Bio 204 ch 30 homework questions - Google Docs PDF

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all of the questions and answers for mastering biology chapter 30...

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1. A plant is said to be cross-pollinated if a. Pollen grains are transferred to a flower on a different plant 2. What significant change occurred on earth between the Carboniferous period and the Permian period that most likely contributed to the success of the gymnosperms? a. The climate became drier and warmer 3. Which of the following is not an advantage seeds provide over spores? a. Asexual reproduction 4. A pea pod is formed from _____. A pea inside the pod is formed from _____ a. An ovary, an ovule 5. Of the following, which is a difference in how reproduction occurs in gymnosperm compared to angiosperms? a. Only the sperm of angiosperms combine with two central cell nuclei to form the triploid endosperm 6. At current rates of deforestation, tropical rain forests will be eliminated in a. 200 years 7. Which of the following is enclosed within the pollen wall of pollen grain? a. Male gametophyte 8. In which group is the sporophyte stage dominant in the alternation of generations? a. All vascular plants 9. Besides the plant tissue that humans ingest, which angiosperm tissue is most directly important for human survival? a. Xylem 10. Which of the following is not a gymnosperm? a. Coconut palm 11. In which phylum is the organism thought to be the world’s oldest living tree? a. Coniferophyta 12. Angiosperms are thought to have originated in which period? a. Cretaceous 13. Which of the following is a trait possessed by all angiosperms? a. Double fertilization 14. Which of the following is not a trait characteristic of monocots? a. Taproot 15. In gymnosperms, the seed coat develops from the integument. In angiosperms, the seed coat develops from the a. Integuments 16. In flowers, pollen is produced in the a. Anther 17. The diploid generation of the plant life cycle always a. Produces spores 18. The pollen of conifers is primarily dispersed by a. Wind 19. Which of the following is a conifer? a. All of the listed are conifers

20. Which example below is evidence provided by living gymnosperms of an evolutionary transition between seedless and seed plants? a. The sperm of some gymnosperms have flagella 21. The pore in the integuments of an angiosperm ovule through which sperm is delivered is the a. Micropyle 22. In addition to seeds, what is a trait unique to seed plants? a. Pollen 23. Which of the following best describes the function of fruits? a. Protection and dispersal of seeds 24. A bright pink flower with deep floral tubes will most likely be pollinated by which mechanism? a. Birds with long beaks 25. Dietary supplements and decongestants containing ephedrine have recently become more strongly regulated in the US. ephedrine is an extract of a plant belonging to which phylum? a. Phylum Gnetophyta 26. Which gymnosperm phylum below is characterized by large cones and fern-like leaves and thrived during Mesozoic? a. Cycadophyta 27. The seed coats most important function is to provide protection for the a. Sporophyte embryo...