1. What is a seed called before it undergoes fertilization?   Ovary   Embryo   Ovule   Hint Half-n-half Clue   2. The growth of a pollen tube enables pollination to take place.   True   False   3. The hard wood in the center of a tree trunk is referred to as 'heartwood'.   True   False   4. The fleshy base of a flower forming the top of the flower-stalk is called the _______.   receptacle   peduncle   pedicel   Half-n-half Clue   5. The conditions required for seeds to germinate are oxygen, water and warmth.   True   False   6. The male flower of the hazel plant is known as the _______.   corymb   catkin   capitulum   Half-n-half Clue   7. During _______, the pollen grains are transferred from the anthers of a flower to the stigma of the same flower.   self-pollination   cross-pollination