Most Dinosaurs Died Out by the End of the ____

question 65

Multiple Choice

Most dinosaurs died out by the end of the ____ period.

• A) Triassic
• B) Jurassic
• C) Cretaceous
• D) Quaternary
• E) Permian

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Definitions:

Chondrocytes

Cells specialized in the production and upkeep of the cartilaginous matrix that reside within cartilage.

Monocytes

A type of white blood cell that plays an important role in the immune system by fighting off pathogens and removing dead cells.

Osteochondral Progenitor Cells

Stem cells found in bone and cartilage that have the potential to differentiate into osteoblasts or chondrocytes.

Osteochondral Progenitor Cell

These cells are stem cells found in bone and cartilage that have the potential to differentiate into osteoblasts and chondrocytes, which are responsible for forming bone and cartilage tissue, respectively.