18. Some plants form flowers that produce stamens but no carpels. Could fruit form on one of these flowers? Support your answer with an explanation.
A. No, the fruit is a swollen ovary which is the lower portion of the carpel. If no carpel is present then a fruit can not form.
19. The seeds of lupines, an arctic plant, can remain dormant for thousands of years. Explain why this trait is important to this plant in an arctic environment.
A. Dormancy allows for ideal conditions for the plant. In the arctic resources are often scarce. By this plant being able to be dormant for a long period allows them to wait until they have the right resources before germinating.
20. Which fruit was carried the farthest from the parent tree?
22. The fruit of the oak and hickory is very different from the fruit of the maples and ash. Other than dropping from the tree, what means of seed dispersal might the oak and hickory rely upon?
A. The oak may rely on animal dispersal to carry the seed away from the parent plant. Animals like squirrels and other rodents eat acorns.
23. What does a plant need that makes it necessary for seed germination to start with the emergence of a root rather than a shoot?
A. A germinating seed needs water, which is absorbed by the root in order to continue the process of germination and coming out of the seed. The plant will not need a shoot or leaves until it is above ground, because they are responsible for conducting photosynthesis. Before the plant is above ground it continues to use the endosperm for food.
24. Inside which structure is pollen produced? What is the name of this structure?
A. (C) , The Anther
25. What structure is represented by A? What is its function?