The organs constantly in touch with the liver are

The plant cell mostly stores food as

All the following organelles have membranes except

Which of these has the most complex level of organization?

The presence of a large member of mitochondria in a cell indicates that

Amoeba obtains its oxygen requirements

The unit contained in a cell structure responsible for changes in form and shape of organisms is called

Which of the following best describes a colony of volvox?

The hydra has two body layers of cells called