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Animal Survival Responding to the Environment. G1: Give examples of environmental factors that affect behaviour –Moisture –pH –Light –Temperature.

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Presentation on theme: "Animal Survival Responding to the Environment. G1: Give examples of environmental factors that affect behaviour –Moisture –pH –Light –Temperature."— Presentation transcript:

1 Animal Survival Responding to the Environment

2 G1: Give examples of environmental factors that affect behaviour –Moisture –pH –Light –Temperature

3 C1: Explain the significance of responding to environmental stimuli

4 Woodlice Found in damp, dark conditions Why damp? Prevents body from drying out Why dark? Less likely to be seen by predators

5 Plant Shoots Will grow towards the light source Why? To improve the rate of photosynthesis

6 Frogs Found in damp conditions Why? Water is required for external fertilisation Frogs need moist skin for gas exchange

7 Choice Chamber Dark Light Dark Light G2: Describe the response of an animal to change in one environmental factor. 10 minutes eg, Woodlice  Light/Dark Conditions

8 Woodlice do not deliberately move to the dark side – when they are in bright light they move around more quickly and if they happen to move into the dark side they will slow down or stop.

9 Rhythmical Behaviour = behaviour that is repeated at definite intervals (daily, tidal or annually) External Trigger Stimulus = the environmental factor which causes the behaviour to start. G3: Describe examples of rhythmical behaviour and in each case, identify the external trigger stimulus. C2: Explain the significance of rhythmical behaviour in named animals.

10 Birds Migrate to warmer climates (annual rhythm) Trigger Stimulus = shorter day length Reason = escape cold temperature and shortage of food during the winter

11 Hedgehogs Hibernate through winter months (annual rhythm) Trigger Stimulus = shorter day length Reason = shortage of food during the winter

12 Cockroaches More active at night (daily rhythm - circadian rhythm) Trigger Stimulus = darkness Reason = avoid predators by feeding at night

13 Supported Study Programme DateBiology Topic/Type of Revision Tues 24 th Feb Problem Solving Wed 3 rd March The Body In Action (Movement, The Need for Energy) Wed 10 th March Animal Survival (Reproduction, Respond to Environment) Wed 17 th March Animal Survival (Water & Waste, The Need for Food) Wed 24 th March Inheritance Tues 30 th March Investigating Cells (Investigating Cells, Diffusion, Osmosis) Wed 21 st April Biotechnology

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