Most Biologists Now Agree That the Common Ancestor of All

question 56

True/False

Most biologists now agree that the common ancestor of all animals was probably a eumetazoan.

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Definitions:

Nystagmus

An involuntary, rapid movement of the eyeballs, which can be horizontal, vertical, or rotary.

Otitis Media

An infection or inflammation of the middle ear.

Otoliths

Otoliths are small calcium carbonate crystals located in the inner ear that play a critical role in sensing gravity and linear acceleration, aiding in balance and spatial orientation.

Hair Cells

Sensory cells located in the inner ear, crucial for converting sound vibrations into neural signals for hearing and helping with balance.