain

Answer 15

bundles of vasc tissue

Question 16

venation

Answer 16

how the veins are arranged in a blade

Question 17

pinnately reticulate venation

Answer 17

one major center vein

Question 18

palmately reticulate venation

Answer 18

like palms
branching major veins

Question 19

simple blade

Answer 19

many shapes, one part
oak?

Question 20

compound blade

Answer 20

subdivided into leaflets

Question 21

rachins

Answer 21

extnesions of the pediole
pinnately compound leaves have rachis

Basically at the bottom of the petiole

Question 22

rachins

Answer 22

extensions of the pedicle
pinnately compound leaves have rachis

Basically at the bottom of the petiole

Question 23

do palmately compound leaves have rachis

Answer 23

no bc those are petioles

Question 24

leaflet

Answer 24

small individual leaves
never have a bud on their axis

Question 25

are leaflets on every type of leaf

Answer 25

only with compound leaves

Question 26

petioule

Answer 26

stalk that attaches to the leaflets to the rachis

Question 27

pinnately compound

Answer 27

leaflets attached to rachis

Question 28

palmately compound

Answer 28

all leaflets are attached to the same orgin point

Question 29

do palamtely compound leaves have rachis

Answer 29

no

Question 30

phyllotaxy

Answer 30

the arrangement of leaves and axillary buds on a stem

Question 31

related plants = similar or different phylotaxy

Answer 31

similar

Question 32

whorled leaves

Answer 32

three or more ondes of leaves

Question 33

sheath

Answer 33

base of leaf wraps around stem

Question 34

are sheaths in mostly monocots or dicots

Answer 34

monocots

Question 35

ligule

Answer 35

narrow outgrowth of tissue at the junction of the blade and sheath

Question 36

whats the function of the ligule

Answer 36

no one knows yet

Question 37

auricle

Answer 37

projections from base of a monocot base angle

Question 38

-- be able to label monocot and dicot plant

Answer 38

-

Question 39

what is the venation in monocots

Answer 39

parallel

Question 40

are grasses simple or compound leaves

Answer 40

simple

Question 41

are palms simple or compound leaves

Answer 41

compound leaves

Question 42

leaf abscission zone

Answer 42

region of cells at the base of petiole1

Question 43

What happens at the leaf abscission zone

Answer 43

the cells secrete an enzyme to dissolve the middle lamella

Question 44

are the vasc bundles broken down by the enzyme that dissolves the middle lamella

Answer 44

no broken by wind and rain

Question 45

what is the process of the leaves falling in autunm

Answer 45

leaf absission