Question 36: 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 stomach that acts on proteins.
Answer:
a) Photosynthesis (Photosynthesis is the anabolic process by which green plants (autotrophs) synthesize their own food in the form of glucose or carbohydrates from the simple inorganic compounds like carbon dioxide and water by converting light energy into the chemical energy)
b) Autotrophs (Autotrophs are those organism which prepare their food, i.e, organic food from the inorganic matter by their own through various processes like photosynthesis)
c) Chloroplast (photosynthesis takes place in chloroplast which contains chlorophyll, when organisms take carbon dioxide and water from the environment, they use sunlight and convert them into the glucose or oxygen and this is taken up by the chlorophyll)
d) Guard cells (Guard cells regulate the stomatal apertures and influence the water status)
e) Heterotrophs (Heterotrophs are those organisms which take organic food from the autotrophs, i.e, they are dependent on other organism for the food consumption, hence they cannot prepare their own food)
f) Pepsin (it is secreted from the gastric glands in stomach that acts on proteins and is activated from the pepsinogen by HCL and gives proteoses and peptones as the products).
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