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(a) Why is small intestine in herbivores...

(a) Why is small intestine in herbivores longer than in carnivores ?
(b) What causes movement of food inside the alimentary canal?

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Cellulose forms the largest part of an herbivore's food . Digestion of cellulose takes a longer time , because the enzymes are produced by the ruminant bacteria that live in the gut of the herbivore. Longer small intestine ensures that the food stays for a longer duration and proper digestion is possible. In the case of carnivores, cellulose is not present in the diet thus the length of small intestive in less.
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NCERT EXEMPLAR ENGLISH-LIFE PROCESSES-Short Answer Type Questions
  1. Differentiate between an artery and a vein.

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  2. What are the adaptations of leaf for photosynthesis ?

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  3. (a) Why is small intestine in herbivores longer than in carnivores ? ...

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  4. What will happen if mucus is not secreted by the gastric glands ?

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  5. What is the significance of emulsification of fats ?

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  6. What causes movement of food inside the alimentary canal ?

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  7. Why does absorption of digested food occur mainly in the small intesti...

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  8. Match the following columns.

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  9. Why is the rate of breathing in aquatic organisms much faster than in ...

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  10. Why is the advantage of having four chambered heart ?

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  11. What is the major events during photosynthesis.

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  12. Mention the major events during photosynthesis.

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  13. In each of the following situations what happens to the rate of photos...

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  14. Name the energy currency in the living organisms .When and where is it...

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  15. What is common for Cuscuta,ticks and leeches ?

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  16. Explain the role of mouth in digestion of food.

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  17. What are the functions of gastric glands present in the wall of the st...

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  18. Match the terms in column I with those in column II . {:("Column I...

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  19. Name the correct substrates for the following enzymes (a) Trypsin ...

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  20. Why do veins have thin walls as compared to arteries ?

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