Leaves

Question 1

a membranous outgrowth at the base of the blade of most grasses

Answer 1

Ligule

Question 2

What is the leaf trace?

Answer 2

leaf traces act like the plant’s veins that connect the vascular system of a plant to its leaves through the petiole

Question 3

Found at the leaf base, plays a crucial role in the shedding of leaves

Answer 3

Abscission zone

Question 4

Drop their leaves and become dormant during a part of the year. Store food to maintain metabolism while leafless

Answer 4

Deciduous plants

Question 5

_____ is a plant’s growth response to touch or contact

Answer 5

Thigmotropism

Question 6

a small leaf-like structure at the leaf base of some plants, serving various functions such as protection and support

Answer 6

Prophylls

Question 7

When a plant contains two forms of leaves that differ in size and shape

Answer 7

Leaf dimorphism

Question 8

large, compound leaves typically found in ferns and some other plants

Answer 8

Fronds

Question 9

Functions of Leaves

Answer 9

Absorbs light, protection against herbivores, and stores nutrients (starch)

Question 10

Draw the structure of a leaf

Answer 10

apex, margin, veins, midrib, base, lamina, petiole, axillary bud, stipule

Question 11

Describe the appearance of simple leaves

Answer 11

flat, undivided, with or without petiole

Question 12

Pinnately vs Palmately leaves

Answer 12

Pinnately: leaflets forms in odd or even pairs along the central stalk / Palmately: leaflets are attached from the same point

Question 13

Alternate name of central stalk

Answer 13

Rachis

Question 14

Types of pinnate leaves

Answer 14

Unipinnate, Bipinnate, Tripinnate,

Question 15

Three types of ground tissue

Answer 15

Parenchyma, Collenchyma, Sclerenchyma

Question 16

Economic importance of leaves

Answer 16

Nutrition, Flavor, Medicinal, Sustaining life

Question 17

The two sides of horizontally oriented leaves

Answer 17

Palisade Mesophyll (upper side) - light absorption / Spongy Mesophyll (lower side) - gas exchange

Question 18

Vertically Oriented Leaves

Answer 18

Found in monocots, lacks palisade and spongy layers - uniform mesophyll cells

Question 19

Venation in Dicot vs Monocot

Answer 19

Dicot: netted venation / Monocot: parallel venation

Question 20

sun leaves vs shade leaves

Answer 20

Sun leaves are adapted to high light intensity and are typically smaller, thicker, and have fewer stomata, while shade leaves are the opposite and has more chlorophyll

Question 21

Environmental factors affecting leaf variation

Answer 21

Sunlight and moisture

Question 22

Three types of plants according to moisture

Answer 22

Mesophytes (Moderate), Xerophytes (Little water), Hydrophytes (Aquatic)

Question 23

Peltate leaves

Answer 23

Shield-like leaves (petiole attached to middle of lamina

Question 24

Perfoliate leaves

Answer 24

Leaf is pierced by the stem

Question 25

Pulvinus leaf

Answer 25

swollen area at leaf base

Question 26

Stomatal Transpiration

Answer 26

It is the dominant transpiration that accounts for water loss in plants. It is also responsible for the release of water vapor through the stomata.

Question 27

Water vapor directly diffuses through the cuticle (cuticular pores) and out to the atmosphere

Answer 27

Cuticular transpiration