Environmental VariationEnvironmental Variation

D. Crowley, 2008D. Crowley, 2008

Environmental VariationEnvironmental Variation To understand what can cause environmental variationTo understand what can cause environmental variation

Environmental VariationEnvironmental Variation Look at the pictures of Posh – what differences can you see?Look at the pictures of Posh – what differences can you see?

What causes these differences?What causes these differences?

Environmental VariationEnvironmental Variation What causes the differences below?What causes the differences below?

Amount of water; light; nutrients; space etc…Amount of water; light; nutrients; space etc…

Environmental VariationEnvironmental Variation What causes the differences below?What causes the differences below?

The amount of food we eat can The amount of food we eat can drastically change the way we drastically change the way we appearappear

This is an example of This is an example of environmental variation!environmental variation!

Environmental VariationEnvironmental Variation Characteristics of animals and plants can be affected by factors Characteristics of animals and plants can be affected by factors

such as climate, diet, accidents, culture and lifestylesuch as climate, diet, accidents, culture and lifestyle

If you eat too much you will become heavier, and if you eat too little If you eat too much you will become heavier, and if you eat too little you will become lighteryou will become lighter

A plant in the shade of a big tree will not be able to photosynthesise A plant in the shade of a big tree will not be able to photosynthesise as quickly as one in the sunshine, so it will be smalleras quickly as one in the sunshine, so it will be smaller

Variation in a feature as a Variation in a feature as a result of the surroundings, is result of the surroundings, is called called environmental variationenvironmental variation

Inherited & EnvironmentalInherited & Environmental Some variation within a species is inherited, and some variation is Some variation within a species is inherited, and some variation is

due to the environment due to the environment

Variation in a feature as a result of inheritance from the parents, is Variation in a feature as a result of inheritance from the parents, is called inherited variation called inherited variation

Variation in a feature as a result of a certain factor in the Variation in a feature as a result of a certain factor in the surroundings is called environmental variation surroundings is called environmental variation

Inherited Or EnvironmentalInherited Or Environmental Copy out these variations in your book, and say if they are inherited Copy out these variations in your book, and say if they are inherited

or environmental variations: -or environmental variations: -

Hair colour (natural)Hair colour (natural) Hair lengthHair length LanguageLanguage Eye colourEye colour Gender (male / female)Gender (male / female) WeightWeight Colour of flowers (hydrangeas)Colour of flowers (hydrangeas) Skin colourSkin colour ReligionReligion Lobbed / lobeless earsLobbed / lobeless ears TattoosTattoos

InheritedEnvironmentalEnvironmentalInheritedInheritedEnvironmentalEnvironmental (acid / alkali soil)InheritedEnvironmentalInheritedEnvironmental

Gone FishingGone Fishing Complete the Complete the gone fishinggone fishing

worksheetworksheet

Gone FishingGone Fishing

1.1. The warmer the water, the less oxygen dissolves & the warmer the The warmer the water, the less oxygen dissolves & the warmer the water, the more gill movements per minutewater, the more gill movements per minute

2.2. The less oxygen dissolved, the more gill movements per minuteThe less oxygen dissolved, the more gill movements per minute

3.3.

Oxygen dissolved

Gill Movementincreasing

increasing

Gone FishingGone Fishing

4.4. A group of organisms that can reproduce producing reproductively A group of organisms that can reproduce producing reproductively viable offspringviable offspring

5.5. Same species – 1, 9 & 10; 3, 4, 6 & 7; 2, 5 & 8Same species – 1, 9 & 10; 3, 4, 6 & 7; 2, 5 & 8

6.6. Variations include body shape; number of fins; position of fins; Variations include body shape; number of fins; position of fins; markings etc…markings etc…

7.7. Same species variations include markings and body lengthSame species variations include markings and body length

8.8. The longer the fish, the more sports it has on its tailThe longer the fish, the more sports it has on its tail

9.9. Cross between these two fish (characteristics from each) Cross between these two fish (characteristics from each)

10.10. Mule (horse + donkey); liger (tiger + lion); zebroid (horse + zebra)Mule (horse + donkey); liger (tiger + lion); zebroid (horse + zebra)

11.11. Hybrids cannot reproduceHybrids cannot reproduce