Saliva and Salivary Glands

Q.

Write an example of herbivores, carnivores, and omnivores?

Q.

Name the sphincter which regulates the exit of food from the stomach

Q.

Name the three salivary glands and their extract location. how does the salivary gland help in digestion?

Q. Salivary amylase converts________ into _________.

1. Proteins into amino acids
2. Glycogen into glucose
3. Starch to maltose
4. Fats into Vitamins

Q. The tongue helps in mixing food with saliva.

1. True
2. False

Q.

Benedicts Test Is Used To Detect :

1. Fats

2. Sucrose

3. Glucose

4. Vitamins

Q.

Iodine solution is used to detect the presence of which food component?

Q.

Why does the food taste sweeter after chewing it for a longer time?

Q.

Organisms that feed on herbivores are

1. Decomposers

2. Carnivores

3. Omnivores

4. Producers

Q.

Which enzymes are responsible for digestion of starch? [3 MARKS]

Q.

Saliva breaks down starch into simple sugars.

1. True

2. False

Q. Saliva breaks down the in the food.

1. fats
2. protiens
3. carbohydrates
4. vitamins

Q.

Potato tuber wash and iodine solution placed together change their colour to

1. Blue-black

2. Blue

3. Brick-red

4. Magenta

Q. Which part of the alimentary canal is involved in the chewing of food?

1. Buccal cavity
2. Oesophagus
3. Rectum
4. Gall bladder

Q. The fluid secreted by the salivary glands that converts starch into maltose is known as _________ .

1. bile juice
2. hormones
3. hydrochloric acid
4. saliva

Q.

Give the exact location of the following.

Salivary gland

Q.

Which of the following option is matched correctly?

1. 1 - Bitter
   2 - Salty
   3 - Sweet
   4 - Sour

2. 1 - Bitter
   2 - Salty
   3 - Sour
   4 - Sweet

3. 1 - Sour
   2 - Sweet
   3 - Bitter
   4 - Salty

4. 1 - Bitter
   2 - Sour
   3 - Salty
   4 - Sweet

Q.

When a food sample is treated with iodine solution, a blue-black colour or precipitate is obtained. What does it indicate?

1. Presence of proteins

2. Presence of starch

3. Presence of fats

4. Presence of vitamins

Q.

Is starch a lipid?

Q.

Name the part in the buccal cavity which helps in digestion

Q. Question 17
Fill in the blanks with suitable words:
(a) The alimentary canal stretches from ___ to ___.
(b) Teeth are rooted in separate ____ in between the ___.
(c) Digestion of food starts in ____ and gets completed in ____.
(d) ____ is the largest gland in the human body.

Q.

Question 2 (a)
Mark (T) if the statement is true and (F) if it is false:
(a) Digestion of starch starts in the stomach.

Q. Boojho took some grains of boiled rice in test tube 'A', and Paheli took ​boiled and chewed rice in test tube 'B'. Both of them poured 1 – 2 drops of iodine solution into the test tube and observed the colour change. What colour change would they have observed? Give reasons for your answer.

Q.

Question 2 (b)
Mark (T) if the statement is true and (F) if it is false:
(b) The tongue helps in mixing food with saliva.

Q. Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘B’. Both of them poured 1 – 2 drops of iodine solution into the test tube and observed the colour change.

What colour change would they have observed? Give reasons for your answer. [3 marks]

Q.

Most of the ingested food can be digested in the mouth.

1. True
2. False

Q.

What are the symptoms of High Amylase?

Q.

Villi are found in

1. Mouth

2. Liver

3. Small intestine

4. Stomach

Q. Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘B’. Both of them poured 1 – 2 drops of iodine solution into the test tube and observed the colour change.

What colour change would they have observed? Give reasons for your answer. [3 marks]

Q.

Name the enzymes present in the saliva of human beings.