The given blank can be filled with occipital lobe.
Explanation:
At the posterior part of the brain occipital lobe is situated that plays an important role in the interpretation of the visual stimuli and info. The primary visual cortex is situated in the occipital lobe that interprets and attains data from the retinas of the eyes. Destruction to this lobe may result in visual issues like the incapability to determine colors, difficulty in identifying objects, and others.
The Archaea are characterized as single cells. They can exihibit both the autotrophic and heterotrophic mode of nutrition. Their cell walls do not contain peptidoglycans but contain pseudo-peptidoglycans etc. Their environmental conditions also need to be known to give a definitive identification and also are their organelles membrane bound.