buccal plate वाक्य

उदाहरण वाक्य

1. They are distinguished by the presence of a rigid test, with ten buccal plates around the mouth, and solid spines.
2. They are distinguished from other sea urchins by the fact that their spines are hollow, or at best have an open mesh at the core, and by the presence of 10 buccal plates around the mouth.