Physiology of Digestion

Q.

Why is there no enzyme to digest vitamins ?

Q.

What is the function of bile duct? [1 MARK]

Q.

A chemical is used to test starch.

Q.

What is digestion ? Why do only animals require a digestive system ?

Q.

The muscular contraction which moves food through the digestive track is called as __________.

1. deglutition

2. peristalsis

3. movement

4. contraction

Q. is the series of wave-like muscular contractions that moves food in the digestive tract.

1. Active transport
2. Peristalsis
3. Osmosis

Q. Pylorus is an opening from​

1. mouth cavity into oesophagus
2. stomach into intestine​
3. oesophagus into stomach​
4. intestine into rectum​

Q. help in increasing the surface area of the small intestine, which aids in efficient .

1. Villi
2. Chylomicrons
3. nutrient absorption
4. nutrient release

Q.

To prepare a temporary mount of a leaf peel for observing stomata, the chemicals used for staining and mounting respectively are

1. safranin and iodine.

2. safranin and glycerine.

3. iodine and safranin.

4. glycerine and iodine.

Q.

Change of large droplets of fat into small droplets by the action of bile.

Q. Which of the following is essential for regulated movement of food from the oesophagus to anus?

1. Diffusion
2. Osmosis
3. Peristalsis
4. Secretion of glands

Q.

What is the main purpose of carbohydrates in our body?

Q.

Is vomiting bile bad?

Q.

Why do female mosquitoes need highly nutritious food in the form of of human blood?

Q.

___ process of utilization of the absorbed food by the body.

Q.

Name the parts of the large intestine. In which part does absorption of water and formation of feces take place?

Q.

help in absorption of digested food from small intestine.

Q.

What is the role of:

(c) Mucus?

Q. Consider the following two statements A & B and select the right from (i)-(iv) about their correctness. ​
A. Small intestine is shorter than large intestine. ​
B. Small intestine is wider than large intestine. ​

1. Statement A is correct, B is wrong​
2. Both the statements are correct​
3. Statement B is correct, A is wrong​
4. Both the statements are wrong​

Q. Select the function(s) of the gall bladder.

1. Produces bile juice
2. Stores bile juice
3. Emulsifies fats
4. Releases bile juice

Q. Why is the small intestine the most important organ of the digestive system?​

Q. Match the terms given in column 'A' with those in column 'B'.

	Column A		Column B
(a)	bilirubin and biliverdin	(i)	parotid
(b)	hydrolysis of starch	(ii)	bile
(c)	digestion of fat	(iii)	lipases
(d)	salivary gland	(iv)	amylases

Q.

In context with the adaptations of the stomach in humans, fill in the blanks by choosing the correct option :

The stomach in humans is lined with an extra layer of _____(i)_____ for better mixing and churning of food. It even has numerous folds called ____(ii)____ to increase the area of absorption with many inner mucosal secretory glands called _____(iii)____for the production of enzymes and has specially formulated ____(iv)____ to protect the walls of the stomach from the action of HCl.

1. i).➡ Muscle, ii).➡ Rugae, iii).➡ Gastric glands, iv). ➡ Mucus.

2. i).➡ Rugae, ii).➡ Gastric glands, iii).➡ Mucus, iv). ➡ Muscle

3. i).➡ Gastric glands, ii).➡Mucus, iii).➡ Muscle, iv). ➡ Rugae

4. i).➡ Mucus, ii).➡ Muscle, iii).➡ Rugae, iv). ➡ Gastric glands

Q.

Choose the function of the pancreatic juice from the following

1. Trypsin digests proteins and lipase carbohydrates.

2. Trypsin digests emulsified fats and lipase proteins.

3. Trypsin and lipase digest fats.

4. Trypsin digests proteins and lipase emulsified fats.

Q. Digestion is brought about by ______ .

1. enzymes
2. mucus
3. hormones
4. water

Q.

Absorption of water and formation of faeces takes place in ______________________

Q.

Villi helps to

1. digest food

2. absorb food

3. remove food

4. eat food

Q.

In context with the adaptations of the stomach in humans, fill in the blanks by choosing the correct option.

The stomach in humans is lined with an extra layer of _____(i)_____ for better mixing and churning of food. It even has numerous folds called ____(ii)____ to increase the area of absorption with many inner mucosal secretory glands called _____(iii)____for the production of enzymes and has specially formulated ____(iv)____ to protect the walls of the stomach from the action of HCl.

1. i).➡ Muscle, ii).➡ Rugae, iii).➡ Gastric glands, iv). ➡ Mucus.

2. i).➡ Rugae, ii).➡ Gastric glands, iii).➡ Mucus, iv). ➡ Muscle

3. i).➡ Gastric glands, ii).➡Mucus, iii).➡ Muscle, iv). ➡ Rugae

4. i).➡ Mucus, ii).➡ Muscle, iii).➡ Rugae, iv). ➡ Gastric glands

Q.

Which of the following structure secretes lactase enzyme?

1. Stomach
2. Large intestine
3. Small intestine
4. Oesophagus

Q. The process of breakdown of complex food substances into simpler absorbable forms is called ____.

1. ingestion
2. digestion
3. excretion
4. absorption