1. Quinine is obtained from the bark of which tree?   Cinchona   Bunyan   Eucalyptus   Redwood   Hint Half-n-half Clue   2. Which of the following is a parasite?   Pigs   Wolves   Ringworm   Zebra   Half-n-half Clue   3. Which food stuff turns blue-black when brought in contact with iodine?   Starch   Proteins   Vitamins   Unsaturated Fatty Acids   Half-n-half Clue   4. Which of the following animals is not extinct?   Brontosorus   Dodo   Cheetah   Mammoth   Half-n-half Clue   5. The response of plants to light is known as   Thigmotropism   Phototropism   Hydrotropism   Chemotropism   Half-n-half Clue   6. Which of the following carries malaria?   Earthworms   Mosquitoes   Cockroaches   Bats   Half-n-half Clue   7. How is the age of a tree determined?   By counting the annual rings in a cut trunk   By measuring its girth   By counting the number of its branches   By measuring its height   Half-n-half Clue