This vitamin is not available in any kind of food material, only digestive tract fauna can synthesize it 

Correct Answer - Mucosa associated lumphoid tissue (MALT)

Correct Answer - `x+3y ge 9`, ` 3x+5y ge 15` and `x ge 0,y gt 0`

Citrus is the cheapest food material that is easily available in our areas, it reduces the deficiency of vitamin C.

(D) Epiglottis

1. Hepatic caeca  2. Malpighian tubules  For functions:  Hepatic caeca: These are thin, transparent, short, blind (closed) and hollow tubules.  Function: They secrete digestive enzymes.  For functions:  1. Malpighian tubules are the main excretory organs of...

D) ‘A’ is incorrect, ‘R’ is correct.

Correct option is A) Rancidity

(c) Vitamin C

(b) Vitamin B

(a) Vitamin D