The plant is .... the chair.
on
You can see icons .... of the screen.
at the bottom
Where is the house?
at the top
Where is a white cat?
in
The sun is .... the clouds.
above
Where is the cat?
in
The cat is .... the plant.
by/next to
Where is a bike?
under
There is a pineapple .... two hamsters.
between
The fish is ... the boat.
below
One frog is .... the other.
opposite