Ans 1) Plants-
It's cells are larger compared to animal cells.
Plants are held by roots which doesn't allow them to move.
Plants make their own food by the chemical reaction of Photosynthesis.
Plants take in Carbon Dioxide and release Oxygen.
Plant cells have Chloroplasts, Vacuole and Cell Wall which animal cells don't have.
Plants do not have the sensory system(and if they do..it's very basic) and nervous system.
It's cells are smaller compared to plant cells.
Many animals have the ability of moving freely.
Animals cannot make food on their own and are dependent on other plants and animals for food.
Animals take in Oxygen and release Carbon Dioxide.
Animal cells don't have Cell Wall, Chloroplasts and Vacuole which the plant cells contain.
Animals have a developed nervous and sensory system.
Ans 2) Light reactions need light to produce organic energy molecules.
Dark reactions make use of these organic energy molecules...basically they don't require light!
Ans 3) Ingestion is the taking in of food or any other kind of substances.
Digestion refers to the breakdown of food into smaller particles, capable of later absorption.