Insect Life Cycles and Adaptions for Nutrition

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  • Created by: Loomy
  • Created on: 22-04-14 11:32

1. Why do humans have a gut of intermediate length between carnivores and herbivores?

  • Carnivores and herbivores can regurgitate their food it needs to digest it further
  • The human gut is more efficient than a herbivore gut
  • Humans are omnivores (eat both meat and plant material)
  • Humans do not need to digest cellulose
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2. What are the stages in complete metamorphosis?

  • Egg > Larva > Pupa > Adult
  • Egg > Pupa > Larva > Adult
  • Egg > Larva > Adult
  • Egg > Adolescent > Pupa > Larva > Adult

3. What difference is there between the guts of carnivores and herbivores?

  • Carnivores have a larger caecum than herbivores
  • The carnivore gut is much shorter than the herbivore gut
  • Herbivores have a duodenum, carnivores do not
  • Carnivores have a longer small intestine than herbivores

4. Why do herbivores need a lot of bacteria within the caecum?

  • Because herbivores cannot digest cellulose on their own, they need cellulase to digest it
  • The bacteria break down proteins
  • The bateria produce a lot of acid, providing the optimum conditions for enzymes
  • The herbivore cannot digest the lignin in plant cell walls, so the bacteria contain ligase to digest it

5. Where in the human gut does absorption take place?

  • Small intestine and large intestine
  • Large intestine
  • Mouth and large intestine
  • Stomach, small intestine and large intestine

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