Confused and have questions? We’ve got answers.
With Chegg Study
, you can get step-by-step solutions to your questions from an expert in the field. If you rather get 1:1 study help, try 30 minutes of free online tutoring with Chegg Tutors
From Biology-Online Dictionary
a vessel, cell, duct, or tube containing or conducting air; as the air vessels of insects, birds, plants, etc.; the air vessel of a pump, engine, etc. For the latter, see air chamber. The air vessels of insects are called tracheae, of plants spiral vessels.