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Adaptations to life GCSE Biology 1b Evolution and Environment CORE Adaptations to life in the classroom Your new partners for the remainder of Biology 1 are as follows. Please move as requested. These will change again for Chemistry 1 (after half term break) GCSE Biology 1b Evolution and Environment CORE GCSE Biology 1b Evolution and Environment CORE Learning objectives KQ: How can hair/fur help animals to survive in very cold climates? Know that • all living things have adaptations which help them to survive. These are not just physical but can be behavioural • There are dis/advantages to lots of body fat • animals adapted to cold environments are often large, with a small SA:V ratio and thick insulating layers of fur and fat. • animals adapted to hot, dry environments often have a large SA:V, thin fur, little body fat and behaviour patterns that avoid the heat during the day. • by changing their coat colour some organisms are always camouflaged GCSE Biology 1b Evolution and Environment CORE I know that all living things have adaptations which help them to survive Adaptations • All organisms need food,water and nutrients to grow. • Environments, such as rainforests and coral The larger the animal reefs, are very the smaller itsdifferent. surface • To grow well and area is when compared produce offspring, an organism needs special to isits volume. Surface Area:Volume features to survive in the ratio of how big an its habitat animal is compared to how • We call these much space they take up! characteristics Why is this important? adaptations. GCSE Biology 1b Evolution and Environment CORE Task 1: Adaptations 1. Divide the animals and plants into ‘hot’ and ‘cold’ environments. 2. Identify some common adaptations that each group have. GCSE Biology 1b Evolution and Environment CORE If a penguin Stood in a box The size of the box would be 5cm length, width, depth What would be the surface area of such a box? (5x5) x6 = 150 What would be the volume of the same box? 5x5x5 = 125 What is the SA:V ratio for this penguin? 150:125 simplify 6:5 GCSE Biology 1b Evolution and Environment CORE •Often large, •Small SA:V ratio •Thick insulating layers of fur •Small SA on ears •Thick layer of blubber also used as a source of food GCSE Biology 1b Evolution and Environment CORE If a fox Stood in a box The size of the box would be 1cm length, width, depth What would be the surface area of such a box? (1x1) x6 = 6 What would be the volume of the same box? What is the SA:V ratio for this penguin? GCSE 1x1x1 = 1 6:1 Biology 1b Evolution and Environment CORE •Have a large SA:V which helps them lose heat through their skin •Large and thin ears to help with larger SA •Little fur which is fine and silky so its easier to lose heat •Little body fat so its easier to lose body heat •behaviour patterns that avoid the heat during the day and are more active in cooler times of the day •Obtain the water they need from their food GCSE Biology 1b Evolution and Environment CORE By changing their coat colour some organisms are always camouflaged. GCSE Biology 1b Evolution and Environment CORE You have 3 mins planning time 2 mins gathering time 5 mins making time Then you and your partner will have an animal that you will need to explain an adaptation it has and to which environment (cold or hot) GCSE Biology 1b Evolution and Environment CORE You and your partner have 30secs to explain where your animal lives and what its adaptation is GCSE Biology 1b Evolution and Environment CORE Learning objectives KQ: How can hair/fur help animals to survive in very cold climates? Know that • all living things have adaptations which help them to survive • There are advantages and disadvantages to lots of body fat • animals adapted to cold environments are often large, with a small SA:V ratio and thick insulating layers of fur and fat. • animals adapted to hot, dry environments often have a large SA:V, thin fur, little body fat and behaviour patterns that avoid the heat during the day. • by changing their coat colour some organisms are always camouflaged GCSE Biology 1b Evolution and Environment CORE Animal adaptations in the Desert • Lizards are adapted to the desert….. • Their special features are … GCSE Biology 1b Evolution and Environment CORE Adaptations to the Ocean • Killer whales are adapted to the ocean….. • Their special features are … GCSE Biology 1b Evolution and Environment CORE Adaptations to the Ocean • Fish are adapted to the ocean….. • Their special features are … GCSE Biology 1b Evolution and Environment CORE Adaptations in a woodland • Which types of animals live I the woodland? • What features would they need to survive? GCSE Biology 1b Evolution and Environment CORE Task 4: Plant adaptations in the Desert • Plants like cacti have adaptations such as very deep or wide root systems to collect as much water as possible. • Plants that live in dry areas also need adaptations to reduce the amount of water they lose • GCSE Draw a diagram and illustrate with words how plants are adapted to different environments • They lose water through tiny holes (stomata) in their leaves when they make food by photosynthesis. Biology 1b Evolution and Environment CORE Summary task • Past exam question – what have you learnt???? • • plants lose water by evaporation through leaves. plants in dry areas have reduced surface area on their leaves and/or water storage tissues. KQ: How do plants store water to adapt to hot conditions? GCSE Biology 1b Evolution and Environment CORE Learning objectives • State materials organisms need from their surroundings to survive • Describe adaptations of some organisms to their environment • Explain how plants can survive in areas of limited water GCSE Biology 1b Evolution and Environment CORE