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Organisms that make food (pro....) Organisms that hunts

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1 Organisms that make food (pro....) Organisms that hunts
c e R s p r e d a t o s f o c h a i n c a r n i v o e s c n s m e s Organisms that make food (pro....) Organisms that hunts e.g. lion, tigers, polar bears (pre.....) When organisms are linked up in one direction of taking food (f… c…) Organisms that eat organisms that make food (carn....) Organisms that cannot make its own food (con....) When organisms are linked up in many directions of taking food Organisms that only eats producers (herb...) Organisms being hunted e.g. dears, rabbits (pre.....) f o d w e b h e b i v r e p r e y

2 Boardworks GCSE Science: Biology Health and Diet
Feeding off each other or not Saturday, 22 April 2017 Boardworks GCSE Science: Biology Health and Diet Behaviour Focus: take a step back and the view is wider – we only need work to be done Copy and leave space to write answers/ responses to the learning objectives The Big Question: How do organisms feed themselves? L.O.1: What are the types of organisms in feeding? L.O.2: How are they related to each other? L.O.3: What is the importance of feeding off more than one source?

3 Boardworks KS3 Science 2008 Feeding Relationships
Feeding types Boardworks KS3 Science 2008 Feeding Relationships Different types of organism can be grouped in several ways. One grouping system is based on how organisms obtain their food. Some organisms produce their own food. They are called producers. Plants produce their own food using light energy from the Sun. Some types of bacteria can also make their own food by using light or chemical reactions. Other organisms cannot make their own food. They are called consumers.

4 Boardworks KS3 Science 2008 Feeding Relationships
Producer or consumer? Boardworks KS3 Science 2008 Feeding Relationships

5 Boardworks KS3 Science 2008 Feeding Relationships
Consumers Boardworks KS3 Science 2008 Feeding Relationships Consumers can be grouped into different types: Write one short sentence describing herbivores These consumers eat producers. Herbivores include some plants and types of bacteria. Write one short sentence describing carnivores These consumers eat other consumers. Write one short sentence describing omnivores These consumers eat other consumers and producers. Omnivores eat animals and plants. Most humans are omnivores.

6 Feeding types – Copy the key words and match the explanation
Boardworks KS3 Science 2008 Feeding Relationships

7 Food chains – who eats what?
Boardworks KS3 Science 2008 Feeding Relationships Can you see a food chain in this habitat? Feeding Relationship Worksheet1 accompanies this section.

8 Boardworks KS3 Science 2008 Feeding Relationships
Food chains Boardworks KS3 Science 2008 Feeding Relationships A food chain is a sequence that shows how each individual feeds on the organism below it in the chain. Each arrow means ‘eaten by’. leaf caterpillar bird fox What does this food chain show? A leaf is eaten by a caterpillar, which is then eaten by a bird, which is then eaten by a fox. Energy is transferred from one organism to another in the direction of the arrow.

9 Predator-prey relationships
Boardworks KS3 Science 2008 Feeding Relationships Animals that are high up in food chains, such as the fox, tend to be hunters that are skilled at locating and killing their food. These hunters are called predators. The animals on which the predator feeds are called their prey. Prey animals tend to be well adapted to avoid the predator. Photo credit: Jupiterimages Corporation Common prey adaptations include camouflage or the ability to produce poisonous toxins.

10 Boardworks KS3 Science 2008 Feeding Relationships
Name that feeding type Boardworks KS3 Science 2008 Feeding Relationships

11 Primary, secondary or tertiary?
Boardworks KS3 Science 2008 Feeding Relationships

12 What are pyramids of numbers?
Boardworks KS3 Science 2008 Feeding Relationships Pyramids of numbers are a numerical way of representing food chains. They record the number of organisms at each level in the food chain. What are the problems of representing food chains in pyramids of numbers? Pyramids of numbers only give an accurate impression of the flow of energy in a food chain if the organisms are of similar size. Measuring the biomass (living material that makes up all organisms) at each level in the food chain can give a more accurate picture.

13 Food chain populations
Boardworks KS3 Science 2008 Feeding Relationships

14 Boardworks KS3 Science 2008 Feeding Relationships
Ranking consumers Boardworks KS3 Science 2008 Feeding Relationships Draw the food chain and then complete the sentences seaweed limpet crab human producer primary consumer secondary consumer tertiary consumer Producers – make their own food. Primary consumers – eat producers. Secondary consumers – eat primary consumers. Tertiary consumers – eat secondary consumers.

15 Boardworks GCSE Science: Biology Health and Diet
Waste and Disruption in the Web Saturday, 22 April 2017 Boardworks GCSE Science: Biology Health and Diet Behaviour Focus: FOCUS! You need nothing else if you are not there yet. Copy and leave space to write answers/ responses to the learning objectives The Big Question: What if the food web is disrupted? L.O.1: What are waste and disruptions to a food web? L.O.2: How would they affect the web? L.O.3: Why would we want to take care of our environment?

