Grade 7 Unit 5 Plants for Food and Fibre

Outline:

Topic 1 – People and Plants

Topic 2 – Structure and Adaptations

Topic 3 – Plant Reproduction and Breeding

Topic 4 – Meeting the Need for Food and Fibre

Topic 5 – Sustaining the Soil

Topic 6 – Pests and Pest Control

Objectives: Students will:

1. Investigate plant uses; and identify links among needs, technologies, products

and impacts.

2. Investigate life processes and structures of plants, and interpret related

characteristics and needs of plants in a local environment.

3. Analyze plant environments, and identify impacts of specific factors and

controls.

4. Identify and interpret relationships among human needs, technologies,

environments, and the culture and use of living things as sources of food and

fibre.

Topic 1 - People and Plants

How are plants used??

Used in the Environment

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Used for Food

list 9 main edible plants

Match the plant to their final

products on page 93

Used for Fibre

Cotton Hemp Flax

Advantages of this fibre Advantages of this fibre Advantages of this fibre

Uses of this fibre Uses of this fibre Uses of this fibre

How are plants used?? cont…

Used for Fuel

Describe 4 fuels we use

directly or indirectly from

plants

Used for Medicine

How many and

what types of drugs are

made from plants?

4 Plant Pain

medications - where do

they come from and what

are they used for?

- Aspirin

- Codeine

- Morphine

- Quinine

Used in Transportation and

Construction

List the four ways that humans make

use of trees or tree products in the

areas of construction and

transportation

Complete Topic 1 Review

page 103 # 7 & 8

2 – Structure and Adaptations

Functions ROOTS How does

1. water move into the

Types roots?

2. Taproot:

Root Hairs:

3. Fibrous Root:

Root Crop:

STEM

Function

1.

2.

3.

Components of a tree stem

Types

LEAVES

Photosynthesis:

__________+___________+_________ _________+___________+_______

Define: Respiration: Stomata:

Transpiration: Guard Cell:

Topic 3 - Plant Reproduction and Breeding

Topic Review and Wrap UP questions (to be used as study material for your quiz) Topic Review page 130: # 2, 4, 5 Topics 1-3 Wrap-up page 131 # 1, 3, 7, 9.

Definition Definition of genes

GENETIC MODIFICATION (ENGINEERING)

How is it done? Example

Definition Purpose

SELECTIVE

Example #1 BREEDING Example #2

Sexual Reproduction Plant Reproduction

Vegetative/Asexual Reproduction Cones (definition and purpose) Flowers

Pollination

1.

2. 3. Seed

Germination

Layering

Grafting

Cuttings

Seed Dispersal 1. 2. 3. 4. 5. 6.

Label parts and functions of the flower:

Label the parts and functions of the seed

**Extra Note: POLLINATION -> FERTILIZATION -> SEED -> GERMINATION -> NEW PLANT

Topic 4 – Meeting the Need for Food and Fibre

What does it mean when scientists say that they are concerned with then

sustainability of Alberta’s agricultural industry?

Fact: Of the ____ million hectare land area of Alberta, over ____ million is

now managed as farmland.

Answer the “Pause and Reflect” (on page 133) HERE.

FIELD CROPS IN ALBERTA

Use the information on p. 134-5 to complete the chart with point form notes.

CHARACTERISTICS

CROPS USES SOIL/

CLIMATE

VALUE IN

ALBERTA DRAWING OF

CROP

Wheat

Oats

Canola

Barley

Legumes

Potatoes

Alfalfa

Spec. Crops

What is silage and why is it so important to Alberta farmers and dairymen?

Complete the Math Connect on page 137

Yield per Hectare of Alberta Crops

Crop

To

nn

es Y

ield

ed

per

Hecta

re

What three conditions affect yield?

What type of warm-season crops is grown “under glass”?

Read through pages 140-141 and complete the following concept map.

FARMING PRACTICES

Trees Used for Forest Products

Species Areas of growth Type of wood Uses Soil/ Climate

suited to

Drawing of leaves/

needles

Lodgepole Pine

White Spruce

Black Spruce

Aspen

White Birch

Tamarack (Larch)

Monocultures

Fertilization

Irrigation

Cultivation

What province contributes the most to Canada’s lumber shipments?

What forest product do we use almost half of our forest tress for?

What do foresters do before they begin cutting trees in an area?

What are the steps taken during the process of reforestation?

Define soil erosion. Why is it so serious a problem worldwide?

Do Topic 4 Review questions # 1, 3 a & b

Topic 5 – Sustaining the Soil

SOIL

Functions of Soil

1.

2.

3.

5 Factors in Soil Development

1.

2.

3.

4.

5.

Role of Decomposers

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4 Types of Decomposers & Their Job

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Necessary Nutrients in Soil

Nitrogen:

Potassium:

Phosphorus:

SALINIZATION Soil Challenges and Solutions LOSS OF ORGANIC

MATTER AND EROSION

SOLUTIONS (P. 158-162)

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Topic 6 – Pests and Pest Control

PESTS

Important plant pests

Dandelion Example: What makes it a successful pest?

1. 2. 3. 4. 5.

Canola Pests: What general strategies

make them successful?

INTRODUCED SPECIES

How can we control pests?

1. 2. 3. 4. 5.

1. Bioaccumulation Problems with Pest Control Practices 4. Resistant Species

2. Soil Residue 3. Non-Target Species

ORGANIC FOOD

How are pests controlled?