Plant Anatomy

Question 1

bud scales

Answer 1

modded leaves to protect dormant buds

Question 2

floral bracts

Answer 2

protect inflorescence during development

Question 3

sepals

Answer 3

warding off predators

Question 4

cotyledons

Answer 4

first leaves produced by germinating seeds

Question 5

cuticle

Answer 5

outermost layer that prevents water loss

Question 6

epidermis

Answer 6

layer of cells - provides inner tissue protection

Question 7

stoma

Answer 7

open aperture in epidermis surrounded by 2 hards

Question 8

palisade parenchyma

Answer 8

directly below the upper epidermis; hold 70-80% of leaf chloroplast

Question 9

spongy mesophyll

Answer 9

contains large air spaces; used for gas exhange

Question 10

veins

Answer 10

contains vascular tissue within the stem

Question 11

simple leaf

Answer 11

blade of leaf occurs within one unit

Question 12

tip

Answer 12

terminal point of leaf

Question 13

blade

Answer 13

flattened green, expanded of leaf

Question 14

margin

Answer 14

edge of leaf

Question 15

midrib

Answer 15

most prominent central vein of leaf

Question 16

lateral veins

Answer 16

secondary veins in leaf

Question 17

petiole

Answer 17

leaf stalk

Question 18

stipules

Answer 18

leaf-like appendages at the base of the petiole on some leaves

Question 19

compound leaf

Answer 19

blade of leaf divided into leaflets

Question 20

leaflet

Answer 20

second leaf of compound leaf

Question 21

rachis

Answer 21

extension of petiole that bears leaflets

Question 22

petiolule

Answer 22

leaflet stalk

Question 23

petiole

Answer 23

leaf stalk

Question 24

alternate arrangement

Answer 24

one leaf per node

Question 25

opposite arrangement

Answer 25

2 leaves (a pair) attached per node

Question 26

whorled arrangement

Answer 26

3 or more leaves per node

Question 27

pinnate

Answer 27

feather-like, net venation extended from the central midrib

Question 28

palmate

Answer 28

finger-like venation w/ several major veins diverging from the union of petiole and leaf blade

Question 29

parallel

Answer 29

main veins parallel to axis of leaf

Question 30

pinnately

Answer 30

leaflets coming from both sides of rachis

Question 31

palmately

Answer 31

leaflets arising from same location at top of petiole