Prosimians have lower incisors called:Group of answer choicesbilophodont.two-ridge tooth.diastema.dental comb.

Breakdown the Problem

1. We need to identify the specific term that describes the lower incisors of prosimians from the provided options: bilophodont, two-ridge tooth, diastema, and dental comb.

Relevant Concepts

2. Understanding the Options:
   • Bilophodont: This refers to molar teeth that have two ridges and is commonly found in certain primates such as monkeys.
   • Two-ridge tooth: This is not a standard term in dental anatomy for prosimians.
   • Diastema: This refers to a gap or space between teeth, not specifically related to the structure of incisors.
   • Dental comb: This refers to the arrangement of lower incisors in certain primates, including prosimians, that are adapted for grooming and scraping.

Analysis and Detail

3. Among the choices:
   • Bilophodont pertains to molars, therefore not applicable here.
   • The term "two-ridge tooth" is irrelevant in this context.
   • Diastema denotes an absence of teeth between incisors rather than a characteristic of the incisors themselves.
   • Dental comb accurately describes the specialized structure of the lower incisors found in prosimians.

Verify and Summarize

4. Since prosimians possess lower incisors that form a specialized "dental comb" shape, this term is confirmed as the correct answer.

Final Answer

The lower incisors of prosimians are called: dental comb.