Q. Medicine of quinine is produced by -
1) eucalyptus plant
2) aconite plant
3) cinchona plant
4) money plant
Q. Chief source of energy in environment is -
1) fire
2) moon
3) sun
4) stars
Q. When trees are cut amount of oxygen ?
1) decreases
2) increases
3) both and (A) and (B)
4) remains same
Q. Process through which plants reproduce -
1) eating
2) evaporation
3) pollination
4) condensation
Q. The highest protein content is found in the grain of -
1) black gram
2) pigeon pea
3) field pea
4) soya bean
Q. Ecology is the study of relationship between -
1) organism and environment
2) man and forest
3) soil and water
4) husband and wife
Q. Which one of the following groups of compounds is called 'accessory dietary factor'?
1) Fats
2) Hormones
3) Proteins
4) Vitamins
Q. An essential constituent of diet is -
1) starch
2) glucose
3) carbohydrate
4) cellulose
Q. Which one of the following proteins is present in human hair and nails?
1) Oxytocin
2) Keratin
3) Vasopressin
4) Trypsin
Q. Cow milk is yellowish white in colour due to the presence of -
1) casein
2) lactose
3) carotene together with casein
4) butyric acid together with lactose
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