Name the following:
$(a)$ The process in plants that links light energy with chemical energy
$(b)$ Organisms that can prepare their own food
$(c)$ The cell organelle where photosynthesis occurs
$(d)$ Cells that surround a stomatal pore
$(e)$ Organisms that cannot prepare their own food
$(f)$ An enzyme secreted from gastric glands in the stomach that acts on proteins

(N/A) Photosynthesis: The process by which green plants convert light energy into chemical energy stored in glucose.
$(b)$ Autotrophs: Organisms like plants that synthesize their own food using inorganic substances.
$(c)$ Chloroplast: The specialized cell organelle containing chlorophyll where photosynthesis takes place.
$(d)$ Guard Cells: Specialized cells that regulate the opening and closing of the stomatal pore.
$(e)$ Heterotrophs: Organisms that depend on other organisms for their food requirements.
$(f)$ Pepsin: $A$ digestive enzyme secreted by the gastric glands in the stomach that breaks down proteins into peptides.