The Plant Leaf

Question 1

refers to an organ of a vascular plant, and the food making factories of green plants and come in many different shapes and sizes

Answer 1

Leaf

Question 2

What are the three structures of a leaf

Answer 2

• leaf blade
• petiole
• stipules

Question 3

refers to the flattened part of a leaf

Answer 3

leaf blade

Question 4

refers to the leaf stalk

Answer 4

petiole

Question 5

refers to the leaf-like appendages at the base of the leaf

Answer 5

stipule

Question 6

What are the type of leaves based on leaf blade?

Answer 6

Simple and compound leaf

Question 7

made of a single leaf blade connected by a petiole to the stem

Answer 7

simple leaf

Question 8

blade is undivided, but may be toothed or lobed.

Answer 8

simple leaf

Question 9

a leaf made up of separate leaflets attached by a petiole to the stem like a palm leaf.

Answer 9

compound leaf

Question 10

two types of compound leaves

Answer 10

palmately and pinnately

Question 11

leaflets radiate from the end of a stem like a palm in this type of compound leaf

Answer 11

Palmately

Question 12

leaflets are arranged on either side of a central main stem in this type of compound leaf

Answer 12

pinnately

Question 13

The arrangement of veins in a leaf is called venation pattern. Veins bring nutrients and water to leaf cells.

Answer 13

Venation

Question 14

Types of venation

Answer 14

Parallel, pinnate, and palmate

Question 15

veins run parallel to the midrib from the base and meet at the tip

Answer 15

parallel-veined leaves

Question 16

-ladderlike
- there is a main vein called midrib, from which the other nerves derive, remembering a plume

Answer 16

Pinnate leaves

Question 17

-the nerves derive from main point such as the fingers do in the palm of the hand.
-several primary veins originate from a central point and extend to the margins

Answer 17

palmate leaves

Question 18

Types of compound leaves

Answer 18

• pinnately compound leaf
• ## palmately compound leaf

Question 19

Different type of leaf margins

Answer 19

• entire
• serrate
• crenate
• dentate

Question 20

margin is smooth around entire leaf edge

Answer 20

entire

Question 21

“teeth” point outward toward the apex of the leaf, looks like the teeth of a saw.

Answer 21

serrate

Question 22

margin has scalloped or rounded teeth.

Answer 22

crenate

Question 23

margin has square or rectangular teeth that point outwards

Answer 23

dentate

Question 24

lobes are similar to big teeth that extend more than about ¼ of the way to the midvein

Answer 24

lobed

Question 25

Leaf arrangement on stem is also known as

Answer 25

Phyllotaxy

Question 26

Types of leaf arrangement

Answer 26

• alternate
• opposite
• whorled

Question 27

leaves alternate along the stem, so only a single leaf is attached at each node.

Answer 27

alternate phyllotaxy

Question 28

leaves in pair along the stem, so that two leaves are attached at each node.

Answer 28

opposite

Question 29

This process takes place at the leaf

Answer 29

photosynthesis

Question 30

What is the chemical formula for photosynthesis?

Answer 30

6 CO2 + 6 H2O + (sunlight) = C6H12O6 + 6 O2

Question 31

eaves are offset by 90 degrees at adjacent node

Answer 31

decussate

Question 32

Functions of the leaf

Answer 32

1.Produce oxygen for animals for respiration
2.Remove carbon dioxide from the air
3.Produce food for the plant
4.Create shade
5.Create hiding places for wildlife
6.A source of food (for animals and people)
7.Reduce soil erosion by intercepting rain as it falls
8.Lower the air temperature as a by-product of transpiration

Question 33

Major Tissue Systems present in a leaf

Answer 33

Epidermis and Mesophyll

Question 34

covers the upper and lower surfaces of the leaf

Answer 34

epidermis

Question 35

inside the leaf that is rich in chloroplasts

Answer 35

mesophyll