Someone help me with 3 and 4

As , plants meet their needs for making food from air, soil, water, and the sun's energy in a process called there are plants called grow high in trees without here are words to put in the blanks. 1.) producers 2.) consumers 3.) chloroplasts 4.) epiphytes

Which of the following is an oxidation-reduction reaction? (pictured below)

Where can a dna be found in a prokaryotic cell