The Word for the Opening in the Center of the Iris

question 53

Multiple Choice

The word for the opening in the center of the iris is:

• A)cornea.
• B)sclera.
• C)canthus.
• D)pupil.
• E)lens.

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Definitions:

Red Algae

A group of primarily aquatic, photosynthetic organisms, known for their reddish pigmentation and importance in marine ecosystems.

Billion Years

A unit of time used in geology, astronomy, and evolutionary biology, among other fields, to describe extremely long periods in Earth's history or the history of the universe.

India

A country in South Asia, known for its diverse cultures, languages, and histories, and as the seventh-largest country by land area.

Billion Years Ago

A timeframe referring to events that occurred approximately one billion years or more in the Earth's past.