Science Form 2_Chap 3.4 Absorption,Transportation,Defecation

The structure shown is a villus. How the structure enables the digested food to be absorbed easily?

• This structure has a one-cell thick wall.

• This structure has a thick wall.

Tags

NGSS.MS-LS1-2

The process of elimination of faeces from the body is called .................

• assimilation

• absorption of digested food.

• chemical digestion

• defecation

Which statement is correct regarding the importance of fibre?

• Helps to stimulate peristalsis and prevents constipation.

• Controls and regulates the body temperature in our body.

The main site of absorption of water is

• stomach

• duodenum

• large intestine

• oesophagus

Which of the following is/are absorbed into the network of blood capillaries of villi?

• Glycerol

• Glucose

• Glycogen

• Sucrose

Which of the following is/are the function of large intestine?

• Digest food materials

• Absorb digested food

• Absorb water from indigestible materials

• Stores indigestible materials

Egestion/defecation refers to the removal of

• undigested food

• nutrients

• food

• carbon dioxide

Diagram shows the set-up of an apparatus to investigate the digestion and absorption of starch. The distilled water in the beaker is then tested with iodine solution. Which of the following changes can be observed?

• The mixture turns dark blue

• A brick-red precipitate is formed

• A white precipitate is formed

• No change are observed

What is the meaning of assimilation process?

• The distribution of the end products of digestion for the use of body cells

• The transportation of the end products of digestion for the use of body cells

• The breakdown of food through muscle contractions and relaxations

• The movement of food through muscle contractions and relaxations

Which of the following statements is correct about the human digestive system?

• Faeces are formed in the stomach

• Defecation require the muscular contraction of the wall of the small intestine

• The digestion of food is completed in the stomach

• The reabsorption of water occur in the large intestine