Chemistry of Life in Living Organisms
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Questions and Answers

Which of the following is an example of a chemical used by plants in defense against herbivores?

  • Insulin
  • Haemoglobin
  • Keratin
  • Chemicals released by the black walnut tree (correct)

What is the main purpose of plants releasing chemicals to limit damage from animals?

  • To provide food sources for specific animals
  • To attract more animals for pollination
  • To enhance the taste of their fruits
  • To protect themselves from herbivores (correct)

Which chemicals are unique to the plant kingdom according to the text?

  • Chemicals used in chemical warfare against herbivores (correct)
  • Some chemicals shared with animals and unique ones
  • Keratin, insulin, haemoglobin
  • Sugars, proteins, fats

How do some reptiles use pheromones according to the text?

<p>To mark territory even in their absence (C)</p> Signup and view all the answers

What effect do the chemicals released by the black walnut tree have on other trees?

<p>They inhibit the growth of other trees. (D)</p> Signup and view all the answers

Which chemical is mentioned as a red pigment in blood cells?

<p>Haemoglobin (B)</p> Signup and view all the answers

What is one way plants benefit from using chemical warfare according to the text?

<p>To protect themselves and reduce competition for resources. (C)</p> Signup and view all the answers

Why do most animals avoid the chili pepper tree according to the text?

<p>Because it has toxic chemicals that animals cannot stand. (C)</p> Signup and view all the answers

Which of the following is a purpose of plants releasing chemicals to limit damage from animals?

<p>To discourage animals from consuming their foliage. (B)</p> Signup and view all the answers

What role do pheromones play in marking territory according to the text?

<p>Repelling intruders and protecting territory. (B)</p> Signup and view all the answers

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