Unit 7- Chapters 20, 21, 22

Question 1

Plant

Answer 1

Multicellular eukaryotes
Produce their own food through photosynthesis
Adapted to life on land

Question 2

Cuticle

Answer 2

A waxy waterproof layer helps hold in moosture

Question 3

Stomata

Answer 3

Tiny holes in the cuticle

Question 4

Vascular system

Answer 4

A collection of specialized tissues that bring water and mineral nutrients up from the roots and disperse sugars down from the leaves

Question 5

Lignin

Answer 5

Hardens the cell walls of some vascular tissues

Question 6

Pollen grain

Answer 6

Two-celled structure that contains a cell that will divide to form sperm

Question 7

Seed

Answer 7

A storage device for a plant embryo

Question 8

Land plants evolved from…

Answer 8

…green algae

Question 9

Plants have adaptions that allow them…

Answer 9

…to live on land

Question 10

Plants evolve with…

Answer 10

…other organisms in their environment

Question 11

Mosses and their relatives are…

Answer 11

…seedless nonvascular plants

Question 12

Club mosses and ferns are…

Answer 12

…seedless vascular plants

Question 13

Seed plants include…

Answer 13

…cone-bearing plants and flowering plants

Question 14

Pollination

Answer 14

Occurs when pollen meets female reproductive parts of the same plant species

Question 15

Gymnosperm

Answer 15

A seed plant whose seeds are not enclosed in fruit

Question 16

Angiosperm

Answer 16

A seed plant that has seeds enclosed in some type of fruit

Question 17

Cone

Answer 17

The reproductive structure of most gymnosperms

Question 18

Flower

Answer 18

The reproductive structure of flowering plants

Question 19

Fruit

Answer 19

The mature ovary of a flower

Question 20

Flowering plants have unique…

Answer 20

…adaptations that allow them to dominate in today’s world

Question 21

Botanists classify flowering plants into…

Answer 21

…two groups based on seed type

Question 22

Flowering plants are also categorized by…

Answer 22

…stem type and lifespan

Question 23

Cotyledon

Answer 23

An embryonic leaf inside a seed

Question 24

Monocot

Answer 24

A flowering plant whose embryos have one seed leaf

Question 25

Dicot

Answer 25

Flowering plants whose embryos have two seed leaves

Question 26

Wood

Answer 26

a fibrous material made up pf dead cells that are part of the vascular system

Question 27

Annual

Answer 27

Mature from seeds Produce flowers And die in one year

Question 28

Biennial

Answer 28

Flowering plants that take two years to complete their life cycle

Question 29

Perennial

Answer 29

Any flowering plant that lives for more than two years

Question 30

Agriculture provides...

Answer 30

...stable food supplies for people in permanent settlements

Question 31

Plant products are...

Answer 31

...important economic resources

Question 32

Plant compounds are essential to...

Answer 32

...to modern medicine

Question 33

Botany

Answer 33

The study of plants

Question 34

Ethnobotany

Answer 34

Explores how people in different cultures use plants

Question 35

Pharmacology

Answer 35

The study of drugs and their effects on the body

Question 36

Alkaloids

Answer 36

Potent plant chemicals that contain | Nitrogen

Question 37

Parenchyma cell

Answer 37

Most common type of cell Stores starch oils and water Thin walls and large fluid filled vacuoles Photosynthesize

Question 38

Plant tissues are made of...

Answer 38

...three basic cell types

Question 39

Plant organs are made of...

Answer 39

...three tissue systems

Question 40

Collenchyma cell

Answer 40

Cell walls that vary in cell wall thickness | Provide flexible support

Question 41

Sclerenchyma cell

Answer 41

Strongest plant cell | Have a second cell wall made of lignin

Question 42

Dermal tissue

Answer 42

Covers the outside of a plant | Protects it

Question 43

Ground tissue

Answer 43

Makes up inside of plant Provides support Stores mayerials

Question 44

Vascular tissue

Answer 44

Transports water, mineral nutrients, and organic compounds to all parts of a plant

Question 45

Xylem

Answer 45

The vascular tissue that carriers water and dissolved mineral nutrients upward

Question 46

Phloem

Answer 46

The vascular tissue that carries the products of photosynthesis through the plant

Question 47

Water and dissolved minerals move...

Answer 47

...through xylem

Question 48

Phloem carriers...

Answer 48

...sugars from photosynthesis throughout the plant

Question 49

Cohesion-tension theory

Answer 49

Proposes that the physical properties of water allow the rise of water through a plant

Question 50

Transpiration

Answer 50

Loss of water vapor from plants

Question 51

Pressure-flow model

Answer 51

A theory that explains how food, or sap, moves through a plant

Question 52

Roots...

Answer 52

...anchor plants and absorb mineral nutrients from soil

Question 53

Stems...

Answer 53

...support plants, transport materials, and provide storage

Question 54

Vascular cylinder

Answer 54

Made up of xylem and phloem | In center of root

Question 55

Root hairs

Answer 55

Tiny projections of root cells

Question 56

Root cap

Answer 56

A small cone of cells that protects the growing part of the root as it pushes through the soil

Question 57

Meristem

Answer 57

Groups if cells that are the source of new cells

Question 58

Fibrous root

Answer 58

Make up fine branches in which most of the roots are the same size

Question 59

Taproot

Answer 59

Systems of roots that have a long, thick, vertical root with smaller branches

Question 60

Primary growth

Answer 60

Makes stems grow taller or roots grow longer

Question 61

Secondary growth

Answer 61

Adds to the width in the stems and roots of woody plants

Question 62

Most leaves have...

Answer 62

...share similar structures

Question 63

Most leaves are...

Answer 63

...specialized systems for photosynthesis

Question 64

Blade

Answer 64

Usually broad and flat | Collects sunlight for plant

Question 65

Petiole

Answer 65

Thin stalk that connects the blade to the stem

Question 66

Mesophyll

Answer 66

Parenchyma tissue between the two dermal layers of a leaf

Question 67

Guard cells

Answer 67

Two cells that surround each stoma | Can open and close by changing shape