Biology

Dental and Oral Biology

924 Questions

Dental and Oral Biology focuses on the structure, development, and function of teeth and oral tissues. It covers key concepts like dental formulas, tooth eruption, and common oral diseases. These topics are essential for medical and biology entrance examinations.

Dental formulaTooth anatomyMilk teethOral diseasesTooth decay

Dental and Oral Biology Questions

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Type of teeth present in humans is

  1. Diphyodont and homodont

  2. Monophyodont and thecodont

  3. Monophyodont and homodont

  4. Diphyodont and heterodont
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Humans are diphyodont because they have two sets of teeth (milk and permanent) and heterodont because they have different types of teeth (incisors, canines, premolars, molars).

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Which are cutting teeth in humans?

  1. Canines

  2. Molars

  3. Premolars

  4. Incisors
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Incisors are the sharp, chisel-shaped front teeth primarily responsible for cutting and biting food. Canines are for tearing, while premolars and molars are for grinding.

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Diastema is associated with

  1. Organ of Corti

  2. Absence of certain teeth

  3. Retinal cells

  4. Presence of teeth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A diastema is a gap or space between two teeth. It is commonly observed in animals like herbivores where certain teeth are absent.

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Which teeth of human are shovel-shaped and used for nibbling, cutting and tearing

  1. Canines

  2. Premolars

  3. Molars

  4. Incisors
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Incisors are the front teeth shaped for cutting and nibbling. Canines are pointed for tearing, and molars are for grinding.

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Primary dentition in humans differs from permanent dentition in not having one of the following teeth

  1. Canines

  2. Pre-molars

  3. Molars

  4. Incisors
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Primary (deciduous) dentition lacks premolars. The permanent set includes premolars, which replace the primary molars.

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Eye teeth are

  1. Upper incisors

  2. Lower incisors

  3. Lower canines

  4. Upper canines
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Canines in the upper arch are also often called “eye teeth,” which, when you come to think of it, is kind of a weird name for them. But the most common explanation is actually pretty simple: these teeth lie directly below the eye sockets.


So, the correct option is 'Upper canines'.

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Choose the correct answers from the alternatives given.
In mammals, mastication of the food is done by

  1. molars

  2. premolars

  3. incisors

  4. canines
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. 
  • They are used primarily to grind food during chewing.
  • Molars show a great deal of diversity in size and shape across mammal groups. Hence, in mammals, mastication of the food is done by molars.
So, the correct answer is 'molars'.

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Wisdom tooth is the

  1. first molar tooth

  2. second molar tooth

  3. third molar tooth

  4. fourth molar tooth
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A wisdom tooth or third molar is one of the three molars per quadrant of the human dentition. It is the most posterior of the three. Wisdom teeth generally erupt between the ages of 17 and 25

So, the correct answer is 'third molar tooth'

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Upper molars in human dentition have

  1. Four roots

  2. Three roots

  3. Two roots

  4. Single root
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Humans have four types of teeth, namely incisors, canines, premolars and molars. Each type of teeth has specific structure and function. The roots of teeth are embedded in the upper jaw and the lower jaw. Humans have 32 teeth, 8 incisors, 4 canines, 8 premolars and 12 molars. Canines and premolars have one root. Upper first premolars and lower molars have two roots. Upper molars have three roots.

Thus, the correct answer is 'Three roots.'

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Incisor teeth in mammals are primarily for ________________.

  1. Weapons or for killing prey

  2. Grinding and chewing food

  3. Cutting and slicing food

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Incisors are the front four teeth which are used for cutting/biting and slicing the food, canines are the pointed teeth which helps in tearing the food whereas molars are the teeth which are used for Grinding and chewing of food particles. 

So, the correct option is 'Cutting and slicing food'

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

A diastema :

  1. Is a gap between two teeth

  2. Appears due to the absence of canine teeth in herbivores

  3. May occur in humans

  4. Is related to more than one option given above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A diastema is a gap between teeth mostly seen in the front teeth. It mainly occurs in mammals mostly in humans. It is caused by missing of teeth or undersized teeth.

So, the correct option is 'Is related to more than one option given above'

Multiple choice evs structure and functions of living organisms -ii experiments on digestive enzymes role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Carnassial teeth are modified for

  1. Crushing

  2. Tearing

  3. Grinding

  4. Cutting
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carnassial teeth are the molar and premolar teeth modified for shearing flesh by having cusps with sharp cutting edges. They are typical of animals of the order carnivora (e.g., tigers, wolves), in which they are the first molars in the lower jaw and the last premolars in the upper.