crinoid

"The bird used its delicate feathers to steer through the air. "

"Her most striking features were her bright blue eyes and high cheekbones. "

"He is a student of life."

"Quality of life is usually determined by health, education, and income."

"Many students learn about invertebrates, like insects and worms, in biology class because they are animals without a backbone. "

"The box containing my old toys was stored in the attic. "

"He examined the crime scene for clues."

"Her voice was distinct despite the heavy traffic."

"The student had numerous assignments to complete before the weekend. "

"My son is taking biology classes at school, learning about different types of plants and animals. "

"Please relate the circumstances of your journey here today."

"A cat is an animal, not a plant. Humans are also animals, under the scientific definition, as we are not plants."