C3 FOOD CHAIN PART ONE

transcript

FROM FARM TO PLATEFROM FARM TO PLATE

Aims To illustrate the public and commercial

use of the term ‘food chain’ To review ideas on food and nutrition

from KS3

Define food chainDefine food chain??

Define/explain the following termsDefine/explain the following terms

1.1. ProducersProducers

2.2. Primary ConsumersPrimary Consumers

3.3. Secondary ConsumersSecondary Consumers

4.4. Predators Predators

www.sciencetutors.zoomshare.com

What is a FOOD CHAIN?What is a FOOD CHAIN? Complete the definition by using the keywords provided below:

Is a community of……… where each……. is ……in turn by…….. member

organisms

member

another

What is a FOOD CHAIN?What is a FOOD CHAIN?

Is a community of organisms where each member is eaten in turn by

another member

FOOD CHAINFOOD CHAIN

IS A FOOD RELATIONSHIP BETWEEN ORGANISMS

A group of organisms interrelated by the fact that each member of the group feeds upon on the one below it and is in turn eaten by

the organism above it in the chain.

What is a FOOD CHAIN?What is a FOOD CHAIN?

1. What is a food chain?

2. Make a food chain using any of the images

What is a FOOD WEB?What is a FOOD WEB?

Food GroupsFood Groups

GCSE JUNE 2009

Plants use nitrogen to make proteins. One of the other main elements in proteins is oxygen.

What are the other two main elements contained in proteins?

................... and............................[2 Marks]

ANSWERS

Elements in Protein are

Oxygen, Carbon and Hydrogen

FARMING FOR FOODFARMING FOR FOOD

AIMS• To compare intensive and organic farming • To identify costs and benefits of different

methods of farming

Home WorkHome Work

What is the difference between intensive and organic farming?

INTENSIVE FARMINGINTENSIVE FARMING

Intensive farming involves the usage of various kinds of chemical fertilizers,

pesticides and insecticides.

INTENSIVE FARMINGINTENSIVE FARMINGThis involves the use of chemical 1. Fertilizers, 2. Pesticides3. Insecticides

FERTILIZERSFERTILIZERS

Fertilizers (or fertilisers) are substances that supply plant nutrients or amend soil fertility.

Fertilizers are applied to promote plant growth.

Main Nutrient in FertilizersMain Nutrient in Fertilizers

The main nutrients present in fertilizer are nitrogen, phosphorus, and potassium

Why is Nitrogen important in Why is Nitrogen important in Soil? Soil?

Nitrogen in the soil is the most important element for plant development.

Nitrogen is a major part of chlorophyll and the green colour of plants.

GCSE JUNE 2009

INTENSIVE FARMINGINTENSIVE FARMING

Intensive farming or intensive agriculture is a type of

farming that involves the use of

• High inputs of capital,• Use of fertilizers, • Labour (employ people),• Use of labour-saving technologies such as

pesticides

• Large piece of farm land.

Advantages of Intensive Farming

Intensive farming methods achieve high yield or farming output because of the use

1.artificial fertilisers 2.herbicides - chemicals that kill

weeds 3.pesticides - chemicals that kill

ORGANIC FARMINGWhat is organic farming?

ORGANIC FARMINGCopy and complete the definition below

What is organic farming?

Organic farming is the form of ….. that relies on techniques such as crop rotation, green

manure, compost and biological pest control to maintain …… productivity

and control pests on a …….

Soil, Farm, Farming,

TO TO BUYBUY OR OR NOTNOT TO BUY? TO BUY?

Write down a list of questions that you might want to

ask when deciding whether or not to buy

organic produce.

TO BUY OR NOT TO BUY?TO BUY OR NOT TO BUY?

Write down a list of questions that you might want to ask when deciding whether or

not to buy organic produce.

Examples:

1. Is it safe to eat?

2. Where is…

3. Who …

4. How was …

C3 FOOD CHAIN PART ONE

Education