Leaf structure and arrangement

Question 1

Each leaf typically has a ______, _______, _______, and ________.

Answer 1

leaf blade (lamina), stipules, a midrib, and a margin.

Question 2

Some leaves have a _______, which attaches the leaf
to the stem.

Answer 2

Petioles

Question 3

leaves that do not have petioles are
directly attached to the plant stem and are called

Answer 3

Sessile leaves

Question 4

The arrangement of veins in a leaf is called the _______.

Answer 4

Venation pattern

Question 5

monocots have a pattern of __________.

Answer 5

parallel venation

Question 6

dicots have a pattern of __________.

Answer 6

reticulate venation

Question 7

The arrangement of leaves on a stem is known as _______.

Answer 7

phyllotaxy

Question 8

leaves can be classified as either ______, _______, _______, or ______.

Answer 8

alternate, spiral, opposite, or whorled.

Question 9

Plants with _______ and ______ leaf arrangements
have only one leaf per node.

Answer 9

alternate, spiral

Question 10

In a _______ leaf arrangement, two leaves connect
at a node.

Answer 10

opposite

Question 11

In a ________ arrangement, three or more
leaves connect at a node.

Answer 11

whorled

Question 12

stalk that extends from the stem to the
base of the leaf.

Answer 12

Petiole

Question 13

the flat part of a leaf; the blade, which is the widest part of the leaf.

Answer 13

Lamina

Question 14

small green appendage usually found at the base of the petiole.

Answer 14

Stipule

Question 15

Each leaf typically has a leaf blade called the _______.

Answer 15

Lamina

Question 16

It is the widest part of the leaf

Answer 16

Lamina

Question 17

Most leaves have a _______, which travels the length of the leaf
and branches to each side to produce ______ of vascular tissue.

Answer 17

midrib, veins

Question 18

The edge of the leaf is called the

Answer 18

margin

Question 19

A leaf may seem simple in appearance,
but it is a ____________ structure.

Answer 19

highly-efficient

Question 20

______, _______, _______, and a _______ are all essential structures of a leaf.

Answer 20

Petioles, stipules, veins, and a midrib

Question 21

Within each leaf, the ___________ forms veins.

Answer 21

vascular tissue

Question 22

the veins of the leaf have a net-like appearance

Answer 22

reticulate venation

Question 23

the veins run in straight lines across the length of the leaf without converging

Answer 23

parallel venation

Question 24

is an example of a plant with dichotomous venation.

Answer 24

Ginkgo biloba

Question 25

the rarest venation pattern where the veins branch off from one another like the branches of a tree (Ex. Ginkgo biloba)

Answer 25

dichotomous venation

Question 26

an example of a monocot that has leaves with parallel venation

Answer 26

Tulip (Tulipa)

Question 27

an example of a plant with a reticulate venation

Answer 27

Linden (Tilia cordata)

Question 28

The number and placement of a plant’s
leaves will vary depending on the ______, with each
species exhibiting a characteristic leaf arrangement.

Answer 28

species

Question 29

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

Answer 29

Alternate

Question 30

leaves are arranged in a spiral along the stem

Answer 30

Spiral

Question 31

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

Answer 31

Opposite