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1. What new, important trait do all gymnosperms and angiosperms share, that is lacking in ferns and horsetails?2. Which group evolved first, Gymnosperms or Angiosperms? Which is most numerous (rich in species) now? 3. Which group (Gymno or Angio) was dominant in the Cenozoic era? The Mesozoic era? The Paleozoic era? (fig 29.1)4a. Which gymnosperm group is represented by the most living species? 4b. Which by only one?4c. Which is mainly tropical?4d. Which two groups develop their seeds in cones, which are often large?5. Are flowers associated with "naked seeds" or "enclosed seeds"?6. Gymnosperms lack flowers; then how do they get fertilized to make seeds?7. What is the micropyle?8. Which of the following plant clades makes the most use of animal (especially insect) pollinators for fertilization? How do the other clades accomplish fertilization?Gymnosperms, Mosses, Ferns, Angiosperms9. What happens during "double fertilization"? Which plant groups do it?10. How is triploid endosperm formed, and what is its function?11. What are the three stages of activity in the life of an angiosperm pollen grain which succeeds in fertilizing an ovule with its sperm? 12. What happens in the grain stage, the tube stage, and the sperm stage?
Claussen and colleagues proposed two hypotheses to describe this variation within a species. There are genetic differences between populations of plants found at different elevations.
Give an description for the differences in binding between CGP-12177 and dihydroalprenolol. What do you think may be the basis for isoproterenol-induced desensitization in these cells.
You have identified that flame wing (fw) is linked to blue eyes (be) and short legs (sl) on chromosome 2. You cross a fw, be, sl fly with flies containing various deletions within the 200 Kb.
An eight year old boy has an Individualized Education Plan due to learning problems. When he reads, he frequently misses letters and occasionally entire words.
Explain why are estuaries, like the Pamlico Estuary, so significant? Summarize the two different camps of the thought on life cycle of Pfiesteria.
You have been injected into the femoral vein? What is the path from the right femoral vein to the lower lobe of the right lung? What is the path that I would take from the right femorla vein to the lower lobe of the right lung via right pulmonary art..
Einstein once predicted that a sugar molecule glucose had a length of 1 nm. If glucose has a hexagonal structure, draw a picture of the 24 atoms in glucose.
Their water vascular system with tube feet is unique. Sea lilies (Crinoids) might be closest to the ancestral echinoderm. Other groups are modified from this. Chordates -An interesting sidelight: Which side is up.
Choose two organelles and compare them relative to structure and function. Describe what would be the specific probable effects on the cell if each of these organelles were lost.
Explain the etiology and genetics of disease phenylketonuria (PKU) Phenylketonuria (PKU) refers to a disease found within humans in which the affected individual does not have enzyme phenylalanine hydroxylase.
Explain the pathway of the conduction from the atria to the ventricles and correlate this conduction with the ECG waves.
Connell results led him to conclude that Chthamalus' realized niche is smaller than its fundamental niche because of interspecific competition with Balanus.
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