1. Which of the following are known as "aves"?   Birds   Fish   Mammals   Reptiles   Hint Half-n-half Clue   2. How is the age of a tree determined?   By measuring its girth   By measuring its height   By counting the annual rings in a cut trunk   By counting the number of its branches   Half-n-half Clue   3. Which of the following is a parasite?   Pigs   Zebra   Wolves   Ringworm   Half-n-half Clue   4. Farmers can keep their soil fertile by   Irrigation   Regular Tilling   Repeatedly growing the same crop   Crop Rotation   Half-n-half Clue   5. The response of plants to light is known as   Phototropism   Chemotropism   Thigmotropism   Hydrotropism   Half-n-half Clue   6. Which of the following are known as "pisces"?   Reptiles   Mammals   Birds   Fish   Half-n-half Clue   7. What forms after the flowers have pollinated?   Fruits   Thorns   New Branches   Leaves   Half-n-half Clue