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Nguyen Ly Posted 8 years ago
Grammar

Hard question

"Some theories about anthocyanins (red pigments) have argued that they might act as a chemical defence against attacks by insects or fungi, or that they might attract fruit-eating birds or increase a leaf’s tolerance to freezing. However there are problems with each of these theories, including the fact that leaves are red for such a relatively short period that the expense of energy needed to manufacture the anthocyanins would outweighany anti-fungal or anti-herbivore activity achieved.

Perhaps the most plausible suggestion as to why leaves would go to the trouble of making anthocyanins when they’re busy packing up for the winter is the theory known as the ‘light screen’ hypothesis. It sounds paradoxical, because the idea behind this hypothesis is that the red pigment is made in autumn leaves to protect chlorophyll, the light-absorbing chemical, from too much light. Why does chlorophyll need protection when it is the natural world’s supreme light absorber? Why protect chlorophyll at a time when the tree is breaking it down to salvage as much of it as possible?"

Based on the article above, Can anyone figure this statement below?

1.It is likely that the red pigments help to protect the leaf from freezing temperatures. ( TRUE, FALSE, NOT GIVEN)

Thankfully,

Nguyen

  

Top answer

I'd say FALSE. The text suggests that it is NOT likely that the red pigments help to protect the leaf from freezing temperatures. It argues that another theory is more likely: theories about anthocyanins (red pigments) have argued that ...

  • I'd say FALSE.
  • The text suggests that it is NOT likely that the red pigments help to protect the leaf from freezing temperatures.
  • It argues that another theory is more likely: theories about anthocyanins (red pigments) have argued that ...
  • they might ...
  • increase a leaf’s tolerance to freezing.
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1 Answers
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I'd say FALSE.

The text suggests that it is NOT likely that the red pigments help to protect the leaf from freezing temperatures. It argues that another theory is more likely:

theories about anthocyanins (red pigments) have argued that ... they might ... increase a leaf’s tolerance to freezing. However there are problems ..., including the fact that leaves are red for such a re

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