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.
- 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.
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.
- 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.
- Option : C
- Explanation : The rain is the ultimate source of freshwater. It makes rivers, lakes and glaciers.
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