16 An Antarctic food chain
Boardworks KS3 Science 2008 Feeding Relationships

17 Boardworks KS3 Science 2008 Feeding Relationships
Build a food web Boardworks KS3 Science 2008 Feeding Relationships

18 Boardworks KS3 Science 2008 Feeding Relationships
Food webs Boardworks KS3 Science 2008 Feeding Relationships owl bluetit chiffchaff stoat spider moth vole ladybird plant aphid

19 Boardworks KS3 Science 2008 Feeding Relationships
Write the question and 3 bullet points answering the question: What if we change the numbers of the levels of organism in the food web? Boardworks KS3 Science 2008 Feeding Relationships Teacher notes This activity is designed to show students that a decline in one species can have a significant impact on others. These values and outcomes are completely speculative.

20 Boardworks KS3 Science 2008 Feeding Relationships
Food for energy Boardworks KS3 Science 2008 Feeding Relationships Why do organisms need to feed? Most animals get their energy from food. If the producers at the bottom of the food chain are small organisms, then the consumers at the top of chain need to eat many of them to gain enough energy. Much of the energy that prey generate is lost on a daily basis through heat, growth and waste. Very little energy is actually transferred to the predator.

21 Food chains and pyramids
Boardworks KS3 Science 2008 Feeding Relationships What can a pyramid of numbers show about energy transfer? Teacher notes This illustration contains several discussion points relating to food chains and pyramids, including: Oak tree containing caterpillars, shrews and an owl: This represents a food chain with an oak tree as the primary producer, caterpillars as primary consumers, shrews as secondary consumers and an owl as the tertiary consumer. The balancing act illustrates the dependence of organisms on a food supply. Although the amount of biomass decreases at each stage of the food chain, representing this chain as a pyramid of numbers would result in a pyramid with a base narrower than its middle, because this system is supported by one oak tree. Ring master balancing on cows: This represents a food chain with cereal crops as the primary producer, cows as the primary consumer and humans as the secondary consumer. Students could be asked to consider if it would be more energy efficient for the human to eat the cereal crops directly. Setting sun: The Sun provides energy for photosynthesis, the process used by plants to make food. Antelope and lions: The antelope are grazing on grass. They are being closely watched by a hungry-looking pride of lions. This represents a food chain with grass as the primary producer, antelope as the primary consumer and lions as the secondary consumer.

22 TRUE OR FALSE Write 1 to 8 and TRUE or FALSE for each statements below
Consumers eats producers. Producers produce food. Number of organism is not a good representation (showing) how much energy there is in each level of the food pyramid. The lower levels of the pyramid can be smaller than the higher level in good ecosystems. Energy is wasted in each level so the higher levels are always smaller A lot of people on earth is helpful to the ecosystem. If the higher levels of the pyramid is getting too big, the animals in the lower levels can extinct. If the higher levels if the pyramid is getting too big, the animals in the higher levels can extinct. TRUE TRUE FALSE TRUE FALSE TRUE TRUE

23 Behaviour Focus: Do more than 100% as there is always energy lost.
Energy Lost and Biomass Saturday, 22 April 2017 Boardworks GCSE Science: Biology Health and Diet Behaviour Focus: Do more than 100% as there is always energy lost. Copy and leave space to write answers/ responses to the learning objectives The Big Question: Why do we always have some waste? L.O.1: What is biomass? L.O.2: How is energy lost in each level of food chain? L.O.3: How can we keep energy lost less?

24 Boardworks KS3 Science 2008 Feeding Relationships
Numbers or biomass? Boardworks KS3 Science 2008 Feeding Relationships Teacher notes This activity provides illustrated examples of pyramids of biomass and pyramids of numbers. It could be used to allow students to draw comparisons between these two methods of representing food chains.

25 Understanding pyramids of numbers
Boardworks KS3 Science 2008 Feeding Relationships In a pyramid of numbers, the length of each bar represents the number of organisms at each level in the food chain. As a single tree can support many organisms, this food chain produces an unbalanced pyramid.

26 Understanding pyramids of biomass
Boardworks KS3 Science 2008 Feeding Relationships In a pyramid of biomass, the length of each bar represents the biomass at each level of the food chain. Feeding Relationships Worksheet 2 accompanies this slide. At each level, the amount of biomass and energy available is reduced, giving a pyramid shape.

27 Boardworks KS3 Science 2008 Feeding Relationships
Death benefits? Boardworks KS3 Science 2008 Feeding Relationships When animals and plants die, they are decomposed by microbes. In this way, the nutrients that were stored in animals and plants are eventually returned to the soil. The nutrients fertilize the soil, helping producers, such as plants, to grow better. Photo credit: Jupiterimages Corporation As the number of producers increases, how will this affect the populations of organisms higher up in the food chain?

28 How could change affect ecosystems?
Boardworks KS3 Science 2008 Ecosystems Teacher notes Other unique habitats may be lost due to the sea level rising. For example 32% of beaches used as nesting sites for turtles could be lost with a 50 cm rise. Wetland sites may also be under threat. See the ‘Feeding Relationships’ presentation for more information about how a change in a population of one species can have an impact on the rest of the food chain.

