KS3 Y9 Species, Variation and Environmental Factors

Gap-fill exercise.

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Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button if available to get a clue. Note that you will lose points if you ask for hints or clues!
   amount of light      amount of water      catch disease      characteristics      differences      domesticated      environment      environmental factors      factors      genes      genetically      genotype      height      identical      look      mineral salts      more resistant      not identical      nvironmental factors      offsprings      reproduce      short      similar      size      species      taste      temperature      variation      varieties   
9Ab Species, variation and environmental factors

A group of organisms that can and their can also is called a .

However within the same their individual members are . We call this .

Both animal and plant show such .

Within the horse species there are many different types of horses. We call this . There are and there are tall horses. We see this in other animals like cats and dogs.

If two groups of plants are of the same but have clear we call this . There many of apples and pears. Some sweeter than others and very different. In the case of pears we have the example of the Green Anjou pear. This pear does not easily and thus is said to be to diseases. Such variation is due to the of the pears that determine its .

We find in other fruits like apples too.

There are two causing . One is due to the and the other is due to e.

Take for instance the simple potato. There are many different of potatos. This is due to the of the variation. We call this . The the potato plant is growing in which includes the reaching the leaves of the plant, the of the environment, the the plant is getting in the roots and the amount of in the soil will all influence the of the potatos produced.

In the case of humans, should two twins be separated at a young age, one been adopted by a family that feeds the child well and the other been adopted by a poor family and so cannot feed the twin well, although they are the same, their and may well be different. This would be due to .

 

 

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