LEAVES

Question 1

Leaf morphology can be characterized based on:

Answer 1

Type of leaves
Venation
Phyllotaxy
Leaf shape
Base
Margin
Apex

Question 2

Monocot Leaf ADAPTATIONS

Answer 2

Ligule
Auricle

Question 3

collar extension of the sheath curving around the stem; membranous, hairy or absent

Answer 3

Auricle

Question 4

appendage that surrounds the stem at the junction of the blade and sheath

Answer 4

Auricle

Question 5

angle of the petiole

Answer 5

axil

Question 6

the main axis of a compound structure. It can be the main stem of a compound leaf

Answer 6

rachis

Question 7

a leaf-like part of a compound leaf

Answer 7

leaflet or foliole

Question 8

dicot leaves that do not have petioles

Answer 8

sessile leaf

Question 9

petioles that are attached to the middle of the blade;

Answer 9

Peltate leaves

Question 10

sessile leaves that surround and are pierced by stems; e.g. include yellow-wort and thoroughwort

Answer 10

Perfoliate leaves

Question 11

arrangement of veins

Answer 11

Venation

Question 12

veins running parallel with one another (monocot)

Answer 12

Parallel venation

Question 13

Netted types

Answer 13

Pinnately veined leaves
Palmately veined leaves

Question 14

one primary vein (midvein) which is included within an enlarged midrib

Answer 14

Pinnately veined leaves

Question 15

several primary veins fan out from the base of the blade

Answer 15

Palmately veined leaves-

Question 16

Type of venation found in lower vascular plants. (E.g. Horsetail) One nerve is enough to sustain the blade.

Answer 16

Univernous

Question 17

3 primary veins.

Answer 17

Ternate-netted

Question 18

Always branching into two veins. (E.g. Gingko)

Answer 18

Dichotomous

Question 19

Arrangement of leaves along the axis of the stem.

Answer 19

Phyllotaxy

Question 20

Two leaves; in pairs. Oriented in one plane. In some species, can be oriented in different planes.

Answer 20

Oppositive leaves

Question 21

Opposite leaves attached at right angles to the adjacent pairs of leaves, in one node.

Answer 21

Decussate

Question 22

Three or more leaves in the node

Answer 22

Whorled leaves

Question 23

One leaf per node, Spiral arrangement.

Answer 23

Alternate leaves

Question 24

Leaves are all originating from the stem. Circular arrangement of leaves or of structures resembling leaves.

Answer 24

Rosette

Question 25

To facilitate gas exchange between the inner parts of leaves, stems, and fruits, plants have a series of openings known as

Answer 25

stomata

Question 26

stomates only on the upper epidermis

Answer 26

Floating leaves

Question 27

NO stomates

Answer 27

Submerged leaves

Question 28

shape of upper epidermis

Answer 28

(Elongated cells)

Question 29

shape of lower epidermis have guard cells.

Answer 29

(spherical, loosely arranged)

Question 30

Upper (Elongated cells) and lower (spherical, loosely arranged) epidermis both have guard cells in dicots

Answer 30

true

Question 31

Layers of mesophyll in dicots

Answer 31

Palisade parenchyma: Upper epidermis Spongy parenchyna: Lower epidermis

Question 32

Vascular tissues in leaves

Answer 32

veins

Question 33

Flexible courtesy of the collenchyma tissues

Answer 33

Midrib

Question 34

Mesophyll layer is not well differentiated into palisade and spongy layers

Answer 34

monocot leaves

Question 35

contains bulliform cells

Answer 35

monocot leaves

Question 36

Depending on the environment, some species develop their own adaptations

Answer 36

true

Question 37

Desert plants adaptations

Answer 37

thick and reduced leaves stomata opens only at night time thick waxy layer

Question 38

Modified Leaves

Answer 38

cotyledons tendrils colored bracts insect trapping spines storage leaves absorptive leaf reproductive leaf leaf hooks stipules expanded petiole flower pot leaves expanded petiole

Question 39

First leaves produced by a germinating seed. Often contain a stored food to help the seedling become established. Contains some food reserves for stock-up of the seedling. Once the plant is well-established, it will shed off the _____.

Answer 39

cotyledons

Question 40

Blade of leaves or leaflets are reduced in size; allows plant to cling to other objects.

Answer 40

tendrils

Question 41

Petal-like leaves to attract pollinators.

Answer 41

colored bracts

Question 42

Possessed by certain plants that live under nutrient-poor conditions.

Answer 42

insect trapping

Question 43

Protection against herbivory. As blades, they do not have any surface for transpiration.

Answer 43

spines

Question 44

having large vacuoles to retain water in halophytes

Answer 44

storage leaves

Question 45

A lot of aquatic plants do not have a developed root system. Hydrilla adapted for their leaves to have the role of absorption underwater.

Answer 45

absorptive leaf

Question 46

leaves that produces a lot of buds for asexual reproduction

Answer 46

reproductive leaf

Question 47

help the plant crawl upward

Answer 47

leaf hooks

Question 48

photosynthetic leafy outgrow They may range from quite leaf-like to small and inconspicuous structures. They are typically regarded as a component of a normal flowering plant's anatomy.

Answer 48

stipules

Question 49

petiole that maximizes photosynthesis

Answer 49

expanded petiole

Question 50

will catch all the falling leaves and falling plant debris from the canopy. Will also retain water used to decay with the decayed plant debris which will provide the plant the nutrients it needs to survive.

Answer 50

flower pot leaves