29 The effect of change on polar bears
Boardworks KS3 Science 2008 Ecosystems Teachers notes In stage one of the animation the students could be asked to give reasons why each of the polar bears adaptations are useful.

30 Boardworks KS3 Science 2008 Feeding Relationships
Multiple-choice quiz Boardworks KS3 Science 2008 Feeding Relationships

31 Food chains and pyramids Copy and complete the sentences
Boardworks KS3 Science 2008 Feeding Relationships Teacher notes This completing sentences activity provides the opportunity for some informal assessment of students’ understanding of food chains and pyramids.

32 Behaviour Focus: Think twice, before taking any actions.
The Ecosystem - Adaptation Saturday, 22 April 2017 Boardworks GCSE Science: Biology Health and Diet Behaviour Focus: Think twice, before taking any actions. Copy and leave space to write answers/ responses to the learning objectives The Big Question: How do food web, habitats and adaptation help us survive? L.O.1: What are habitat, niche and community? L.O.2: How do living things adapt to the environment? L.O.3: Explain how we can make life easier for living things around us?

33 Boardworks KS3 Science 2008 Ecosystems
What is a habitat? Boardworks KS3 Science 2008 Ecosystems What makes a habitat? A habitat has all of the things that an organism needs to survive, such as the right amounts of oxygen, water, light and shelter. Photo credit: Jupiterimages Corporation How would you describe your habitat?

34 Different types of habitats
Boardworks KS3 Science 2008 Ecosystems How are these habitats similar and how are they different? Photo credit: Jupiterimages Corporation

35 Boardworks KS3 Science 2008 Ecosystems
Which land habitat? Boardworks KS3 Science 2008 Ecosystems Photo credit: Jupiterimages Corporation

36 Boardworks KS3 Science 2008 Ecosystems
Which water habitat? Boardworks KS3 Science 2008 Ecosystems Photo credit: Jupiterimages Corporation

37 Bees and birds can both live within the canopy of a tree because…
When plants and animals found in a particular habitat. An ecosystem is… A community is… A habitat is… A niche is… Bees and birds can both live within the canopy of a tree because… Living organisms in a particular area, and the habitat they live in A place where a plant or animal lives A particular place or role that an organism has in an ecosystem they can share the habitat and do not compete for food with each other – co-exist. (e.g. bees feed from flowers; birds eat worms) Answer Qu3 on your books

38 Niche of some Farm Organisms
Farmers Controller; overseer; make sure everything works efficiently Shepherd’s Dogs Control sheep herds; guard sheep from foxes Sheep Eat grass; produce wool; produce milk; be butchered as meat Cows Eat grass; provide skin as leather and flesh as meat; produce milk Cats Catch mice; Purrrrrrrrrr; Provide happiness for farmers Veges and Grass Absorb nutrients, CO2 and sunlight to produce food and oxygen Fish Eat insects in water and grow to provide fish meat Trees Absorb nutrients, CO2 and sunlight to provide habitats Birds Eat insects in trees and around fields; provide meat for cats

39 Complete a biomass pyramid of a farm ecosystem
Stand up, walk around and ask your classmates what their niche is and guess what organism they have in hand. Then complete the pyramid of biomass with the classmates’ name and the organisms’ names. What is your niche in the farm? Are you …………? THANK YOU! Challenge question: What organism or mechanism would you bring in to make this farm more efficient? Why?

40 Adaptations in different habitats
Boardworks KS3 Science 2008 Ecosystems These organisms are all adapted to their environments in very different ways. How are they specially adapted to survive? Photo credit: Jupiterimages Corporation Ecosystems worksheet 1 accompanies this slide.

41 Adaptations in similar habitats
Boardworks KS3 Science 2008 Ecosystems Photo credit: Jupiterimages Corporation

42 What are adaptations for?
Boardworks KS3 Science 2008 Ecosystems

43 Boardworks KS3 Science 2008 Ecosystems
Daily or yearly? Boardworks KS3 Science 2008 Ecosystems

44 Boardworks KS3 Science 2008 Feeding Relationships
Glossary Boardworks KS3 Science 2008 Feeding Relationships biomass – The living material that makes up all organisms. carnivore – An organism that only eats other animals. consumer – An organism that feeds on plants or animals. food chain – A sequence that shows feeding relationships and the transfer of energy between organisms. food web – Food chains that are linked to show the complex feeding relationships in a habitat. herbivore – An organism that only eats plants. omnivore – An organism that eats both plants and animals. producer – An organism that makes its own food. population – The number of organisms of a species living in an area. pyramid of biomass – A diagram, in which the length of each bar represents the biomass at each level of the food chain. pyramid of numbers – A diagram, in which the length of each bar represents the number of organisms present at each level of the food chain.

45 Boardworks KS3 Science 2008 Feeding Relationships
Anagrams Boardworks KS3 Science 2008 Feeding Relationships


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