1. In the small intestine the innermost layer is in the shape of finger like structures. These are known as villi. Several folds because of villi increase the absorbing surface of small intestine. The blood capillaries in villi absorb simpler molecules from food.

    In the small intestine the innermost layer is in the shape of finger like structures. These are known as villi. Several folds because of villi increase the absorbing surface of small intestine. The blood capillaries in villi absorb simpler molecules from food.

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  2. The function of digestive enzyme is to hasten the process of breaking up of complex molecules into simpler and absorbable molecules. This makes it easy for the body to absorb food.

    The function of digestive enzyme is to hasten the process of breaking up of complex molecules into simpler and absorbable molecules. This makes it easy for the body to absorb food.

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  3. The hydrochloric acid is found in our stomach. It helps in killing harmful germs which may have come along with food.

    The hydrochloric acid is found in our stomach. It helps in killing harmful germs which may have come along with food.

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  4. Autotrophic nutrition means that the organism is preparing its own food and is not dependent on any other organism for food. Green plants are autotrophs. Heterotrophic nutrition means that the organism does not prepare its own food and is dependent on other organisms for food. All organisms which arRead more

    Autotrophic nutrition means that the organism is preparing its own food and is not dependent on any other organism for food. Green plants are autotrophs.

    Heterotrophic nutrition means that the organism does not prepare its own food and is dependent on other organisms for food. All organisms which are not among green plants are heterotrophic.

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  5. Processes essential for maintaining life are as follows: Nutrition Respiration Reproduction Excretion Locomotion or movement

    Processes essential for maintaining life are as follows:
    Nutrition
    Respiration
    Reproduction
    Excretion
    Locomotion or movement

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