Small Intestine

Q.

How is the structure of a villi in the small intestine related to its function?

Q.

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.

1. osteichthyes

2. amphibia

3. reptilia

4. aves

Q. Proteins are digested into amino acids and fats into fatty acids. Which one of the following organs is responsible for absorption of fatty acids and amino acids?

1. In small intestine
2. In large intestine
3. In oesophagus
4. In stomach

Q.

Which among the following increases the surface area for absorption?

1. Villi

2. Salivary ducts

3. Cillia

4. Stomach folds

Q. Small intestine receives secretions from ______ and _______.

1. liver, salivary gland
2. gallbladder, salivary gland
3. pancreas, liver
4. pancreas, salivary gland

Q.

One of these is not a digestive gland

1. Kidney

2. Liver

3. Pancreas

4. Salivary.

Q.

What is meant by food ?

Q.

What is meant by food ?

Q. (iii) What do you mean by absorption of food.

Q.

What is roughage ? Give two examples.

Q. Roughage has no nutritive value, yet it is needed by our body. Justify. [1 mark]

Q. Match the following columns and select the correct option.

$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \text{A.}& \text{Liver}& 1& \text{Secretes saliva}\\ \text{B.}& \text{Gallbladder}& 2& \text{Secretes bile}\\ \text{C.}& \text{Salivary gland}& 3& \text{Stores bile}\end{array}$

1. 
   A: 1; B: 3; C: 2
2. 
   A: 2; B: 1; C: 3
3. 
   A: 2; B: 3; C: 1
4. 
   A: 3; B: 1; C: 2

Q.

The given picture depicts the surface of the small intestine. What is the main function of this surface of the small intestine?

1. It is to increase the grinding of food

2. It is to slow down the movement of food

3. It is to store food for emergency

4. It is to increase the surface area for absorption

Q. Arrange the sequence of events in correct order that take place after we ingest food.

1. Digestion, absorption, assimilation, egestion
2. Absorption, egestion, assimilation, digestion
3. Assimilation, absorption, egestion, digestion
4. Egestion, assimilation, absorption, digestion

Q. Diarrhoea is caused due to

1. indigestion
2. hot climate
3. mosquito bites
4. cough

Q.

Which of the following descriptions defines malnutrition?

1. Pumping oxygen rich blood to different areas of the body.

2. Pumping carbon dioxide rich blood to the lungs.

3. Pumping blood from veins to arteries.

4. Pumping oxygen rich blood to different areas of the body and carbon dioxide rich blood to the lungs.

Q. Which among the following is a rich source of protein?

1. Spices
2. Green chilly
3. Rice
4. Pulses

Q.

The pancreatic juice makes the medium ___________ in the small intestine for the action of enzymes present there.

1. Acidic

2. Alkaline

3. Neutral

4. None of the above.

Q. Does the gall bladder temporarily stores the bile? Why?

Q.

Rewrite the following in the correct sequence as directed within the brackets.
Water absorbed, undigested food pass into the large intestine, formation of feces, absorption of digested nutrients by villi, egestion (processes in small intestine and large intestine).

Q. The process of excreting unusable or undigested material through the anus is known as ________ .

1. digestion

2. ingestion

3. assimilation

4. egestion

Q. is considered as a vestigeal organ of the digestive system.

1. Liver
2. Appendix
3. Duodenum

Q. The process of excreting unusable or undigested material through the anus is known as ________ .

1. egestion

2. ingestion

3. assimilation

4. digestion

Q. Explain what will happen if we don't include roughages in our food.

Q.

What does liver secrete?

1. Insulin

2. Bile

3. Gastric juice

4. Mucus

Q.

Name the chemical used in the experiment which absorbs oxygen.

1. Calcium carbonate

2. Acetic acid

3. Pyrogallic acid

4. Sulphuric acid