Morphoanatomy of Leaves

Question 1

any of the principal appendages of a vascular plant stem

Answer 1

leaf

Question 2

usually borne laterally above ground and specialized for photosynthesis

Answer 2

leaf

Question 3

Leaves are collectively called

Answer 3

foliage

Question 4

Most leaves are usually green,
due to the presence of

Answer 4

chlorophyll

Question 5

flattened portion of a leaf

Answer 5

blade/lamina

Question 6

attaches the leaf to the stem

Answer 6

petiole/leaf stalk

Question 7

small leaf-like growths near the base of the petiole

Answer 7

stipule

Question 8

runs through the center of the blade and a continuation of the petiole which acts as the backbone

Answer 8

midrib

Question 9

functions as a passage tube for liquids between the petiole and veins

Answer 9

midrib

Question 10

acts as the framework of the leaf
and functions as a passage tube for liquids between the midrib and the blade

Answer 10

veins

Question 11

edge of a leaf

Answer 11

margin

Question 12

has only one leaf stalk, petiole

Answer 12

simple leaf

Question 13

the leaf blade is completely divided, forming leaflets.

Answer 13

compound leaf

Question 14

an extension of the petiole bearing
leaflets.

Answer 14

rachis

Question 15

If rachis is absent, it is called

Answer 15

palmately compound (digitate)

Question 16

if rachis is present, it is called

Answer 16

pinnately compound (pinnate)

Question 17

The arrangement of veins and veinlets in leaves (Lamina)

Answer 17

venation

Question 18

Main vein divided into various branches (veinlets) and form a net like structure.

Answer 18

reticulate

Question 19

type of venation can be found in dicots

Answer 19

reticulate

Question 20

all veins run parallel to each other and they do not form network

Answer 20

parallel

Question 21

type of venation found in monocots

Answer 21

parallel

Question 22

In this type of venation leaf have only one principal vein or midrib that give off many lateral veins which proceed toward margin and apex of lamina of the leaf and form
a network.

Answer 22

unicostate or pinnate in reticulate venation

Question 23

many principal veins arising from the tip of petiole and proceed towards tip of lamina

Answer 23

multicostate or palmate in reticulate venation

Question 24

types of multicostate venation in reticulate

Answer 24

multicostate divergent and convergent

Question 25

Many principal veins arising from the tip of petiole, diverge from the another toward the margin of leaf blade

Answer 25

multicostate divergent in reticulate venation

Question 26

Many principal veins arising from the tip of petiole. At the base of leaf they are closely arranged but diverge from one another in middle part and converge towards the apex of leaf.

Answer 26

multicostate convergent in reticulate venation

Question 27

only one principal vein that gives off many lateral veins, which proceed toward the margin of leaf blade in a parallel manner but they do not have veinlets.

Answer 27

unicostate or pinnate in parallel venation

Question 28

Having many principal veins arising from the tip of the petiole and proceeding upwards.

Answer 28

multicostate or palmate in parallel venation

Question 29

types of venation included in multicostate venation in parallel venation

Answer 29

multicostate divergent multicostate convergent furcate venation

Question 30

Many principal veins arising from the tip of petiole and diverge toward the margin of leaf. They donot divide into veinlets and do not form network.

Answer 30

multicostate divergent

Question 31

Many principal veins arising from the tip of petiole run in a curved manner in lamina and converge towards the apex of leaf blades.

Answer 31

multicostate convergent

Question 32

The veins branch dichotomously but the reticulum is not formed by the finer branches.

Answer 32

furcate venation

Question 33

arrangement of leaves on a stem

Answer 33

phyllotaxy

Question 34

Plants that have only one leaf per node

Answer 34

alternate or spiral

Question 35

the leaves alternate on each side of the stem in a flat plane

Answer 35

alternate

Question 36

the leaves are arrayed in a spiral along the stem.

Answer 36

spiral

Question 37

two leaves arise at the same point, with the leaves connecting opposite each other along the branch.

Answer 37

opposite

Question 38

Leaves that stands at right angle to next upper or lower pair

Answer 38

decussate

Question 39

Successive pairs of leaves stand directly over a pair in the same plane

Answer 39

superposed

Question 40

More than two leaves at each node

Answer 40

whorled

Question 41

occurrence of more than one type of leaves on the same plant.

Answer 41

heterophylly

Question 42

Leaves of different forms and shape occur at different period or places on the same plant

Answer 42

developmental heterophylly

Question 43

It is aquatic adaptation which is commonly found in rooted emergent hydrophytes.

Answer 43

environmental heterophylly

Question 44

submerged leaves differ from the floating and aerial leaves

Answer 44

environmental heterophylly

Question 45

Due to habit mature leaves differ in their shape and incissions

Answer 45

habitual heterophylly

Question 46

Leaves with a stalk or petiole

Answer 46

petiolate

Question 47

A lamina without a petiole

Answer 47

sessile leaf

Question 48

Small green appendages usually found at the base of the petiole

Answer 48

stipules

Question 49

If stipules are present in leaf it is called

Answer 49

stipulated leaf

Question 50

if stipule is absent then leaf is called

Answer 50

exstipulated

Question 51

a flattened leaf base (the sheath) partially or wholly clasps the stem

Answer 51

sheathing

Question 52

leaf appears to extend down the stem from the point of attachment, as if fused to the stem

Answer 52

decurrent

Question 53

a leaf is sessile and clasps the stem for most, but not all, of its circumference

Answer 53

amplexicaul

Question 54

the leaf is sessile with the base of the blade completely surrounding the stem

Answer 54

perfoliate

Question 55

Two opposite leaves fuse basally, such that the blade bases of the fusion product completely surrounds the stem.

Answer 55

connate-perfoliate

Question 56

boundary area extending along the edge of the leaf.

Answer 56

leaf margin

Question 57

shape of the leaf tip

Answer 57

leaf apex

Question 58

lowest part of a lamina that is near the petiole

Answer 58

leaf base

Question 59

an extension of a vein

Answer 59

apical process

Question 60

trichome cover

Answer 60

vestiture

Question 61

term meaning without trichomes at all.

Answer 61

glabrous

Question 62

leaves contain 3 tissue systems

Answer 62

dermal tissue (upper and lower epidermis) ground tissue (palisade and spongy mesophyll) vascular tissue (xylem and phloem)

Question 63

These cells appear to be involved in the rolling or folding inward of the leaf during drought. When water is plentiful, these cells are turgid (swollen with water) and the leaf is open.

Answer 63

bulliform cells

Question 64

forms a coil to help the plant in climbing or support of weak stem

Answer 64

tendrils

Question 65

reduced leaf that is usually modified for protection

Answer 65

bud scales

Question 66

modified leaves that surround a group of flowers to attract pollinators

Answer 66

bracts

Question 67

serve as protection to the plant and photosynthesis is carried out mainly by fleshy green stems

Answer 67

spines

Question 68

most succulents have leaves modified for storing water

Answer 68

storage leaves

Question 69

leaves of some succulents produce adventitious plantlets which fall off the leaf and take root in the soil.

Answer 69

reproductive leaves

Question 70

function as food storage organs during dormancy

Answer 70

bulb scales