हिंदी

Write down the explanation. Explain why human dentition is considered as thecodont, diphydont and heterodont.

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प्रश्न

Write down the explanation.

Explain why human dentition is considered as thecodont, diphydont and heterodont.

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उत्तर

  1. Human dentition is described as thecodont, diphyodont and heterodont.
  2. It is called thecodont type because each tooth is fixed in a separate socket present in the jaw bones by gomphosis type of joint.
  3. It is called diphyodont type because we get only two sets of teeth, milk teeth and permanent teeth.
  4. It is called heterodont type because humans have four different type of teeth like incisors, canines, premolars and molars.
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अध्याय 14: Human Nutrition - Exercise [पृष्ठ १७२]

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बालभारती Biology [English] Standard 11 Maharashtra State Board
अध्याय 14 Human Nutrition
Exercise | Q 3. (B) | पृष्ठ १७२

संबंधित प्रश्न

Which of the organs perform the following function in humans?

Absorption of water


Iodine turns blue-black on reacting with ______.


What is trypsin?


The first enzyme to mix with food in the digestive tract is ______.


Name the substance whose build up in the muscles during vigorous physical exercise may cause cramps.


How is thorough chewing of food helpful in digestion?


What is roughage? Give two examples.


Define the following term:

Assimilation


Complete the following table by filling in the blanks 1 to 8.

Organ

Enzyme

Food acted upon

Find product

1

Pepsin

2

3

Mouth 4 5 Disaccharide

6

7

Maltose

8


What is the role of the liver and the pancreas respectively in the digestion of food?


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

The pancreas secretes bile juice


Write short answers

What do you mean by the emulsification of fat?


State one difference in nutrition: Holophylic and Holozoic


Name different steps involved in animal nutrition. Explain.


Correct the spellings: Ptorein


The question has four options. Choose the correct answer:

Uvula can close the opening of


What’s the solution?

A person has fainted, and a crowd of people has surrounded him.


Circle the odd one.


Describe the alimentary canal of man


______ is the common passage of air and food.


Match the two columns and select correct option.

  Column - I   Column - II
i. Sphincter of Oddi a. Oesophagus and stomach
ii.

Ileo-caecal 

sphincter

b. Stomach and small intestine
iii. Pyloric sphincter c Ileum and caecum
iv.

Gastro-oesophageal

sphincter 

d. Opening of hepato- pancreatic duct

A gland not associated with the alimentary canal is ____________.


What is digestion?


Mention the 3 important digestive glands in the process of digestion?


List the glands associated with digestion.


In which of the following vertebrate group/groups, the heart does not pump oxygenated blood to different parts of the body?


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?



Label the following parts in Figure and name them.

  1. The largest gland in our body.
  2. The organ where protein digestion starts.
  3. The organ that releases digestive juice into the small intestine.
  4. The organ where bile juice gets stored.

Give two reasons, why bile juice is considered to be an important secretion of liver in the process of digestion?


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