1. During _______, the pollen grains are transferred from the anthers of a flower to the stigma of the same flower.   cross-pollination   self-pollination   2. The hard wood in the center of a tree trunk is referred to as 'heartwood'.   True   False   3. Which of the following is dispersed by wind?   Calotropis   Love Grass   Orange   Squirting Cucumber   Spear Grass   Hint Half-n-half Clue   4. What is a seed called before it undergoes fertilization?   Ovary   Ovule   Embryo   Half-n-half Clue   5. Scientists conduct germination tests to study the average number of seeds in every hundred that are likely to germinate.   True   False   6. Which of the following is dispersed by wind?   Balsam   Oxalis   Clematis   Castor   Water Lily   Half-n-half Clue   7. Which of the following is not dispersed by wind?   Orchids   Cinchona   Oroxylon   Drumstick   Coconut   Half-n-half Clue