641. Masses of dilated tortuous veins in the anorectal mucosa are known as___________?
A. Bulimia
B. Ulcer
C. Adipose tissue
D. Hemorrhoids

642. Puccinia is a parasitic___________?
A. Plant
B. Fungus
C. Animal
D. Algae

643. An illness which largely affects girls usually just after the onset of puberty.
A. Bulimia nervosa
B. Obesity
C. Anorexia nervosa
D. None of these

644. Autotrophic organisms can exist in an exclusively ________________ environment?
A. Organic
B. Inorganic
C. Wet
D. Terrestrial

645. Loss of appetite due to the fear of becoming obese is____________?
A. Anorexia nervosa
B. Bulimia nervosa
C. Piles
D. Dyspepsia

646. Strong chlorosis is due to the deficiency of _____________ in plants?
A. Magnesium
B. Nitrogen
C. Potassium
D. Phosphorus

647. Stunted growth of roots is due to the deficiency of____________in plants?
A. Potassium
B. Magnesium
C. Phosphorus
D. Iron.

648. The liquid that escapes during defrosting frozen meat contains _____ bacteria?
A. Campylobacter
B. Nitrobacter
C. Azobacter
D. Salmonella

649. One of the commonest cause of food poisoning are the toxins produced by__________?
A. Azobacter
B. Nitrosomonas
C. Campylobacter
D. Nitrobacter

650. Puccinia commonly destroys______________?
A. Corn
B. Tomato
C. Dodder
D. Wheat