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?

Photosynthesis mostly takes place in which plant organ?

The heterokaryotic phase of a fungal life cycle is ______________.