Which is the common passageway for both food and air?

In which organ is water reabsorbed?

Tracheids are ______________ cells.

Sugars are produced by photosynthesis in sink cells and stored in source cells.

All organ systems in the body function together to maintain homeostatic conditions.

Which of the following choices lists the correct path of carbon dioxide moving out from the interior of the body?

Bark consists of ______________.

T-cells protect your body from pathogens by acting in cell mediated immunity which means it mounts its attack outside of the cell.

Which have longer alimentary canals?

Which of the following plant cells functions in large part to limit a plant’s loss of water vapor?