Solution:
Most nitrogen fixation occurs naturally, in the soil, by bacteria.

Solution:
In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll.

Solution:
Pancreas is a mixed gland having both endocrine and exocrine functions. Endocrine portion secretes hormones, insulin and glucagon while the exocrine portion secretes an alkaline pancreatic juice containing enzymes and bicarbonate.

Solution:
Stem Cell Therapy (SCT) is not useful for the treatment of Vision impairment.

Solution:
Sepals (collectively called the calyx) are modified leaves that encase the developing flower. They are sterile floral parts and may be either green or leaflike or composed of petal-like tissue.

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Solution:
Contains fluoride to harden the tooth enamel is not a function of saliva.