CTET Solved Paper - CTET Feburary 2016 Paper2
- A
Human beings do not, have cellulose-digesting enzymes.
- B
Cellulose is a type of carbohydrate, which gets absorbed in the human blood and gives energy.
- C
Cellulose breaks down easily into smaller components which are egested as roughages.
- D
The cellulose-digesting bacteria present in human beings convert cellulose into fibres.
- Option : A
- Explanation : Human beings do not have cellulose-digesting enzymes because its sources in alimentary canal vermiform appendix are nonfunctional and remain as a Vestigial organ.
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- Option : B
- Explanation : Science teacher should help the students revisit their ideas through various activities to clear the alternative conception related to various science concepts.
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38. The joint between head and upper jaw is an example of
- Option : B
- Explanation : Joint between head and upper jaw is an example of fixed joint. This joint makes impossible for upper to move because it is made with dense connective tissue of collagen.
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- Option : A
- Explanation : The question, "What difficulties would we face if our bodies did not have muscles in it?" is an open-ended question which can have an elaborated answer.
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- Option : C
- Explanation : The rain is the ultimate source of freshwater. It makes rivers, lakes and glaciers.
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