Q1. By which the sex of a child is determined before birth?
(a) Sperms of father
(b) Foetus of mother
(c) Both (a) and (b)
(d) Nutrition of mother
Q2. What may be the cause of malfunctioning of thyroid gland?
(a) Iodine deficiency
(b) Iron deficiency
(c) Calcium deficiency
(d) Vitamin C
Q3. The element which is the most abundant in the human body is–
Q4. Night blindness results from the deficiency of–
Q5. How many feet has a crab got?
Q6. Which one of the following is found only in women?
Q7. Which one of the following is NOT a function of kidney?
(a) Regulation of blood pH
(b) Removal of metabolic wastes from the body
(c) Production of antibodies
(d) Regulation of osmotic pressures of the blood
Q8. Water in plants is trans-ported by
Q9. Where are the Eucalyptus trees found in abundance?
(a) Mizo Hills
(b) Naga Hills
(c) Manipur Hills
(d) Nilgiri Hills
Q10. Which of the following hormone is released in excess quantity during excitement?