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Read the following statements and select the correct option
Statement 1 : Dental formula gives the number of teeth in the half of each jaw
Statement 2 : Dental formula can be expressed for insectivorous mammals as well as for the non- mammalian vertebrates
Statement 1 : Dental formula gives the number of teeth in the half of each jaw
Statement 2 : Dental formula can be expressed for insectivorous mammals as well as for the non- mammalian vertebrates
- a)Both statements 1 and 2 are correct
- b)Statement 1 is correct but statement 2 is incorrect
- c)Statement 1 is incorrect but statement 2 is correct
- d)Both statements 1 and 2 are incorrect
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Read the following statements and select the correct optionStatement 1...
Statement 1: Dental formula gives the number of teeth in the half of each jaw.
Statement 2: Dental formula can be expressed for insectivorous mammals as well as for non-mammalian vertebrates.
Explanation:
Statement 1: Dental formula gives the number of teeth in the half of each jaw.
- The dental formula is a shorthand method used to represent the number and types of teeth in the mouth.
- It provides information about the arrangement and number of teeth in a specific species.
- The dental formula is usually expressed as a fraction, with the numerator representing the number of incisors, canines, premolars, and molars in the upper jaw (maxilla), and the denominator representing the same in the lower jaw (mandible).
- For example, the dental formula of humans is 2-1-2-3/2-1-2-3, meaning we have 2 incisors, 1 canine, 2 premolars, and 3 molars in each half of the upper jaw, and the same in each half of the lower jaw.
Therefore, Statement 1 is correct.
Statement 2: Dental formula can be expressed for insectivorous mammals as well as for non-mammalian vertebrates.
- The dental formula is a useful tool for comparing and classifying different species based on their teeth.
- While dental formulae are commonly used for mammals, including insectivorous mammals, it can also be expressed for non-mammalian vertebrates such as reptiles, birds, and fishes.
- In these cases, the dental formula may vary based on the specific characteristics of the species.
- For example, the dental formula of a reptile like a crocodile may be different from that of a mammal or an insectivorous mammal like a shrew.
Therefore, Statement 2 is incorrect.
In conclusion, both Statement 1 is correct but Statement 2 is incorrect.
Statement 2: Dental formula can be expressed for insectivorous mammals as well as for non-mammalian vertebrates.
Explanation:
Statement 1: Dental formula gives the number of teeth in the half of each jaw.
- The dental formula is a shorthand method used to represent the number and types of teeth in the mouth.
- It provides information about the arrangement and number of teeth in a specific species.
- The dental formula is usually expressed as a fraction, with the numerator representing the number of incisors, canines, premolars, and molars in the upper jaw (maxilla), and the denominator representing the same in the lower jaw (mandible).
- For example, the dental formula of humans is 2-1-2-3/2-1-2-3, meaning we have 2 incisors, 1 canine, 2 premolars, and 3 molars in each half of the upper jaw, and the same in each half of the lower jaw.
Therefore, Statement 1 is correct.
Statement 2: Dental formula can be expressed for insectivorous mammals as well as for non-mammalian vertebrates.
- The dental formula is a useful tool for comparing and classifying different species based on their teeth.
- While dental formulae are commonly used for mammals, including insectivorous mammals, it can also be expressed for non-mammalian vertebrates such as reptiles, birds, and fishes.
- In these cases, the dental formula may vary based on the specific characteristics of the species.
- For example, the dental formula of a reptile like a crocodile may be different from that of a mammal or an insectivorous mammal like a shrew.
Therefore, Statement 2 is incorrect.
In conclusion, both Statement 1 is correct but Statement 2 is incorrect.
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Community Answer
Read the following statements and select the correct optionStatement 1...
Dental formula is a representation of the dentition of an animal. A dental formula consists of eight numbers, four above and four below a horizontal line. The numbers represent (from left to right) the number of incisors, canines, premolars and molars in either half of the upper and lower jaws e.g., the dental formula of man is 2123/2123
Dental formula is used to represent heterodont teeth which are present in mammals only. It cannot be used to represent dentition of vertebrates other than mammals as they have homodont teeth.
Dental formula is used to represent heterodont teeth which are present in mammals only. It cannot be used to represent dentition of vertebrates other than mammals as they have homodont teeth.
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Read the following statements and select the correct optionStatement 1 :Dental formula gives the number of teeth in the half of each jawStatement 2 :Dental formula can be expressed for insectivorous mammals as well as for the non- mammalian vertebratesa)Both statements1and2are correctb)Statement1is correct but statement2is incorrectc)Statement1is incorrect but statement2is correctd)Both statements 1and2are incorrectCorrect answer is option 'B'. Can you explain this answer?
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