biology 1b evolution and environment gcse core 5.2 adaptations in plants

Biology 1b Evolution and EnvironmentBiology 1b Evolution and EnvironmentGCSGCSEE

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5.2 Adaptations in 5.2 Adaptations in plantsplants


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STARTERSTARTERIf an elephant had If an elephant had a small surface a small surface area compared to area compared to its volume. How its volume. How will this affect it in will this affect it in hot climates?hot climates?

Why do very small Why do very small animals find it animals find it difficult to live in difficult to live in the artic?the artic?

Why are artic foxes Why are artic foxes white in the winter?white in the winter?


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I know that plants are adapted to live in a variety of climates.I know that plants are adapted to live in a variety of climates.


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Learning objectivesKQ: How do plants store water to adapt to

hot conditions?

Know that• Plants must be adapted to live in a variety Plants must be adapted to live in a variety

of climates, including desertsof climates, including deserts• Plants must be adapted to survive being Plants must be adapted to survive being

eaten by animals by developing thorns, eaten by animals by developing thorns, poisonous chemicals and warning colours poisonous chemicals and warning colours to put animals offto put animals off

• There are many ways in which plants There are many ways in which plants conserve water in dry environments conserve water in dry environments including, extensive roots, waxy leaves, including, extensive roots, waxy leaves, small leaves and water storage in stemssmall leaves and water storage in stems

• Plants lose water by evaporation Plants lose water by evaporation through leaves.through leaves.


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Task 1: Structure of a leafI know that all living things have adaptations which help them to surviveI know that all living things have adaptations which help them to survive


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Task 2: Transpiration

stream

I know that plants lose water by evaporation through leaves.I know that plants lose water by evaporation through leaves.


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1.1.What are you What are you investigating?investigating?

2.2.How will you investigate How will you investigate this?this?

3.3.How will you record your How will you record your results?results?

4.4.How will you How will you communicate what communicate what you have discovered?you have discovered?

Plants must be adapted to survive being eaten by animals by developing thorns, poisonous chemicals and warning colours to Plants must be adapted to survive being eaten by animals by developing thorns, poisonous chemicals and warning colours to put animals off put animals off There are many ways in which plants conserve water in dry environments including, extensive roots, waxy There are many ways in which plants conserve water in dry environments including, extensive roots, waxy leaves, small leaves and water storage in stemsleaves, small leaves and water storage in stems


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Task 5: 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

• They lose water through tiny holes (stomata) in their leaves when they make food by photosynthesis.

• Draw a diagram and illustrate with words how plants are adapted to different environments


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There are a few desert plants There are a few desert plants with broad leaves and hence a with broad leaves and hence a large SA. These leaves curl to large SA. These leaves curl to catch any dew in the cold catch any dew in the cold evenings, which is then evenings, which is then funnelled to their shallow funnelled to their shallow roots.roots. Other plants in dry Other plants in dry

environments have curled environments have curled leaves which reduces the leaves which reduces the surface area and traps a layer surface area and traps a layer of moist air around the leaf of moist air around the leaf which reduces the amount of which reduces the amount of water they lose by evaporation.water they lose by evaporation.


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Most plants that live in dry Most plants that live in dry environments have a reduced environments have a reduced surface area. surface area. Why?Why?

What other leaf characteristics What other leaf characteristics are good for desert living?are good for desert living?

Why do plants need water?Why do plants need water?

How do plants lose water from How do plants lose water from their leaves?their leaves?

Why do plants often reduce the Why do plants often reduce the SA of their leaves to help them SA of their leaves to help them prevent water loss?prevent water loss?


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Three adaptations of plantsThree adaptations of plants

1.1.Leaf (size, shape etc)Leaf (size, shape etc)2.2.Water storage methodsWater storage methods3.3.Keeping animals awayKeeping animals away


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1.1.Where might small plants Where might small plants find it difficult to receive find it difficult to receive enough light?enough light?

2.2.State 3 ways a plant might State 3 ways a plant might conserve water.conserve water.

3.3.How do animals know not to How do animals know not to eat certain plants?eat certain plants?


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Learning objectivesKQ: How do plants store water to adapt to

hot conditions?

Know that• Plants must be adapted to live in a variety Plants must be adapted to live in a variety

of climates, including desertsof climates, including deserts• Plants must be adapted to survive being Plants must be adapted to survive being

eaten by animals by developing thorns, eaten by animals by developing thorns, poisonous chemicals and warning colours poisonous chemicals and warning colours to put animals offto put animals off

• There are many ways in which plants There are many ways in which plants conserve water in dry environments conserve water in dry environments including, extensive roots, waxy leaves, including, extensive roots, waxy leaves, small leaves and water storage in stemssmall leaves and water storage in stems

• Plants lose water by evaporation Plants lose water by evaporation through leaves.through leaves.


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Animal adaptations in the Desert

• Lizards are adapted to the desert…..• Their special features are …


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Adaptations to the Ocean

• Killer whales are adapted to the ocean…..• Their special features are …


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Adaptations to the Ocean

• Fish are adapted to the ocean…..• Their special features are …


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Adaptations in a woodland

• Which types of animals live I the woodland?• What features would they need to survive?


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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

biology 1b evolution and environment gcse core 5.2 adaptations in plants

Documents

stems plants

desert plants

b evolution

small leaves

deserts plants

water storage

waxy leaves

environment gcse core