13.
The deficiency of iodine causes
Answer : D. Goitre
14.
Suppose in a balanced green forest the number of tigers was doubled. This would gradually
Answer : C. decrease the biomass of herbivores
15.
Water soluble Vitamins are
Answer : C. Vitamin B complex
16.
machine polished rice is responsible for
Answer : B. Beriberi
17.
A deficiency in the secretion of thyroid gland leads to
Answer : C. delayed development of secondary sex characteristics
18.
Deficiency of iron causes
Answer : B. Anaemia