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What are villi?

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प्रश्न

What are villi?

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उत्तर

The ileum is the longest part of the small intestine. It contains minute finger-like projections called villi. They help in the absorption of food.

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अध्याय 2: Nutrition in Animals - Exercises [पृष्ठ २१]

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एनसीईआरटी Science [English] Class 7
अध्याय 2 Nutrition in Animals
Exercises | Q 5. (i) | पृष्ठ २१

संबंधित प्रश्न

Why do we get instant energy from glucose?


Which part of the digestive canal is involved in:

Absorption of food ______.


Carbohydrates are bodybuilding nutrients.


Describe one way in which the small intestine is adapted for the absorption of digested food.


Which of the following component of our food is digested by an enzyme which is present in saliva as well as in pancreatic juice?


Which of the following are the correct functions of two components of pancreatic juice trypsin and lipase?


Study the following dental formula and then answer the question that follow:

`"i"  3/4   "c"   0/0   "pm"   0/1   "m"   1/1`

State the total number of teeth present in the dentition. 


Write the function of the following in the human alimentary canal:

HCl in stomach


Fill in the blanks.

Incisors are used for _____ and _____ the food.


Given alongside is the diagram of the human alimentary canal.
(i) Name the parts 1-11 indicated by guidelines.
1.____ 2.____ 3.____ 4.____ 5.____ 6.____ 7.____ 8.____ 9.____ 10.___ 11.____
(ii) State the function of the juice secreted by the part 1.
(iii) State the function of the three enzymes found in the juice secreted by part 3.


Fill in the blanks.

Grinding of food is brought about by _______ and ______


Write true or false for the below statement. Rewrite the false statements correctly

Pancreatic juice does not contain any enzyme.


Write short answers

What is peristalsis?


Define with examples: Autotrophs


State whether the following statements are True or false: Enteropeptidase activates pepsinogen into pepsin.


The question has four options. Choose the correct answer:

The organ that stores bile is


Pushing forward the food that has been chewed is the function of the ______.


What makes respiration and blood circulation go on all the time, and the processes of digestion happen at the right time?


What is the significance of the emulsification of fats?


Given below from (i) to (iv) are some food items.

  1. Boiled and mashed potato
  2. Glucose solution
  3. A slice of bread
  4. Mustard oil

Which of the above will give a blue-black colour when tested with iodine?


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