Tag: evs

Questions Related to evs

Raju got stomach ache. Which of the following could be a reason?

evs from tasting to digestion balanced diet and malnutrition assimilation of food components and importance of food science of kitchen

  1. He ate food at seven in the evening.

  2. He drank water after eating food.

  3. He did not chew the food properly.

  4. He did not wash his hands properly after eating food.

Show answer
Correct Option: C
Explanation:

  • Chewing breaks your food down from large particles into smaller particles that are more easily digested.
  •  This also makes it easier for your intestines to absorb nutrients from the food particles as they pass through.
  •  Chewing properly allows your stomach to work more efficiently and break down your food faster. Hence, Raju got the stomach ache as he did not chew the food properly.
So, the correct answer is 'He did not chew the food properly'.

Which of the following activities improves digestion?

evs from tasting to digestion balanced diet and malnutrition assimilation of food components and importance of food science of kitchen

  1. Swallowing

  2. Chewing

  3. Dehydration

  4. None of the above

Show answer
Correct Option: B
Explanation:
Chewing is an important step in digestion. It helps in breaking down of food mechanically into finer texture and thus increase surface area of food for the action of saliva. Hence it improves digestion.
So, the correct answer is 'Chewing'.

A piece of bread should be chewed .......... times and then swallowed. 

evs from tasting to digestion balanced diet and malnutrition assimilation of food components and importance of food science of kitchen

  1. 2

  2. 10

  3. 20

  4. 5

Show answer
Correct Option: C
Explanation:

Chewing of food is the process of mastication of food. It is important to break down the food mechanically by teeth so that it gets easily mixed with saliva and swallowed. The food should be chewed 20 times before swallow it to increase its surface area.

So the correct answer is '20'. 

Identify the function of teeth.

evs from tasting to digestion balanced diet and malnutrition assimilation of food components and importance of food science of kitchen

  1. Chewing of food

  2. Mixing of saliva with food

  3. Swallowing of food

  4. None of the above

Show answer
Correct Option: A
Explanation:

The function of teeth is chewing of food. It chewing is an important step in direction because it helps to break down the food mechanically, and thus increase the surface area for saliva to do its work.

So the correct answer is 'Chewing of food'. 

Chewing is required for

evs from tasting to digestion balanced diet and malnutrition assimilation of food components and importance of food science of kitchen

  1. Solubilisation of food

  2. Enjoying the taste of food

  3. Decreasing surface area of food

  4. Increasing surface area of food

Show answer
Correct Option: D

The major utility of breaking up of food into small bits during chewing is

evs from tasting to digestion balanced diet and malnutrition assimilation of food components and importance of food science of kitchen

  1. To reduce surface area of the food eaten up

  2. To increase surface area of the food eaten up

  3. To make the food soluble

  4. To enjoy taste of food

Show answer
Correct Option: B
Explanation:

Chewing breaks the large food particles into the small. The mechanical digestion of food in the mouth involves converting bite-sized pieces of food into smaller particles. This has the effect of increasing the surface area of the food particles and allowing saliva to be thoroughly mixed with them.

So, the correct answer is 'To increase the surface area of the food eaten up'.

Lumbar vertebrae are found in:

evs bones skeletal system and muscles assimilation of food components and importance of food

  1. neck region

  2. abdominal region

  3. hip region

  4. thorax

Show answer
Correct Option: A
Explanation:

Lumbar vertebrae are found in the 'abdominal region'.

So the correct answer is 'Neck region'.

The fore arm has two bones.

evs bones skeletal system and muscles assimilation of food components and importance of food

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
The forearm is the region of the upper limb between the elbow and the wrist. The forearm contains two long bones, the radius and the ulna, forming the radioulnar joint. The ulna is the longer and larger of the two bones, residing on the medial side of the forearm. Compared to the ulna, the radius is slightly shorter, thinner, and extends from the lateral side of the elbow. 
So, the answer is true.

The finger bones do not have joints.

evs bones skeletal system and muscles assimilation of food components and importance of food

  1. True

  2. False

Show answer
Correct Option: B
Explanation:
The hand and wrist are made up of many different bones, muscles and ligaments that enable a wide range of movements. Rather than a single joint, each of the fingers has three joints: Metacarpophalangeal joint (MCP)- joint at the base of the finger, Proximal interphalangeal joint (PIP)- joint in the middle of the finger and Distal interphalangeal joint (DIP)- joint closest to the fingertip. Each thumb has two joints.
So, the answer is false.

Read the following statements and find out the incorrect statement.
A. About $45-50\%$ of the body weight of a human adult is contributed by muscles.
B. Muscles have special properties like excitability, contractility, extensibility and elasticity.
C. Based on their location, three types of muscles are identified: skeletal, smooth and cardiac.
D. Based on appearance, cardiac muscles are striated. They are involuntary in nature as the nervous system does not control their activity directly.

evs bones skeletal system and muscles assimilation of food components and importance of food

  1. B & C

  2. A & C

  3. Only A

  4. A & D

Show answer
Correct Option: A
Explanation:
  1. A major bulk of body weight; 45−50% is contributed by muscles.
    2. All muscle cells share four primary properties that distinguish them from other cells : excitability, contractility, extensibility and elasticity.
    3. Based on their location, three types of muscles are identified: skeletal, smooth and cardiac.
    4. Cardiac muscles are striated in appearance and myogenic in nature.
    So, none of the given options are incorrect.